DE3236664A1 - DISTRIBUTION CONSTANT TYPE FILTER - Google Patents

Description

The present invention relates to an electrical filter, and more particularly to a distribution constant type filter, which e.g. when used in an additional amplifier (booster) of a UHF television receiver in a Fre-5 frequency range of, for example, several 100 MHz works.

So far, for electrical filters that are used in a frequency range of several 100 MHz, besides those where LC resonance circuits and coaxial resonators can be used, for example a 10 filter of the distribution constant type is proposed, which consists of a body made of dielectric material, the at least two with a predetermined distance next to

BANK. DRESDNER BANK. HAMBURG. 4030448 (BLZ 20080000) POST CHECK: HAMBURG 147607-200 (BLZ 200100 20) ■ TELEGRAM: SPECHTZIES

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has through openings or bores lying one above the other, on the inner circumferential surfaces of these through openings electrically conductive layers or inner conductors are provided and another electrically conductive one Layer or outer conductor is arranged on at least four side surfaces of the dielectric body, to form resonance units together with the interposed dielectric material, while in the dielectric Body a cavity with, for example, circular Cross-section is formed at least between two adjacent resonance units, the resonance units and external circuits are electrostatically coupled to one another.

As shown in an electrical circuit according to FIG. 1, does the known ? filter described above in detail a circuit structure with input and output terminals Is and Os, which are each connected via electrostatic input and output coupling capacitors Ci and Co with circuits Ri and Ro for 1/4 wavelength resonance, which are represented by concentrated constant circuits, and forms an electrical filter in which the 2/4 resonance circuits Ri and Ro are inductively coupled to one another, while an external circuit and the 2/4 resonance circuits are also coupled to one another, namely electrostatically capacitively.

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In an example of the specific structure 2 and 3, the known filter of the distribution constant type is generally composed of a cuboid or cube-shaped, box-like body B, for example made of ceramic dielectric Material of the titanium oxide group, with through-openings or bores 01 and 02, which are spaced apart by a predetermined distance are formed next to one another in the dielectric body B, electrically conductive layers or inner Ladders E01 and E02, each on the inner circumferential surfaces of the through holes 01 and 02 are formed, and another electrically conductive Layer or an outer conductor Es, which on at least four side surfaces of the dielectric body B is provided. The filter also has another electrically conductive layer Eb, which is attached to the bottom surface of the Body B is provided to short-circuit one end of each inner conductor EO1 and E02 and the outer conductor Es, to create 1/4 wavelength resonance circuits, and an input coupling capacitor Ci connected to and through the other end of the inner conductor EO1 opposing electrodes Ed1 and Ed2 are formed on a cylindrical dielectric member d1. in the with the other end of the inner conductor EO1 is a fastening element n1 made of an electrically conductive one Part, such as a metal cylinder or

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electrically conductive paste electrically and mechanically connected, the opposite electrode Ed2 is electrically and mechanically connected to the fastening element n1 and attached to it. On the other end of the inner conductor EOl is also an output coupling capacitor Co connected and by opposed to each other on a cylindrical dielectric member d2 In particular, electrodes Ed3 and Ed4 formed are different at the other end of the inner conductor EO1 Fastening element n2 in the form of an electrically conductive element, for example a metal cylinder or an electrically conductive paste similar to the fastening element n1, electrically and mechanically fastened, wherein the opposite electrode Ed4 is electrically and mechanically connected to the fastening element n2 and is attached to this. Thus, the resonance frequency is determined by the electrical length of the inner conductor EO1 or E02 abbreviated by the dielectric constant of the dielectric element B determines »The electrical length can 1/4 or 1/2 of the wavelength, and at half the wavelength the conductive bottom layer Eb is not required » It should be noted that in the figures the electrode layers and electrodes, etc =, for better comparison. admission in exaggerated greater thickness than shown in the actual arrangement. With the ones described so far known arrangements are two resonance

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Units formed / and in the dielectric body B there is also a cavity V with a, for example, circular Cross-section formed, and the degree of inductive coupling between the two resonance units depends on the dimensions of this cavity V. The inner peripheral surface of the cavity V has no electrode layer Mistake.

In another known filter of the distribution constant type 4 are the input and output coupling capacitors described in the arrangement according to * Hg. 2 and 3 Ci and Co each replaced by an input terminal pin Pi and an output terminal pin Po, the fastening elements n1 and n2 being omitted. Specifically, the input terminal pin Pi is referenced onto the inner conductor EO1 at a position opposite the Cavity V and near the layer EO1 and the output terminal pin Po with respect to the inner conductor E02 respectively embedded in the body B at a position opposite the cavity V and near the layer E02 as shown. Accordingly is between the input terminal pin Pi and the inside Conductor EO1 and also one electrostatic each between output terminal pin Po and inner conductor E02 Capacity of a predetermined size formed.

Any of the known arrangements described above have problems in that of construction

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is relatively complicated, the functionality somewhat unstable the characteristics are not fully satisfactory, difficult for manufacture and adjustments Operations are necessary and therefore a satisfactory reduction in costs cannot be achieved, Etc.. '

Task of the present improved filter from Distribv

Invention is to be of a constant type with a

simple structure, stable functionality and high reliability with simple and cheap mass production to accomplish.

For this purpose, the procedure according to the invention is that columnar or cylindrical dielectric units each with lead wires extending axially through the units extend, are inserted into corresponding through openings in a dielectric body to between to create an electrostatic coupling to the conductor wires and inner conductors, which are arranged on the inner circumferential surfaces of the through openings, the inner conductors on the inner circumferential surfaces of the through-openings can be used, for example, as opposing electrodes, respectively lie on one side of an input coupling capacitor or an output coupling capacitor around the To simplify the construction of these coupling capacitors; and in which a composite filter by inclusion of several such filters from the Distributionskonatantcn-

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Type manufactured in a housing with an improved structure can be.

According to the invention is

a preferred embodiment of a distribution constant type filter characterized by a dielectric body made of a dielectric material which is provided with at least two through openings lying next to one another at a predetermined distance, on the inner circumferential surfaces of the through openings inner electrically conductive layers are formed on at least four side surfaces of the dielectric Body an outer electrically conductive layer is formed, and at least two dielectric Units each having a columnar part that is formed by applying a dielectric material to one part an electrically conductive wire is formed so that the electrically conductive wire axially through the unit; protrudes, which are each inserted into the through openings of the dielectric body to between the electr conductive wires of the dielectric units and the electrically conductive layers to generate an electrostatic coupling, thereby creating at least two adjacent resonance units.

The above-described arrangement according to the present invention is an improved, im

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Use effective distribution constant type filter created, which is advantageously formed by a simple construction o Äusführungsformen the The present invention will be described in detail with reference to the following figures. It shows :

Fig. 1 is an electric circuit showing the circuit construction of a conventional distribution constituent type filter (already described);

2 shows a longitudinal section through an example of a known filter of the distribution constant type (already described);

3 shows the top view of the filter according to FIG. 2%

Fig. 4 shows another example of a conventional distribution constant type filter in a similar one View like Fig. 2 (already described)?

