CN102760950A - Portable satellite antenna and satellite antenna receiving system - Google Patents
Portable satellite antenna and satellite antenna receiving system Download PDFInfo
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- CN102760950A CN102760950A CN2012102262086A CN201210226208A CN102760950A CN 102760950 A CN102760950 A CN 102760950A CN 2012102262086 A CN2012102262086 A CN 2012102262086A CN 201210226208 A CN201210226208 A CN 201210226208A CN 102760950 A CN102760950 A CN 102760950A
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Abstract
The invention provides a portable satellite antenna which comprises a feed source, a feed source support rod, a reflecting board, a frame and a reflecting board elevation angle adjusting device, wherein one end of the feed source support rod is fixedly connected with the feed source, the other end of the feed source support rod is fixed on the frame, the reflecting board elevation angle adjusting device comprises a horizontal base, a connecting rod, a slide way and a locking device, the horizontal base further comprises a second hinge hinged with the feed source support rod, the upper end of the connecting rod can slide relative to the slide way under the status that the locking device is unlocked, the reflecting board is a metamaterial flat board, the metamaterial flat board comprises a core layer and a reflecting layer arranged on the surface at one side of the core layer, the core layer comprises a core layer sheet layer or a plurality of core layer sheet layers which are as the same as one another, and each core layer sheet layer comprises a sheet-shaped first base material and a plurality of first artificial micro-structures arranged on the first base material. According to the portable satellite antenna disclosed by the invention, the reflecting board is the metamaterial flat board which adopts a metamaterial technology, so that the elevation angle of the antenna can be very conveniently adjusted, and the portable satellite antenna is small and portable.
Description
Technical field
The present invention relates to the communications field, more particularly, relate to a kind of portable satellite antenna and satellite antenna receiving system.
Background technology
The satellite earth receiving station that traditional satellite antenna receiving system is made up of parabolic reflecting plate, feed, tuner, DVB.Parabolic reflecting plate is responsible for satellite-signal is reflexed to feed and the tuner that is positioned at along.Feed is loudspeaker that are used to collect satellite-signal in the along setting of parabolic reflecting plate, claims corrugated horn again.Its major function has two: the one, and the electromagnetic wave signal that antenna is received collects, and is transformed into signal voltage, the supply high frequency head.The 2nd, the electromagnetic wave that receives is carried out polarization conversion.Tuner LNB (also claiming frequency demultiplier) carries out frequency reducing and signal with the satellite-signal that feed is sent here to amplify and be sent to DVB then.Generally can be divided into C-band frequency LNB (3.7GHz-4.2GHz, 18-21V) and Ku audio range frequency LNB (10.7GHz-12.75GHz, 12-14V).The workflow of LNB is exactly to utilize local oscillation circuit that high-frequency signals is converted to intermediate frequency 950MHz-2050MHz again after earlier the satellite high-frequency signals being amplified to hundreds thousand of times, is beneficial to the transmission of coaxial cable and the mediation work of separating of DVB.DVB is that the satellite-signal that tuner transports is carried out demodulation, demodulates satellite television image or digital signal and audio signal.
During receiving satellite signal, parallel electromagnetic wave converges on the feed after reflecting through parabolic reflecting plate.Usually, the corresponding feed of parabolic reflecting plate is a horn antenna.
But because the Machining of Curved Surface difficulty of the reflecting surface of parabolic reflecting plate is big, required precision is also high, therefore, make trouble, and cost is higher.
Summary of the invention
Technical problem to be solved by this invention is to the big defective of existing satellite antenna manufacturing difficulty of processing, to provide a kind of easy processing and manufacturing and cost low portable satellite antenna.
The technical solution adopted for the present invention to solve the technical problems is: a kind of portable satellite antenna; The framework and the reflecting plate angle regulating device that comprise feed, feed pole, reflecting plate, fixation reflex plate; One end of said feed pole is fixedly connected with feed; The other end is fixed on the framework; Said reflecting plate angle regulating device comprise horizontal base, lower end through the hinged connecting rod of first hinge and horizontal base, be arranged on chute and the locking device of lock link position on the feed pole; Said horizontal base also comprises second hinge hinged with feed pole; The upper end of said connecting rod is in chute slip relatively under the unlocked state at locking device, and said reflecting plate is dull and stereotyped for ultra material, and said ultra material flat board comprises core layer and is arranged on the reflector of core layer one side surface; Said core layer comprises a core layer lamella or a plurality of identical core layer lamellas, and each core layer lamella comprises first base material of sheet and is arranged on a plurality of first artificial micro-structural on first base material.