5 is a perspective view of a filter from

Distribution constant type according to a preferred embodiment of the present invention;

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6 shows the filter according to FIG. 5 in longitudinal section;

7 is a side view on an enlarged scale

a dielectric unit used in the filter of Fig. 5;

Fig. 8 shows a first modification of the filter in a

View according to FIG. 6;

Fig. 9 (a) is a side view of a dielectric unit used in the filter of Fig. 8 on an enlarged scale;

FIG. 9 (b) shows the dielectric unit according to FIG. 9 (a) in FIG

Top view;

Fig. 10 (a) shows a modification of a dielectric unit in a view according to FIG. 9 (a);

FIG. 10 (b) shows the dielectric unit according to FIG. 10 (a) in FIG Top view;

11 shows a second modification according to the present one

Invention of a filter of the distribution constant type. - in plan view;

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Fig. 12 is a bottom view of a filter according to a third modification of the present invention;

13 shows a longitudinal section of a filter according to a fourth Modification of the present invention;

14 shows a longitudinal section through a filter according to a fifth modification of the present invention

15 shows a perspective view of a dielectric body in which the filter according to FIG. 14 is arranged is?

Fig. 16 is a graph showing the characteristics of the Filter according to FIG. 14;

17 shows a filter according to a sixth embodiment of the present invention in longitudinal section;

18 shows a filter according to a seventh embodiment of FIG present invention in longitudinal section;

19 shows the filter according to FIG. 18 in a top view;

20 shows a filter according to an eighth embodiment of the present invention in a plan view;

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21 shows a filter according to a ninth embodiment

^{w of} the present invention in a perspective view;

Fig. 22 is a graph showing the relationship between the area of the parts on which

the conductive layer is removed and the degree of coupling in the filter of FIG. 21;

23 shows a filter according to a tenth embodiment of the present invention in a plan view;

Fig. 24 is a side sectional view showing the mounting structure of a dielectric coaxial Resonator according to an eleventh embodiment of the present invention;

FIG. 25 shows a top view of a leaf spring as it is used in the arrangement according to FIG. 24; FIG.

26 is a side view of a housing which is shown in FIG

using the distribution constant type filter according to the present invention;

27 shows an exploded side view of the housing according to FIG. 26;

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28 shows a filter according to a twelfth embodiment

form of the present invention in a plan view;

29 shows a thirteenth embodiment (its inaccurate form of the present Invention in a view according to FIG. 28;

FIG. 30 shows a fourteenth embodiment of the present invention in a view similar to FIG. 28; FIG.

Fig. 31 shows a fifteenth embodiment of the present Invention in a view according to FIG. 28;

32 is an electrical block diagram for explanation

"" "^ -a structure of a composite filter - - measure of the present invention;

JFig. 33 is a circuit diagram according to FIG. 32 for explanation "Modification;

^ Fig. 34 is a graph to explain the

Characteristics of the filter shown in FIG. 32;

Fig. 35 is a graph showing the relationship between the dielectric coefficient of a dielectric Element and the characteristic impedance of the resonator; ;

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36 is a perspective view of an assembled filter according to a sixteenth embodiment of the present invention;

37 is a longitudinal section through a filter of the distribution constant type; which is used in the arrangement of FIG. 36; and

38 is a perspective view of a housing,

which is used in the arrangement according to FIG. 36.

It should be noted that the same parts are denoted by the same reference numerals in the figures.

In FIGS. 5 and 6, a filter FA of the distribution constant type is shown according to a preferred embodiment, which generally consists of a rectangular, cuboid dielectric body B, for example is made of a ceramic dielectric material of the titanium oxide group and the like dielectric body B side by side and at a predetermined distance from one another bores or through openings 01 and 02 are formed over the inner peripheral surfaces these through openings 01 and 02 inner electrically conductive layers or inner conductors EO1 and E02

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C 2 3 6 6 6 4

are each formed, on at least four side surfaces of the dielectric body B an outer electrically conductive layer or an outer conductor It is provided aiv the bottom surface of the body B another conductive Layer Eb is provided to short-circuit the inner conductors E01 and E02 and the outer conductor Es, and in a central part of the body B between the through holes 01 and 02 in the axial direction thereof a cavity V is formed. The construction described up to this point is essentially the same the conventional arrangement as described with reference to FIGS. 1 to 4, with the exception of the particular one Constructions and details in accordance with the present invention as described in detail below will.

In the filter FA according to the present invention and as shown in FIGS. 5 and 6, in each of the Through openings 01 and 02, as described above on their inner circumferential surfaces inner conductors E01 and E02 each have a dielectric unit 1A, as shown in Fig. 7, fitted under pressure.

Each of the dielectric units 1A is provided with a columnar or cylindrical part 1Ac provided, for example having a circular cross-section and by applying a dielectric material consisting of plastics or ceramics of the titanium oxide

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group and the like, formed on a part of a conductive wire 2 with a diameter of, for example, 0.5 mm / so that the conductive wire 2 extends axially through the unit and at its front end for ease of insertion this unit 1A in the through-openings 01 and 02 of the dielectric body B a tapered one Part 3, as well as a flange 4 at its rear end

has a circular cross-section, for example, around a circumferential edge to touch each opening 01 and 02 of the body B at which the outer conductor Es is not formed. As can be seen from FIG. 6, the dielectric units 1A with the tapered parts 3 are first inserted into the Openings 01 and 02 of the body B with the inner conductors E01 and E02 inserted until the flanges 4 of the dielectric are seen Units 1A touch the dielectric body B.

By the arrangement described above according to the present invention and as shown in FIGS. 5-7 is shown, the lead wires 2 of the dielectric units 1A and the inner conductors E01 and E02, the on the inner circumferential surfaces of the through openings 01 and 02 of the dielectric body B are formed over which parts of the dielectric material of the dielectric Units 1A are electrostatically coupled to one another and therefore, the input coupling capacitor Ci and the output coupling capacitor Co can be used in the previously known

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Arrangement according to FIGS. 1 - 4 has been used, can be omitted and accordingly difficult operations for assembling such capacitors Ci and Co, etc. to be eliminated.

It should be noted here that in the above-described embodiment, the concept of the present The invention is not limited to use with a distribution constant type filter alone, although the present invention has been described primarily in terms of such a filter, but generally and can be applied to other high frequency components.

It should also be noted here that the cross-sectional shape of the columnar part 1Ac and the shape of the flange, etc. are not limited to the circular shape, but may be modified into various shapes such as square, rectangle, triangle or other polygonal shapes as required , as described later.

As from the above description according to the first Embodiment of the present invention is apparent, the conventionally required input ™ and output

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Coupling capacitors etc./ which involve difficult work steps for fastening are omitted become, resulting in a marked simplification of the assembly work for high-frequency parts in which the present Invention is applied, leads and consequently leads to a reduction in costs, since the arrangement is made so that the columnar dielectric units 1A in the corresponding through holes 01 and 2 of the dielectric body B are fixed around which the dielectric units 1A extend axially the conductor wires 2 electrostatically with the electrically conductive layers EO1 and E02 on the inner peripheral surfaces of the through holes 01 and 02 of the dielectric body B to couple.

Referring to FIGS. 8-10 (b), FIG a filter of the distribution constant type FB according to a first modification of the present invention is shown. Since the filter FB according to the first modification generally except that the dielectric unit 1A of the first embodiment by a dielectric unit IB with a different cross-section has been replaced, has a similar construction and operation as the filter FA according to FIGS. 5 and 6, a detailed description of the filter construction for the sake of brevity omitted, the same parts being identified by the same symbols and reference numbers.

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In the first modification shown in FIG. 8, the dielectric unit 1A, which is provided with a circular Cross-section at its columnar part 1Ac has been described with reference to FIG. 7, through the dielectric Unit 1B replaced that at its columnar part 1Bc has a square cross-section, with the pointed part 3 at the front end as in Figs. 9 (a) and 9 (b) has been omitted. The dielectric units 1B are in the openings 01 and 02 in a similar manner of the body B, which is fixed with the inner conductors EO1 and E02, bis.die flanges 4 touch the dielectric body B.

In the above-described embodiment of the present invention according to FIGS. 8-9 (b), not only the difficult work steps become those for fixing the input and output capacitors Ci and Co, as in the conventional arrangement according to FIGS. 1-4 eliminated ", but even if the size of the dielectric unit IB larger than the diameter of the through holes 01 and 02 of the dielectric body B due to manufacturing errors or the like. is, the dielectric unit 1B can be easily inserted into these openings 01 and 02 by scraping off the edge parts of the square cross section, while in the case of a dielectric unit having a circular cross section, the entire peripheral surface would have to be scraped off or cut off, which is

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the benefits are reduced. From this point of view, the cross section of the dielectric unit is self-evident not limited to the square shape, but can be any polygonal shape as long as this has edges that can be removed.

In a case shown in Figs. 10 (a) and 10 (b), Another modified dielectric unit 1c is the columnar part 1Cc with a circular cross-section for example provided with four axially extending projections or ribs 1Cp, each for example have a semicircular cross-section and at a distance of 90 ° from one another on the outer circumferential surface of the columnar portion 1Cc are arranged as best shown in Fig. 10 (b), although the cross section of the Projections 1Cp is not limited to the semicircular shape as described above, but modified in numerous ways can be. By the shape described above, the distance between the metal wire 2 in the Middle and the circumferential part of the columnar part 1Cc compared with that in the arrangement according to FIG. 9 (b) advantageously enlarged and it can be a sufficient Strength can be obtained even if the columnar part 1Cc is made of ceramic dielectric material is made.

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It should be noted that in the dielectric units described so far, the shape of the flange 4 as a function can also be modified to various shapes as required, and that the tapered one Part 3 at the front end of the dielectric unit as in the dielectric unit 1A according to FIG. may be provided or omitted as in the dielectric units 1B and 1C shown in FIGS. 9 (a) and 10 (a) can be.

It should also be noted that the concept of the present invention does not apply to a filter of the distribution constant type FB as shown in FIG. 8, is limited only, but generally to high-frequency components can be applied.

In a distribution constant type filter of FC according to another modification of the present invention and as shown in FIG. 11, the filter, for example the filter FB according to FIG. 8, is without the Cavity V, with two recesses U1 on opposite sides Provide side surfaces that are provided with the outer conductor Es. In the above case, the degree is the coupling between the resonance units compared with the case in which such recesses U are not provided

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are reduced. If a recess U2 is formed only on one of the mutually opposite side surfaces which is provided with the outer layer Es, as in a D
Filter FD according to a further modification in FIG. 12

is shown, on the contrary, the degree of coupling between the resonance units is compared with that Case in which such a recess U2 is not provided, increased. In the case that two recesses U1 as in the Arrangement according to Fig. 11 must be provided for the molds and dimensions in the recess U1 are not exactly the same be. It should be noted that the arrangements described above according to FIGS. 11 and 12 for coarse adjustment the degree of coupling are effective.

A recess U3 with a predetermined depth in the vertical direction can be used for fine adjustment of the degree of coupling be provided, for example on the bottom part of the filter of the distribution constant type fb according to FIG. 8, without that the cavity V is provided as in another modified filter FE according to FIG. It should be noted that such a recess U3 can be provided not only on the lower surface of the dielectric body B, but also an.der top or on the top and bottom can be provided, and that the recess U3 of course can be arranged independently or together with the recesses U1 and U2 according to FIGS.

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BATH ORIGINAL

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.35.

By the arrangement according to FIGS. 11-13 according to of the present invention, as also above described, the lead wires 2 of the dielectric units 1B and the inner conductors E01 and EQ2, which are on the inner Circumferential surfaces of the through openings 01 and 02 of the dielectric Body B are designed to be electrostatic are coupled to each other via the parts of the dielectric material of the dielectric units 1B, and therefore can the input coupling capacitor Ci and the output coupling capacitor Co, as described as being used in the conventional arrangement shown in FIGS. 1-4 are, can be omitted and difficult work steps that are required to mount these capacitors Ci and Co, etc., are required to be eliminated.

As can be seen from the above description, the filters are of the distribution constant type FC, FD or FE of the modifications described above from the body of dielectric material with at least two through openings or bores, which are adjacent to each other at a predetermined distance, wherein on the Inner surfaces of these through openings are provided with electrically conductive layers or inner conductors the outer conductor is formed at least four side surfaces of the dielectric body and on the bottom surface of body B the short-circuiting conductor is provided,

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. 36 ·

around together with the intervening dielectric Material to form the resonance units, on the outer surface of the dielectric body at least between the adjacent two resonance units a recess or recesses are provided to the coupling degree between the resonance units. Accordingly, with the construction described above according to the present invention, the formation of the electrically conductive layers is effectively accomplished are produced while simultaneously producing filters with different bandpass characteristics can be, since the coupling degree adjustment range compared to the conventional arrangements by more than 10 times has been expanded.

It should be noted here that the number of stages of the resonance units is not as in the previous embodiments described, is limited to two levels, but can be increased as required, with the resonance units may be arranged in interdigital form, and the conductive layers may be after filling of the recesses are formed with a dielectric material, this dielectric material from that which constitutes the dielectric body to increase productivity.

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In a filter FF shown in FIG. 14 according to a further modification, for example of the filter FB according to FIG for example has a rectangular cross-section (Fig. 15). Assuming that the width "a" of the rectangular cavity V is set to 2 mm, the state in which the ratio of the depth of the recess U4 to the height of the dielectric body B is varied becomes a graph of the embodiment according to the present invention Invention shown in FIG. As can be seen from the graph of FIG. 16, as the depth jfa t of the recess U4 increases, the coupling coefficient is decreased without increasing the insertion loss. The tendency described above also occurs with filters having a different width "a" or different dimensions.

FIG. 17 shows another modification, for example of the filter FB according to FIG. 8. The modified one Filter FG according to FIG. 17, the cavity V in the filter FB according to FIG. 8 is replaced by a cavity V2, which does not extend through the dielectric body B and which with a filling element B2 made of a dielectric

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BATH ORIGINAL

. 38 ·.

tric material is filled, which differs from the dielectric material of the body B, the degree of coupling to a desired value depending on the dielectric constant of the filling element B2 set together with the dimensions and configurations of the cavity V2. The dielectric

Body B and the filler element B2 can be sintered in one piece or sintered separately and for the purpose of use be composed. It should be noted that the cavity V2, like the cavity V in the filter FB according to FIG. may extend through the body B, and that the filling element B2 does not necessarily have the cavity V or V2. must be completed in full.