Further, said connecting rod is set on the outer surface of feed pole, and said locking device comprises slide bolt and be connected the locking nut of slide bolt one end that said slide bolt runs through connecting rod and chute.
Further, the refraction index profile of said core layer lamella satisfies following formula:
Vseg=s+λ×NUMseg；
Wherein, radius is the refractive index value at r place on n (r) the expression core layer lamella, and the refraction index profile center of circle of core layer lamella is the projection of feed equivalent point on this plane, core layer lamella place;
S is the vertical range of feed equivalent point to ultra material plane reflecting plate;
n
MaxThe maximum of the refractive index of expression core layer lamella;
n
MinThe minimum value of the refractive index of expression core layer lamella;
λ representes that frequency is the electromagnetic wavelength of center of antenna frequency;
Floor representes to round downwards.
Further, the thickness of said core layer is Dh, 2Dh=D.
Further; Said first base material comprises first prebasal plate and first metacoxal plate of sheet, and the said a plurality of first artificial micro-structural is folded between first prebasal plate and first metacoxal plate, and the thickness of said core layer lamella is 0.21-2.5mm; Wherein, The thickness of first prebasal plate is 0.1-1mm, and the thickness of first metacoxal plate is 0.1-1mm, and the thickness of a plurality of first artificial micro-structurals is 0.01-0.5mm.
Further; Said ultra material plane reflecting plate also comprises the impedance matching layer that is arranged on core layer opposite side surface; Said impedance matching layer comprises an impedance matching layer lamella or the identical impedance matching layer lamella of a plurality of thickness; Said impedance matching layer lamella comprises second base material of sheet and is arranged on a plurality of second artificial micro-structural on second base material that the refraction index profile of said one or more impedance matching layer lamellas satisfies following formula:
Wherein, n
i(r) radius is the refractive index value at r place on the expression impedance matching layer lamella, and the refraction index profile center of circle of impedance matching layer lamella is the projection of feed equivalent point on plane, corresponding impedance matching layer lamella outer surface place;
Wherein, i representes the numbering of impedance matching layer lamella, and near the m that is numbered of the impedance matching layer lamella of feed, to the core layer direction, numbering reduces successively by feed, is numbered 1 near the impedance matching layer lamella of core layer;
Above-mentioned n
Max, n
MinMaximum, minimum value with the refractive index of core layer lamella is identical respectively.
Further, the thickness of said core layer is Dh, and the thickness of said impedance matching layer is Dz, Dz+2Dh=D.
Further; Said second base material comprises second prebasal plate and second metacoxal plate of sheet, and the said a plurality of second artificial micro-structural is folded between second prebasal plate and second metacoxal plate, and the thickness of said impedance matching layer lamella is 0.21-2.5mm; Wherein, The thickness of second prebasal plate is 0.1-1mm, and the thickness of second metacoxal plate is 0.1-1mm, and the thickness of a plurality of second artificial micro-structurals is 0.01-0.5mm.
Further; The said first artificial micro-structural and the second artificial micro-structural be the metal micro structure for being made up of copper cash or silver-colored line all; Said metal micro structure through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method respectively attached on first base material and second base material; Said metal micro structure is the plane flakes; Said metal micro structure has first metal wire and second metal wire of vertically dividing equally each other, and said first metal wire is identical with the length of second metal wire, and the said first metal wire two ends are connected with two first metal branches of equal length; The said first metal wire two ends are connected on the mid point of two first metal branches; The said second metal wire two ends are connected with two second metal branches of equal length, and the said second metal wire two ends are connected on the mid point of two second metal branches, the equal in length of the said first metal branch and the second metal branch.
According to portable satellite antenna of the present invention, reflecting plate is dull and stereotyped for the ultra material that adopts ultra material technology, can adjust antenna elevation angle easily, and small and exquisite being easy to carry.And, by the traditional parabolic reflecting plate of the dull and stereotyped replacement of the ultra material of sheet, to make processing and be more prone to, cost is cheaper, and the dull and stereotyped integral thickness of the ultra material of design is in the millimeter rank according to this, and suitable is frivolous.
The present invention also provides a kind of satellite antenna receiving system, comprises tuner that connects feed and the DVB that is connected with tuner, and said satellite antenna receiving system also comprises above-mentioned portable satellite antenna.