As is apparent from the above description, the modified filter FD shown in FIG. 17 also has the body made of dielectric material with at least two through-openings or bores, which are next to each other with a predetermined distance are formed in the body, on the inner circumferential surfaces of these through openings the inner conductors are provided, the outer conductor on at least four side surfaces of the dielectric body is formed and has the short-circuiting bottom layer to the resonance units together with the intermediate to form dielectric material, wherein in the dielectric body between at least two adjacent

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BATH ORIGINAL

Resonance units the cavity is provided in which the filling element is made of a dielectric material which is different from the dielectric material of the Body B is different in order to adjust the degree of coupling between the two resonance units. According to the above described construction according to the present invention can be the formation of the electrically conductive Layers can also be carried out in an effective manner while using different filters at the same time Bandpass characteristics can be effectively produced by the same molten metal because of the coupling degree adjustment range Compared to conventional arrangements is expanded by more than 10 times.

Here, it is noted that in the above-described modification is also the number of stages is not limited to the resonance units on two stages, but may be as required increases, the resonance units may be arranged in an interdigital form _t or "engage like a comb.

In a further modification, as shown in Figs. 18 and 19, the filter FH is provided with a cavity V3 with, for example, a rectangular cross-section _f with a bottom or extending through the dielectric body B, and a pin or rod B3. Of one dielectric material the same or different

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BAD ORIGINAL

. to).

to the dielectric material of the body B is partially / as shown / inserted into the cavity V3. In the how Filter FH described above can adjust the coupling degree to a desired value depending on the dielectric constant and the depth of insertion of the dielectric post B3 along with the dimensions and shapes of the cavity V3 can be set. After setting the degree of coupling, the pin B3 in the dielectric body B. attached by suitable elements. The part of the dielectric pin B3 that protrudes from the dielectric body B ' can be left as is or removed to align with the surface of body B. When the insertion depth of pin B3 is increased, the bandpass width can be in a range of approximately 0.1 to 2.2% of the mean frequency can be varied. In tests, a trend was found in which the mean frequency was reduced when the pin B3 is inserted, with a part in a range higher than the mean frequency of a selection curve is moved quickly to the lower range while a part is in a lower range than the middle frequency of the selection curve is slowly shifted to the higher range. In other words, the higher the degree of insertion of the pin is B3, the narrower the band-pass filters are obtained.

The modified filter FH described so far in accordance with of Figures 18 and 19 has the body of dielectric

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Material with at least two through openings or bores that are spaced apart from one another at a predetermined distance lie next to each other, the inner conductors are formed on the inner surfaces of these through openings, The outer conductor and the bottom short-circuit electrode are on at least four side surfaces of the dielectric body arranged to form the resonance units together with the intervening dielectric material, while in the dielectric body between at least two adjacent resonance units the cavity with for example rectangular shape is provided, with the pin made of dielectric material in this cavity is used to adjust the degree of coupling between the two resonance units. Therefore, in the above described construction according to the present invention the formation of the electrically conductive Layers can also be effectively implemented while using filters with different bandpass characteristics can be effectively produced by the same molten metal, since the coupling degree adjustment range compared to conventional Arrangements is expanded by more than 10 times. In the modification described above the number of stages of the resonance units is not two stages as in the above embodiments limited but can be increased if desired, with the resonance units in an interdigital form can be arranged «

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The arrangement according to FIGS. 18 and 19 can be modified further, as in the case of the filter FI according to FIG be, in which the cavity V3 described with a rectangular cross-section through a cavity V4 with a circular cross-section is replaced in which a tfunder columnar pin B4 made of a dielectric Material which is the same or different from that of the dielectric body B is used. The degree of coupling can also be used in this modification to a desired value depending on the dielectric coefficient and the depth of insertion of the dielectric post B4 along with the dimensions of the V4 cavity can be set. Since the other design features and modes of operation of the filter FI 20 are generally the same as those of the filter FH of FIGS. 18 and 19, for the sake of brevity a detailed description is dispensed with.

In Fig. 21, one filter FJ is according to another Modification, for example, of a filter FB according to FIG 8, which is particularly designed to effectively adjust its bandpass width can be.

More specifically, in the modified filter FJ shown in FIG. 21, the lower conductive layer Eb is the

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the inner conductors E01 and E02, which on the inner circumferential surfaces of the through openings 01 and 02 of the dielectric body B are formed with the conductive Layer It shorts on the side faces of the body B, in several places (in this modification at six places) removed, as in Fig. 21 in parts

Ebo is shown with the layer or holes removed "

When the removed layer Ebo of the short-circuiting conductive layer Eb is at a position La lies between the cavity V and the through-opening 01 or 02, the coupling degree K is lowered, since the surface S of the part with removed layer Ebo is enlarged, which leads to a narrowing of the bandpass width of the filter FJ, as shown in the graphic representation according to FIG. 22 by a line IA. If the part with distant Layer Ebo at a position Lb with reference to the through opening 01 or 02 at the one opposite the cavity V. Side, the degree of coupling is increased, since the area S of the part with the removed layer Ebo is increased is, which leads to a widening of the bandpass width of the filter FJ, as shown in FIG. 22 by the line IB is shown. When the part with the layer removed Ebo at a position Lc midway between the positions La and Lb, the coupling degree K remains unchanged even if the area S of the part with the layer removed is Ebo

- 30 ORIGINAL BATHROOM

ο Z J b b b

is enlarged, as shown in the graphic representation according to FIG. 22 by a line IC thus the bandpass width of the filter FJ according to FIG. 20 is not changed.

With the above arrangement, the bandpass width of each of the distribution constant type filters can be made as desired can be adjusted by the positions and areas S of the parts with removed layer Ebo in the short-circuiting conductive layer Eb can be changed.

As can be seen from the above description, in the arrangement according to the present invention, such as explained above and, for example, the filter FJ according to FIG. 21 precisely measures the bandpass width of the filter be adjusted, since the arrangement is such that the conductive layer for short-circuiting the inner conductor, which is attached to the inner circumferential surfaces of the Through bores are formed through the dielectric body, with the outer conductor on the outer surface of the dielectric body can be removed, and accordingly it was made possible to freely adjust the bandpass widths of the filters with the dielectric bodies, though these adjustments were impossible with the conventional types, and thus the design possibility of the Filter advantageously expanded, resulting in a reduction the failure rate of the products, whereby half

=, 31 -

BAD ORIiSiNAL.

finished products stored before measuring the bandpass width ^ ' in order to make them ready for dispatch after receipt of the order by adjusting the bandpass widths.

It is needless to say that the arrangement according to the present invention as described above based on 21 and 22 has been described, not on theirs Application to the filter FJ according to FIG. 21 is limited only, but easily to any other filters of the distribution constant type can be used with the same advantages.

FIG. 23 shows a further modification of the filter, for example of the filter FB according to FIG. 8 shown.

In the modified filter FK according to FIG. 23, the four edges of the dielectric body are B and As a result, the corresponding edge parts of the outer conductor Es are rounded off at Q.

With the above arrangement, the radius of curvature r of the rounded corners Q should preferably be in a ratio. r / t = O ₈ , 2: 0.5, where t is the thickness of the dielectric body B. If the ratio r / t is less than 0.2, none becomes noticeable

- 32 ORIGINAL BATHROOM

Effect determined; while when the relationship
r / t is greater than 0.5, turbulence occurs in the electromagnetic fields similar to the conventional arrangements.

In the arrangement according to the present invention as it has been described up to this point with reference to FIG
is, there will be no crumbling, flaking or the like on body B. form, since the dielectric body B advantageously has rounded edges Q. In addition, the electromagnetic fields in the dielectric body B are formed in such a way that they are related to
each of the dielectric units are approximately symmetrical with almost no turbulence, and hence the quality factor of the resonance units is improved by approximately 10% compared with conventional arrangements.

While the embodiment according to FIG. 23 relates to the case in which a resonator for 1/4 wavelength is used, the present invention can be carried out accordingly when a resonator for 1/2 wavelength is used.

Reference is now made to FIGS. 24 and 25, in which a fastening arrangement for the to

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the filter described here is shown. More specifically, in the case of the fastening arrangement shown in FIG the filter, for example the filter FB according to FIG. 8, received in a metal housing H, which is formed in one piece, or is formed from two halves to facilitate manufacture, with between the outer conductor Es of the filter FB and the ent ™ speaking inner walls of the housing H leaf springs w arranged are, furthermore, as shown, layers m of an adhesive are arranged therebetween.

More specifically, the housing H has a generally rectangular, parallelepiped or cube-shaped, box-like shape, which is fixed over the filter FB in the direction of the thickness of the dielectric body B, and with projections
Ha and Hb is provided ^> protrude downward on opposite edges of each side wall of the housing H, for example to attach to a printed circuit board (not shown) or the like. to be connected. Each leaf spring W is made by punching out of a resilient metal plate made of phosphor bronze or the like, for example in a square shape, which can be inserted into the housing H (FIG. 24), with a part near one edge being curved as shown, for example is to form a resilient part Ws, and is between the housing H and the body B of the filter FB, for example

- 34 -

BATH ORIGINAL

■ k-

arranged / wherein the back of the resilient part Ws the outer conductor Es of the body B under pressure contacted and the front edge of the resilient part Ws with the corresponding inner surface of the housing H is kept in pressure contact. Continue to be except at least the resilient parts Ws of the leaf springs W layers of adhesive such as epoxy resin, etc., formed between the housing H and the body B so that the outer conductor Es of the body B with the housing H Is electrically connected via the resilient parts Ws of the leaf springs W.

When the filter is in the housing H by means of the fastening arrangement in accordance with the present invention and as described so far is not a bad one Line between the outer conductor Es-of the body B and the Housing H possible because the outer conductor Es of the body B with the housing H via the leaf springs W without any need the use of an electrically conductive adhesive as in conventional techniques, electrically conductive tend is connected, and even if the housing H and the dielectric body B expand and contract As a result of temperature fluctuations, the outer conductor Es with the housing H is constantly electrically conductive Condition kept. Furthermore, in the embodiment described above, the leaf spring W should be preferable

- 35 -

236664

ft «1 & Λ

formed with a punched hole Wo (see Fig. 25) -um preferably a penetration of the adhesive m into the space between the housing H and the. Body B to allow.

It should be noted here that the resilient part Ws of the leaf spring W can be modified by instead of of the curved shape as in Fig. 24 by bending a Partly in the vicinity of one side edge of the leaf spring W is formed into a V-shaped cross section (not shown).

Since in this fastening arrangement of the outer conductor of the filter with the housing via the resilient parts of the Leaf springs is electrically connected, the filter can be securely and firmly attached to the housing without expensive conductive adhesives must be used which deteriorate over time and thus becomes advantageous a mounting structure for distribution constant type filters with stable characteristics and simple construction created"

26 and 27, a modification of the above-described housing H is described in which especially a positive and easy combination of two halves of the housing into a complete housing for one

- 36 -

BATH ORIGINAL '

O / .JUUUH

effective assembly during manufacture is intended.

The modified housing HB according to FIGS. 26 and 27 consists of two halves or counterparts HB1 and HB2, and one half HB1 is provided with protrusions HB1 protruding on one side edge while the other Half HB2 has grooves or recesses HBr which, on the side edges, correspond to the projections HB1 Positions are trained. There is a distance of 11 between them the projections HB1 is provided, which is slightly larger than the distance 12 between the grooves HBr, is when The engagement of the protrusions HBI with the grooves HBr between the protrusions HB1 and the grooves HBr due to the press contact Creates friction and therefore there is no possibility of that the two halves HB1 and HB2 are separated from each other even if no fastener is used to hold the two together.

Instead of only one half HB1 protrusions HB1 with the corresponding recesses HBr on the other half HB2 to provide the housing HB, the housing can be modified so that such projections HB1 on a Side edge and grooves HBr are provided on the other side edge of each of the two halves HB1 and HB2

- 37 -

BATH ORIGINAL

ν. ^ j b b D 4

may be, so that both halves have the same construction and thus advantageous for manufacture only one metal mold has to be used. It should be noted is that the projections HB1 and the grooves HBr are not limited to a particular shape if only capable are to generate frictional forces when engaging with one another. From the above description it can be seen that that in the modification according to FIGS. 26 and 27, the projections HB1 are provided on one half, wherein the corresponding grooves HBr are provided on the other half of the housing which is divided into at least two parts are to apply a contact pressing force between the projections in the direction of the flat surface of each projection and to produce grooves when they engage with each other, and thus can be effective and in the production Positive fitting of the filter can be achieved.

28 and 29 are further modifications for example the filter FB shown in FIG. 8, which relate to filters with three stages or more, and generate the effective dielectric constant of each resonator in accordance with each other should.

_ 38 -

oil Jbbb ^

In the modification according to FIG. 28, the filter FL has, in addition to the two resonators, which for example are provided in the filter FB according to FIG. 8 and denoted by the reference numerals R1 and R2 are, an additional resonator R3, with each degree of coupling between the resonators H1 and R2 and R2 and R3 adjusting cavities V1 and V2 are formed. If in the above arrangement, the cavity Vl something the resonator R1 and the cavity V2 is slightly shifted to the resonator R3, there are positions where the existing effective dielectric constant teff 1 CeffV becomes (£ eff1; »£ eff1 ·) and the existing effec-

. tive dielectric constant £ eff2 becomes lef f 2 '(£ eff2

that he
<teff2 '), so' the relation £ eff1 \ = £ eff2 "is obtained.

In FIG. 28, the adjusting cavities for the degree of coupling are shown in such shifted positions denoted by the reference numerals V1 * and V2 ', respectively.

In the modified filter FM having the four step resonators R1, R2, R3 and R4, when the existing coupling degree adjusting cavities V1 and V3 are shifted to the resonators R1 and R4, respectively, there are positions at which the existing dielectric constant. £ eff1 £ eff1 'becomes (leffi> leffi ¹ ) and the existing dielectric

that one becomes constant ieff2 £ eff2 '(£ eff2 C £ eff2 «), if the relation leff1' = £ eff2 · ■ is obtained. In Fig. 29 are

- 39 -

PAD ORIGINAL

2236664

the adjustment cavities for the coupling degree shown in such shifted positions and each by the Reference numerals V1 'and V3'.

As described above, the arrangements are in accordance with 28 and 29 are effective for filters with three or more stages.

It should be noted that in the above-described Arrangement the adjustment cavities to be moved for the coupling degree selected as required according to the requirements and that further the present invention not only in the case of the comb-like filter of the distribution constant type according to the above embodiments of FIGS. 28 and 29 but also with filters from the interdigital Type can be used.