Description of drawings
Fig. 1 is that ultra material plane reflecting plate of the present invention converges electromagnetic sketch map;
Fig. 2 is the perspective diagram of one of them ultra material cell of core layer lamella of the present invention;
Fig. 3 is the structural representation of core layer lamella of the present invention;
Fig. 4 is the structural representation of impedance matching layer lamella of the present invention;
Fig. 5 is the sketch map of the alabastrine metal micro structure in plane of the present invention;
Fig. 6 is a kind of derived structure of the alabastrine metal micro structure in plane shown in Figure 5;
Fig. 7 is a kind of distressed structure of the alabastrine metal micro structure in plane shown in Figure 5.
Fig. 8 is phase I of differentiation of the topology of the alabastrine metal micro structure in plane;
Fig. 9 is the second stage of differentiation of the topology of the alabastrine metal micro structure in plane;
Figure 10 is the structural representation of the portable satellite antenna of an embodiment of the present invention;
Figure 11 is another visual angle figure of Figure 10.
Embodiment
Shown in Figure 10 and 11; Portable satellite antenna according to this invention; The framework 3 and the reflecting plate angle regulating device that comprise feed 1, feed pole 2, reflecting plate 100, fixation reflex plate; One end of said feed pole 2 is fixedly connected with feed 1; The other end is fixed on the framework 3; Said reflecting plate angle regulating device comprise horizontal base 4, lower end through the hinged connecting rod 5 of the first hinge JL1 and horizontal base 4, be arranged on chute HC and the locking device of lock link position on the feed pole 2, said horizontal base 4 also comprises the second hinge JL2 hinged with feed pole 2, the upper end of said connecting rod 5 is under the unlocked state relatively at locking device that chute HC slides.Among the present invention, said feed 1 is traditional corrugated horn, for example the CL11R integral high frequency head of Tongzhou Electronics.
In the present embodiment, said connecting rod 5 is set on the outer surface of feed pole 2, and said locking device comprises slide bolt 6 and be connected the locking nut 7 of slide bolt 6 one ends that said slide bolt 6 runs through connecting rod 5 and chute HC.Realize the slide relative of connecting rod and feed pole through the slip of slide bolt 6 in chute; Horizontal base 4 also has a plurality of horizontal location hole; Like this, can horizontal base be fixed on the ground or other object surfaces of basic horizontal, under the situation that horizontal base is fixed through screw; Unscrew locking nut 7, can realize adjusting the reflecting plate elevation angle.
In the present embodiment, said framework 3 comprises upper side frame 31, middle frame 32 and lower frame 33, and said upper side frame 31, middle frame 32 and lower frame 33 are fixed on the back side of reflecting plate respectively through bolt LS, and said feed pole 2 is also through being bolted on the framework 3.
The elevation angle of reflecting plate 100 and azimuthal adjusting (being the satellite antenna elevation angle and azimuthal adjusting) are specific as follows:
At first, utilize instrument such as compass to confirm the azimuth of antenna, confirm good after, horizontal base 4 is fixed on the ground, for example on the ground with the screw nail; After fixing, the lower surface and the ground of horizontal base are adjacent to.
Then, unscrew locking nut 7 (promptly removing the locking position of connecting rod);
Upwards lift reflecting plate 100, because reflecting plate and the through transport of feed pole, so feed pole can be slided by relative connecting rod 5; By the time appropriate location; Tighten locking nut 7 (being the position of lock link), the appropriate location here is meant, the elevation angle of reflecting plate just equal the satellite that will communicate by letter at the elevation angle in this geographical position; The elevation angle that has promptly reached reflecting plate is regulated, and has realized that promptly the elevation angle of antenna is regulated.
Among the present invention, the size design of the mechanical structure through the reflecting plate angle regulating device can realize that reflecting plate is with respect to horizontal base rotation (being elevation coverage), for example 0-75 degree in certain rotation angle range.