As from the above description according to the present Invention can be seen, the filter of the distribution constant type with more than three cylindrical Through openings in the dielectric body at predetermined distances from one another, the inner conductors are formed on the inner circumferential surfaces of the respective through openings, the outer conductor on the Side surfaces of the dielectric body is arranged around the through openings, at the bottom of the short-circuit

- 40 -

JZJbbb ^ t

• 5k '

Head is provided and coupling degree adjustment cavities in the dielectric body at positions between the inner conductors are designed to produce the coupling of a plurality of coaxial resonators, the effective dielectric constants of the respective resonators designed so that they coincide with each other or with each other by changing the positions of the coupling degree adjustment cavities, and therefore it is possible to the effective dielectric constant of each resonator by a simple operation without the need the formation of, for example, concave or convex parts in the dielectric body or change of one To match part of the material of the same. In general, by changing the positions the coupling degree adjustment cavities determine the effective dielectric constants for the respective resonators to each desired, mutually different values will.

In FIGS. 30 and 31 further modifications of the arrangements according to FIGS. 28 and 29 are shown.

In the case of the modified filter FN with three stages, such as shown in Fig. 30, holes d1 and d2 are at opposite corner portions of the dielectric Body B is provided in the vicinity of the resonators R1 and R3.

- 41 -

BATH ORIGINAL

23

6664

. SS-

Through the positioning, dimensions and training etc.

of these "holes d1 and d2 become the effective dielectric constants fceffi of the resonators R1 and R3 at the third and fourth stages to £ eff 1 '(geff1 <£ eff1) changed to match the effective dielectric constant £ eff2 of the dielectric material for the resonator R2 in the second stage to be in agreement. Every of the bores d1 and d2 can be a through hole or a blind hole, or can continue through a recess like a groove or the like. be replaced"

In the modified four-stage filter FO shown in FIG. 31, holes d3 and d4 are similarly arranged on the opposite corner portions of the dielectric body B at positions near the resonators R1 and R4. By the positioning, dimensions and configurations, etc. of these bores d3 and d4, the effective dielectric constant are £ eff1 R1 and R4 changed the resonators to the first and fourth stages to £ eff1 '(£ eff1'<£ eff1) to effectively with the To bring the dielectric constant ε eff2 of the dielectric material of the resonators R2 and R3 at the second and third stages into agreement.

- 42 -

BATH ORIGINAL

ό Z ό bbb

. While the bores are arranged for the resonators in the first and second stages in the embodiments according to FIGS 30 and 31 in the dielectric material, it is also possible in which ^dielektri-: see Material 5 holes to attach to other resonators.

It should also be noted that the pre-I
/ the above-described arrangements according to FIGS. 30 and

in a similar way not only for filters from the distribution'-ΙΟ constant-type in comb form as described in the embodiments, but also for filters from the interdigital Type can be used.

As is apparent from the above description, the filter according to the embodiment of FIGS. 30 and 31 has more than three cylindrical through holes in the dielectric body with predetermined distances therebetween, wherein the inner conductors on the inner circumferential surfaces of the respective through openings are formed on the side surfaces of the dielectric body around these through openings around an outer conductor and at the bottom of the short-circuit conductor is arranged, and at positions between These conductors are arranged in the dielectric body adjusting cavities for the degree of coupling in order to facilitate the coupling of the Number of coaxial resonators, whereby the effec-

- 43 -

ORIGINAL

3? 3 G G 6 4

tive dielectric constant of the respective resonators can match or match each other by the holes or recesses for adjusting the effective dielectric constant of the adjusting cavities be arranged remotely for the coupling degree and

-t

therefore it is possible to determine the effective dielectric constant

i:

constants of each resonator · by a simple process without the

Need to shape concave

and convex parts on the dielectric body or by changing part of the material thereof, in accordance bring to. From a general point of view, the use of the bores or recesses enables the effective Dielectric constants set for the respective resonators to each desired, different values will.

32 and 33 show further modifications in which a plurality of filters, for example Filters Fb according to FIG. 8 are coupled or combined with one another to form a composite filter.

First of all, it should be noted that the filters of the distribution constant type, which are used in the arrangements according to FIGS. 32 and 33, in particular resonators require with a dielectric material whose dielectric constant is greater than 15 to the to shorten the electrical length of the resonator.

- 44 ORIGINAL BATHROOM

SS-

In the case of the composite filter Fp according to FIG. 2, the two-stage filters F1 and F2 each have two resonators with a dielectric material having a dielectric constant greater than 15 / and are connected in series with one another via a coaxial line CL, which is adjusted in length to produce the desired phase and size of the reflected waves, and their Characteristics are shown by a solid line in the graph of FIG. 34.

The band-pass filter characteristics shown in broken lines in FIG. 34 are the characteristics of one filter - the stage, and there are two filters with such characteristics as shown by the broken line are coupled to each other as shown in FIG their turbulence is compensated for in the characteristics, preferred characteristics being the same as those of a filter which is provisionally designed as a four-stage filter as obtained by the solid line in FIG. 34.

The above arrangement of FIG. 32 can be further modified as shown in the composite filter FQ of FIG. 33, wherein a line connecting the output side of the filter F1 to the input side of the filter F2 via a con capacitor C1 is grounded to remove unnecessary response. More precisely, if the

- 45 -

J.} . U

J L- OO

V>

■ 53-

Value of capacitor C1 phase and size at one The reflector point is changed to thereby achieve a precise match, and as a result, this can be undesirable Addressing will be eliminated. It should be noted that in each of the arrangements shown in FIGS a capacitor can be connected in series to line the output side of the filter F1 and the input side of the filter F2 as shown in dashed lines in FIGS. 32 and 33, connects.

Since in the composite filters FP and FQ of FIGS. 32 and 33, the resonators in their electrical Length shortened by using the dielectric material with the dielectric constant greater than 15 are, as shown in the graph of FIG. 35, the characteristic impedance of Resonators extremely decreased, and even if the constant of the components connected to the resonators are deflected to some extent, the turbulence becomes the impedance of the entire circuit not easily generated, and thus desired characteristics can be easily obtained.

As is apparent from the above description according to the arrangement of FIGS. 32 and 33, due to the Use of filters, each with multiple resonators

- 46 -

3736664

.fco.

have that in their electrical length by using of the dielectric material with the dielectric constant greater than 15 are shortened, the filters finished with precise filter characteristics, one being able to be coupled to the other without a buffer member must be interposed therebetween, and accordingly the following advantages can be obtained.

(i) By connecting several inexpensive filters that can be simply constructed, characteristics similar to those of a multi-stage filter can be obtained.

(ii) Since the construction is simpler than conventional filters, taking into account mutual Effects between multiple filters have been constructed, multi-stage filters can be used quickly and cheaply ■ be obtained.

(iii) In the event that filters are used in a data transmission facility or the like. are installed, according to the present invention, a combination of compact filters with two stages or the like., each recorded in individual housings are used, while in the conventional arrangements the filters are arranged together in one housing are, and therefore not only the design of the filter, but also the arrangement of the components in the device for

- 47 ORIGINAL BATHROOM

Installation can be facilitated.

(iv) For example, if in the conventional arrangement ₍ 100 four-stage filters are manufactured, see Sect

In accordance with the present invention, 200 two stage filters would be made and paired together; therefore effective mass production is enabled, which leads to a reduction in cost.

Referring to FIGS. 36-38, FIG. 36 shows a further modification of the composite filter according to FIGS. 32 and 33, in which two filters, for example filters FA _? as already mentioned above with reference to the Fig. 6 are received in a modified housing in the manner described below.

In the composite filter FR according to the figure, the filters FA1 and FA2 are accommodated in a housing HC and to the input and output sides of a high frequency amplifier On each connected as shown =

As the housing is HC in FIG. 38 can be seen by bending a metal plate of aluminum, duralumin, brass or copper, etc., is formed into a substantially S-shape, has on one side of a medial partition HCI

- 48 -

JZ ό bbb

63

a recess HC4 between this partition HC1 and a holding part HC2 for receiving the filter PAI , and another recess HC5 on the other side of the partition HC1 between this partition HC1 and a holding part HC3 for receiving the other filter FA2 -.

More precisely, the holding part HC2 is bent so that it forms an angle smaller than 90 ° with a holding part Occupies HC6, which is bent approximately at right angles to the partition wall HC1, around the filter FA1 in the recess HC4 between the holding part HC2 and the partition HC1 by inserting the filter FA1 to keep under tension to to be forcibly held by the spring force of the holding part HC2.

Depending on the requirement, the HC2 an opening HC20 can be provided to the external contact To electrically connect it of the filter FA1 to the holding part HC2 by pouring out the opening HC20 (not shown).

The retaining plate part HC3 is bent in a similar way, to form an angle smaller than 90 ° with a retaining part HC7, which is approximately at right angles to the partition HC1 is bent around the filter FA2 in the recess formed between the holding part HC2 and the partition HC1 HC5 by inserting the filter FA2 under pressure

- 49 BAD ORIGINAL

.63.

to hold to by the spring force of the holding part HC3 to be forcibly held.

Depending on the requirement, a different opening HC30 can be formed in the holding part HC3, around the outer one Conductor ES of the filter FA2 with the holding part HC3 by casting welding (not shown) through the opening HC30 electrically to conductively connect "

It should be noted that both filters FAI and FA2 are in the housing HC can be glued in place with a suitable adhesive.

As can be seen from FIG. 36, when the filters FA1 and FA2 are accommodated in the housing HC, the partition also serves as a shielding plate for shielding the filter FA1 from the filter FA2, but for a more inevitable shielding between these filters FA1 and FA2 an upper portion of the partition wall HC1a "provided HC1 to protrude at the upper part of the housing HC. Projections or noses J1 and J2 and J3 and J4 are provided on opposite side edges of each holding part HC2 and HC3 in order to be inserted into corresponding openings in a printed circuit board (not shown) for mechanical fastening. In the arrangement according to FIG

- 50 -

f. «W

• (, k

a length Ip between the lower edge of the partition HCl and the upper edge of the upper part HC1a so arranged that they are equal to a distance lh between the lower edges of the holding parts HC2 and HC3 and the upper edges of the Projections J1 and J2 and J3 and J 4 is.

It is needless to say that with the arrangement according to 36, the filters FA1 and FA2 described as housed in the case HC as an example, by others Filter types can be replaced. It should also be noted that, for example, the dielectric units 1A through other dielectric units or through the connections between the inner conductors EO1 and E02 and an outer circuit, through an ordinary capacitor, for example by columnar dielectric elements with electrodes on the opposite one another flat faces can be replaced, and that the number of stages of the filter set as required can be.

As can be seen from the above description, according to the arrangement of FIGS. 36-38, in each of the recesses in the S-shaped bent housing each under pressure filters of the distribution constant type as they are up to have been described here, and therefore multiple filters can be accommodated in one housing and because these filters through the partitions, which of a

- 51 -

323S664

. 4) 5.

Part of the housing are formed, are shielded from each other, a composite filter can be more compact Size that does not require separate shielding plates can be advantageously formed, which is also easy to use.

Although the present invention has been fully described with reference to the examples and the figures, It should be noted that numerous changes and modifications are within the scope of the present invention Invention are conceivable.

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BAD ORiGfNAL

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Claims (35)