Among the present invention; Said reflecting plate 100 is ultra material plane reflecting plate; Shown in Fig. 1 to 4; In one embodiment of the present of invention; Portable satellite antenna according to the present invention comprises the ultra material plane reflecting plate 100 that is arranged on feed 1 rear; Said ultra material plane reflecting plate 100 comprises core layer 10, be arranged on the reflector 200 on core layer 10 1 side surfaces and be arranged on the impedance matching layer 20 on core layer opposite side surface, and said core layer 10 comprises a core layer lamella or a plurality of core layer lamellas 11 that thickness is identical and refraction index profile is identical, and said core layer lamella 11 comprises first base material 13 of sheet and is arranged on a plurality of first artificial micro-structural 12 on first base material 13; Said impedance matching layer 20 comprises an impedance matching layer lamella 21 or the identical a plurality of impedance matching layer lamellas 21 of thickness, and said impedance matching layer lamella 21 comprises second base material 23 of sheet and is arranged on a plurality of second artificial micro-structural on second base material.The axis Z2 of feed axis Z1 and ultra material plane reflecting plate 100 has certain included angle θ; Be axis Z1 and the angle (Z3 is the parallel lines of Z1) of straight line Z3 among Fig. 1; Feed 1 has been realized the offset-fed of antenna not on the Z2 of the axis of ultra material plane reflecting plate 100.Feed is traditional corrugated horn in addition.In addition, among the present invention, the reflector is the metallic reflection plate with smooth surface, for example can be copper coin, aluminium sheet or the iron plate etc. of polishing, and also PEC (desired electrical conductor) reflecting surface can certainly be a metal coating, for example copper coating.Among the present invention, said ultra material plane reflecting plate 100 arbitrary longitudinal sections are of similar shape and area, and the longitudinal section here is meant section vertical with the axis of ultra material plane reflecting plate in the ultra material plane reflecting plate.The longitudinal section of said ultra material plane reflecting plate is square, circular or oval; Preferably; The longitudinal section of said ultra material plane reflecting plate is square, and the ultra material plane reflecting plate that obtains is like this processed easily, for example the square of 300X300mm or 450X450mm.Circle can be that diameter is 250,300 or the circle of 450mm.
In the present embodiment, as shown in Figure 1, the refraction index profile of said core layer lamella satisfies following formula:
Vseg=s+λ*NUMseg （2）；
Wherein, radius is the refractive index value at r place on n (r) the expression core layer lamella; The refraction index profile center of circle O1 of core layer lamella is the projection of feed equivalent point X on this plane, core layer lamella outer surface place; (sy is correct time, and expression center of circle O1 is in the outside of this core layer lamella at a distance of sy in the lower edge of said center of circle O1 and this core layer lamella; Sy is when negative, and expression center of circle O1 is on this core layer lamella), more preferably, when core layer lamella when being square, the lower edge of center of circle O1 and vertical this core layer lamella of line of the lower edge mid point of this core layer lamella; When the core layer lamella was circle, the line on the summit, lower edge of center of circle O1 and this core layer lamella was on the radius of circle; When the core layer lamella is ellipse, on the oval-shaped major axis on the summit, lower edge of center of circle O1 and this core layer lamella.
S is the vertical range of feed equivalent point X to ultra material plane reflecting plate; In fact the equivalent point X of feed is exactly the feedback point (point of focusing takes place in feed electromagnetic wave) of antenna here; When the angle theta of the axis Z2 of feed axis Z1 and ultra material plane reflecting plate 100 changed, slight change also can take place in s.
The relative position of feed equivalent point X and ultra material plane reflecting plate is confirmed jointly that by s, θ and sy usually, feed equivalent point X is selected on the Z1 of feed axis; The position of feed equivalent point X is relevant with the bore of feed, for example can be and the position (ds be distance that X point in Fig. 1 to Y order) of feed bore mid point Y at a distance of ds, as an embodiment; Said ds equals 5mm, and in fact in design, ds is relevant with θ; Along with the difference of θ, feed equivalent point X position is also different, and promptly ds is different; But the feed equivalent point is still on the Z1 of feed axis.
n
MaxThe maximum of the refractive index of expression core layer lamella;
n
MinThe minimum value of the refractive index of expression core layer lamella;
λ representes that frequency is the electromagnetic wavelength of center of antenna frequency;
D is the equivalent thickness of ultra material plane reflecting plate, and in the present embodiment, preferably, the thickness that equivalent thickness D equals impedance matching layer adds the thickness of the core layer of twice, that is:
If the thickness of core layer is Dh, the thickness of impedance matching layer is Dz, and Dz+2Dh=D is then arranged;
The quantity of core layer lamella and impedance matching layer lamella can be set according to different needs, for example, can be three core layer lamellas, six impedance matching layer lamellas; Also two core layer lamellas, four impedance matching layer lamellas; Also two core layer lamellas, three impedance matching layer lamellas; Also two core layer lamellas, two impedance matching layer lamellas; Also core layer lamella, an impedance matching layer lamella.