Claims 1. / Filters of the distribution constant type characterized by a dielectric body (B) a dielectric material with a through opening through the dielectric body, an inner electrical one 5 conductive layer Eo, which is on an inner peripheral surface and the through opening is formed / an outer electrically conductive layer Es, which is formed on a peripheral side surface of the dielectric body (B), in order to thereby to form a resonance unit 10 2. Filters of the distribution constant type characterized by a dielectric body (B) a dielectric material with at least two through openings (01, 02), which are provided next to one another at a predetermined distance from one another in the body (B), inner elec- trically conductive layers (E01, E02), each on the inner circumferential surfaces of the passage openings are formed, an outer electrically conductive layer, (Es), which at least on four side surfaces of the dielectric body (B) is formed to thereby form at least two adjacent resonance units and at least two dielectric units (1A) each having a columnar portion (1Ac), the formed by applying a dielectric material to part of an electrically conductive wire (2) is, wherein the wire (2) protrudes axially through the unit, each in the through openings (01, 02) of the dielectric Body are used to between the electrically conductive wires (2) of the dielectric units (1A) and the inner conductive layers (E01, E02) to generate an electrostatic coupling. 3 - Filter according to claim 2, characterized in that a further electrically conductive Layer (Eb) on the dielectric body (B) is provided to protect the inner electrically conductive layers (EO1, E02) to be short-circuited with the outer electrically conductive layer (Es). :; ":: ο 6 6 U 4. Filter according to claim 2, characterized in that the dielectric body (B) between at least two adjacent resonance units is provided with a cavity means in order to reduce the degree of coupling to adjust between the two. 5. Filter according to claim 4, characterized in that the cavity device is a cavity (V), which extends in the axial direction of the through openings (01, 02) through the body (B). 6. Filter according to claim 5, characterized in that the cavity (V) is circular Has cross-section. 7. Filter according to claim 5, characterized in that the cavity (V) is rectangular Has cross-section. 8. Filter according to claim 5, characterized in that a pin (B3) in the cavity (V) of dielectric material is partially inserted to reduce the degree of coupling between at least the two adjacent Adjust resonance units. BAD ORIGfNAL 3/36664 9. Filter.nach claim 4, characterized in that the cavity device is a cavity (V2), which does not extend in the axial direction of the through openings through the dielectric body (B) extends. 10 filter according to claim 9, characterized in that the cavity (V2) is circular Has cross-section. 11. Filter according to claim 9, characterized in that g e k e η η - shows that the cavity (V2) has a rectangular cross-section. 12. Filter according to claim 9, characterized in that the cavity (V2) with a pin (B2) is filled from dielectric material in order to reduce the degree of coupling between at least the two adjacent Set the resonance units. 13. Filter according to claim 4, characterized in that the cavity device has a groove (U2) is in one of the opposite sides of the dielectric body (B). 14. Filter according to claim 4, characterized in that the cavity device consists of grooves (U1) BATH ORIGINAL 866 which are formed in the opposite side surfaces of the dielectric body (B). 15. Filter according to claim 4, characterized in that the cavity device has a groove (U3) formed at the bottom of the dielectric body (B) with a depth in the vertical direction. 16. Filter according to claim 4, characterized in that the cavity device has a groove (U4) is formed in the upper part of the dielectric body (B) with a depth in the vertical direction of the body is. 17. Filter according to claim 4, characterized in that the cavity device consists of recesses consists in both the upper and lower part of the dielectric body (B) with a depth in vertical direction of the body (B) are formed. 18. Filter according to claim 4, characterized in that the cavity device consists of one Cavity (V) extending in the axial direction of the through holes (01, 02) extends through the dielectric body (B) and there is a recess which is additionally connected to a location below the cavity is formed in the body (B). 3235664 19. Filter according to claim 2, characterized in that the dielectric body (B) has a cuboid or cube-shaped box-like shape, the vertical four edges (Q) of which with a predetermined radius of curvature (r) are rounded. 20 .. Filter according to claim 2, characterized in that the columnar part (1Ac) each dielectric unit (1A) has a circular cross-section. 21. Filter according to claim 2, characterized in that g e k e η η, that the columnar part (1Bc) of each dielectric unit (1B) has a square cross-section Has. 22. Filter according to claim 2, characterized in that the columnar part of each dielectric tric unit has a polygonal cross-section. 23. Filter according to claim 2, characterized in that the columnar part (1Cc) each dielectric unit (1C) has a circular cross-section, on the outer periphery of which four axially extending Projections (1Cp) protrude at a distance of 90 ° from one another, each with a semicircular cross-section. 24. Filter according to claim 3, characterized in that a further electrically conductive Layer (Eb) for short-circuiting the inner electrically conductive layers (E01, E02) with the outer electrically conductive layer (Es) with parts with removed layer (Ebo) is provided to reduce the degree of coupling between the Resonator units for adjusting the bandpass width of the To change filters. 25. Filter according to claim 4, characterized in that g e k e η η, that in the dielectric body (B) a further through opening and a further cavity device are provided, and a further dielectric unit is inserted into the further through opening, to form a three-stage distribution constant (FL) type filter, the first, second and third resonators (R1, R2, R3), the cavity device for adjusting the degree of coupling between these resonators each between the first and second resonator (R1, R2) and the second and third resonator (R2, R3) on such Positions is arranged that the effective dielectric constant of the respective resonators are brought into agreement with one another. 26. Filter according to claim 3, characterized in that in the dielectric body (B) /.u- Additional passageways and cavities - 7 -
BATH ORIGINAL ■? · are provided and in the additional through openings a plurality of additional dielectric units are used to create a multilevel filter of the distribution constant type (FM) with first, second ,, third and to form fourth resonators (R1, R2, R3, R4), wherein the cavity means for adjusting the degree of coupling between the resonators in each case between the first and second resonators (R1, R2) and between the third and fourth resonators (R3, R4) at such positions are arranged so that the effective dielectric constants of the respective resonators coincide with each other are brought. 27. Filter according to claim 4, characterized in that in the dielectric body (B) one a further through opening and a further cavity device are provided and a further dielectric unit is inserted into the further through opening, a three-stage filter of the distribution constant ^ type (FN), the cavity device for adjusting the degree of coupling between the resonators (R1, R2 and R3) respectively between the first and second resonator (R1, R2) and between the second and third resonator (R2, R3) is arranged and the dielectric body (B) is further provided with openings (d1, d2) to to adjust the effective dielectric constants so ■ y U 664 • 9. · the dielectric constants of the respective resonators are in agreement with each other. 28. Filter according to claim 4, characterized in that several in the dielectric body (B) additional through openings and cavity devices are formed and in the additional through openings several additional dielectric units are employed to form a multi-stage filter (FO) of the distribution constant type with at least first, second, third and fourth resonators (R1, R2, R3, R4) to create, wherein the cavity devices for adjusting the degree of coupling between these resonators in each case between the first and second resonator (R1, R2) and between the third and fourth resonator (R3, R4) are arranged and the dielectric body (B) continues to have openings (d3 " d4) is provided for adjusting the effective dielectric constant to the effective dielectric constant to bring the respective resonators into agreement with one another. 29. Filter according to claim 2, characterized in that further a fastening device (H) is provided, consisting of a housing (HB) in which the filter (FB) is received, with between the dielectric body (B) and the housing (HB) leaf springs ((W) are arranged to generate a spring force which BATH ORIGINAL • / O- from the inner wall surfaces of the housing to the side surfaces of the outer electrically conductive layer (Es) acts and between the housing (HB) and the outer electrically conductive layer (Es) with the exception of the last resilient part (Ws) of the leaf springs (W) an adhesive (m) is filled in to make the outer electrically conductive Layer (Es) to be electrically connected to the housing (HB) via the resilient parts (Ws) of the leaf springs (W). 30. Filter according to claim 2, characterized in that g e k e η η, that further a housing (HB) for receiving the filter (FP) is provided, which in at least first and second parts (HB1, HB2) is divided, the first part (HB1) several projections (HBl) and the second Part (HB2) has corresponding recesses (HBr) so that when interlocking between the projections and recesses a pressure contact force is generated in the direction of the flat plane of the projections. 31. Filter according to claim 2, characterized in that a housing (HB) for up- would take the filter (FB) is provided, which is divided into at least first and second parts (HB1, HB2), the first part (HB1) having a plurality of projections on one side and a plurality of recesses on its other side is provided, the second part (HB2) is also on - 10 - ζ _: ο ο bb k ■ Μ- one side with corresponding recesses and on the other side with corresponding projections is / so that when interlocking between the Projections and recesses in the direction of the flat plane a pressure contact force is generated by the projections. 32. Filter according to claim 2, characterized in that a second filter (F2) of the distribution constant type is provided with the same construction is, which on its input side with an output side of the first filter (F1) via a coaxial line (CL) is connected to form a composite filter (FP), each of the resonators of the first and second Filters (F1, F2) in its electrical length through the use of a dielectric material with a dielectric constant greater than 15 is shortened. 33. Filter according to claim 2, characterized in that a second filter (F2) of the distribution constant type with the same construction is provided that on its input side with an output side of the first filter (F1) is connected via a line which is grounded via a capacitor (CD to a to form composite filter (FQ), each of the resonators of the first and second filter (F1, F2) in its electrical length through the use of a dielectric - 11 - ORIGINAL BATHROOM 3 ;: 3 6 6 s 4 Material with a dielectric constant greater than 15 is shortened. 34. Filter according to claim 2, characterized in that a second filter (FA2) of the distribution constant type is provided with the same construction that on its input side with the output side of the first filter (FA1) is connected via a high frequency amplifier to a composite filter (FR) to form, wherein the first and second filters (FA1, FA2) are received in a housing (HC), which through Bending a metal plate into an S-shape is formed, with a recess (HC4) for receiving the first filter (FA1) on one side of a central partition wall (HC1 between the partition wall (HC1) and a first holding plate (HC2) is formed, which is connected in one piece to the central partition (HC1) via a holding part (HC6), and with a second recess (HC5) for receiving the second filter (FA2), which is on the other side of the central one Partition wall (HC1) is formed between the partition wall (HC1) and a second holding plate (HC3), which has a Holding part (HC7) is integrally connected to the central partition (HC1), the first holding plate (HC2) so is bent so that it with the first holding part (HC6), which is approximately at right angles to the central partition, encloses an angle less than 90 ° to the first - 12 - Insert the filter (PAD into the recess (HC4) under pressure and forcibly by the spring force of the first Holding plate (HC2), and the second holding plate (HC3) is bent so that it is with the second holding part (HC7), which is approximately at right angles to the central partition (HC1), an angle smaller than 90 °: closes to the second filter (FA2) in the second recess (HC5) can be used under pressure and forced by the spring force of the second retaining plate (HC3) to keep. 35. Filter according to claim 34, characterized in that each of the holding plates (HC2, HC3) des Housing (HC) with an opening (HC20 and HC30) for casting solder is provided to the first and second holding plate (HC2, HC3) each with the outer electrically conductive Solder layer (Es) of the first and second filters (FA1, FA2). - 13 -