Floor representes to round downwards; For example; When
(r is in a certain number range) more than or equal to 0 less than 1 the time; NUMseg gets 0; When
(r is in a certain number range) more than or equal to 1 less than 2 the time; NUMseg gets 1, and the rest may be inferred.
By the determined ultra material plane reflecting plate of formula (1) to formula (4), can make that electromagnetic wave that feed sends can be with the form outgoing perpendicular to the plane wave of ultra material plane reflecting plate behind ultra material plane reflecting plate; Equally; As shown in Figure 1; By the determined ultra material plane reflecting plate of formula (1) to formula (4), the electromagnetic wave (arrival can be thought plane wave during ground, and vertical incidence) that can make satellite send can converge at the equivalent point X place of feed behind ultra material plane reflecting plate; Certainly; When receiving satellite antenna signals, the normal direction of ultra material plane reflecting plate be towards the satellite that will receive, as for how to make ultra material plane reflecting plate normal direction towards to receive the satellite of signal; Then relate to the problem of traditional satellite antenna debugging; Promptly about the adjusting of the antenna azimuth and the angle of pitch, it is common practise, no longer states here.
In the present embodiment, as shown in Figure 3, said first base material 13 comprises first prebasal plate 131 and first metacoxal plate 132 of sheet, and the said a plurality of first artificial micro-structural 12 is folded between first prebasal plate 131 and first metacoxal plate 132.The thickness of said core layer lamella is 0.5-2mm, and wherein, the thickness of first prebasal plate is 0.5-1mm, and the thickness of first metacoxal plate is 0.5-1mm, and the thickness of a plurality of first artificial micro-structurals is 0.01-0.5mm.Preferably, the thickness of said core layer lamella is 1.018mm, and wherein, the thickness of first prebasal plate and first metacoxal plate is 0.5mm, and the thickness of a plurality of first artificial micro-structurals is 0.018mm.
In the present embodiment, the refraction index profile of said one or more impedance matching layer lamellas satisfies following formula:
Wherein, n
i(r) radius is the refractive index value at r place on the expression impedance matching layer lamella; The refraction index profile center of circle of impedance matching layer lamella is the projection of feed equivalent point on plane, corresponding impedance matching layer lamella outer surface place; Preferably, the vertical ultra material plane reflecting plate of line in the refraction index profile center of circle of impedance matching layer lamella and the refraction index profile center of circle of core layer lamella;
Wherein, i representes the numbering of impedance matching layer lamella, and near the m that is numbered of the impedance matching layer lamella of feed, to the core layer direction, numbering reduces successively by feed, is numbered 1 near the impedance matching layer lamella of core layer;
Above-mentioned n
Max, n
MinMaximum, minimum value with the refractive index of core layer lamella is identical respectively;
Particularly, m=2 for example, the impedance matching layer that is then limited formula (5) near the refraction index profile of the impedance matching layer lamella of core layer is:
Its refraction index profile of impedance matching layer near feed is:
n
2(r)=n
min；
Certainly, impedance matching layer is not limited to this, and said each impedance matching layer lamella also can have single refractive index, and the refractive index of said one or more impedance matching layer lamellas satisfies following formula:
Wherein, m representes total number of plies of impedance matching layer, and i representes the numbering of impedance matching layer lamella, wherein, and near the m that is numbered of the impedance matching layer lamella of core layer.
Particularly, m=2 for example, the impedance matching layer that is then limited formula (6) near the refraction index profile of the impedance matching layer lamella of core layer is:
n(2)=(n
max+n
min)/2；
Its refraction index profile of impedance matching layer near feed is:
In the present embodiment, said second base material 23 comprises second prebasal plate 231 and second metacoxal plate 232 of sheet, and the said a plurality of second artificial micro-structural is folded between second prebasal plate 231 and second metacoxal plate 232.The thickness of said impedance matching layer lamella is 0.21-2.5mm, and wherein, the thickness of first prebasal plate is 0.1-1mm, and the thickness of first metacoxal plate is 0.1-1mm, and the thickness of a plurality of first artificial micro-structurals is 0.01-0.5mm.Preferably, the thickness of said impedance matching layer lamella is 1.018mm, and wherein, the thickness of second prebasal plate and second metacoxal plate is 0.5mm, and the thickness of a plurality of second artificial micro-structurals is 0.018mm.
In the present embodiment; The arbitrary longitudinal section of said ultra material plane reflecting plate is of similar shape and area; Be that core layer and matching layer are of similar shape the longitudinal section with area, the longitudinal section here is meant section vertical with the axis of ultra material plane reflecting plate in the ultra material plane reflecting plate.The longitudinal section of said ultra material plane reflecting plate is square, circular or oval, and preferably, the longitudinal section of said ultra material plane reflecting plate is square, and the ultra material plane reflecting plate that obtains is like this processed easily.Preferably, the longitudinal section of ultra material plane reflecting plate of the present invention is that the length of side is the square of 450mm.
In the present embodiment; The said first artificial micro-structural, the second artificial micro-structural be the metal micro structure for being made up of copper cash or silver-colored line all, said metal micro structure through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method respectively attached to first base material, second base material.Preferably, the said first artificial micro-structural, the second artificial micro-structural are the alabastrine metal micro structure in plane shown in Figure 5 develops a plurality of different topology that obtains through topology metal micro structure.
In the present embodiment; The core layer lamella can obtain through following method, promptly on any one surface of first prebasal plate and first metacoxal plate, covers copper, obtains a plurality of first metal micro structures (shape of a plurality of first metal micro structures with arrange in advance through the Computer Simulation acquisition) through etching method again; At last first prebasal plate and first metacoxal plate are pressed together respectively; Promptly obtain core layer lamella of the present invention, the method for pressing can be direct hot pressing, also can be to utilize PUR to connect; Certainly also other mechanical connection, for example bolt connects.
In like manner, the impedance matching layer lamella also can utilize identical method to obtain.Respectively with a plurality of core layer lamella pressing one, promptly formed core layer of the present invention then; Equally, with a plurality of impedance matching layer lamella pressing one, promptly formed impedance matching layer of the present invention; Core layer, impedance matching layer, reflector pressing one are promptly obtained ultra material plane reflecting plate of the present invention.
Among the present invention, said first base material, second base material are made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material etc.Macromolecular material is available to have F4B composite material, FR-4 composite material, PS (polystyrene) etc.
Shown in Figure 5 is the sketch map of the alabastrine metal micro structure in plane; Described alabastrine metal micro structure has the first metal wire J1 and the second metal wire J2 that vertically divides equally each other; The said first metal wire J1 is identical with the length of the second metal wire J2; The said first metal wire J1 two ends are connected with two first F1 of metal branch of equal length; The said first metal wire J1 two ends are connected on the mid point of two first F1 of metal branch; The said second metal wire J2 two ends are connected with two second F2 of metal branch of equal length, and the said second metal wire J2 two ends are connected on the mid point of two second F2 of metal branch, the equal in length of said first F1 of metal branch and second F2 of metal branch.
Fig. 6 is a kind of derived structure of the alabastrine metal micro structure in plane shown in Figure 5.Its two ends at each first F1 of metal branch and each second F2 of metal branch all are connected with identical the 3rd F3 of metal branch, and the mid point of corresponding the 3rd F3 of metal branch links to each other with the end points of first F1 of metal branch and second F2 of metal branch respectively.The rest may be inferred, and the present invention can also derive the metal micro structure of other form.
Fig. 7 is a kind of distressed structure of the alabastrine metal micro structure in plane shown in Figure 5; The metal micro structure of this kind structure; The first metal wire J1 and the second metal wire J2 are not straight lines; But folding line, the first metal wire J1 and the second metal wire J2 are provided with two kink WZ, divide equally but the first metal wire J1 remains vertical with the second metal wire J2; Through be provided with kink towards with the relative position of kink on first metal wire and second metal wire, make metal micro structure shown in Figure 7 wind to revolve the figure that turn 90 degrees with the axis of the second metal wire intersection point to any direction all to overlap with former figure perpendicular to first metal wire.In addition, other distortion can also be arranged, for example, the first metal wire J1 and the second metal wire J2 all are provided with a plurality of kink WZ.
In the present embodiment; Said core layer lamella 11 can be divided into the ultra material cell D a plurality of as shown in Figure 2 of array arrangement; Each ultra material cell D comprises prebasal plate unit U, metacoxal plate unit V and is arranged on the first artificial micro-structural 12 between base board unit U, the metacoxal plate unit V that the length and width height of ultra material cell D all is not more than 1/5th wavelength usually, is preferably 1/10th wavelength; Therefore, can confirm the size of ultra material cell D according to the operating frequency of antenna.Fig. 2 is the technique of painting of perspective, and as shown in Figure 2 with the position among the ultra material cell D that representes the first artificial micro-structural, the said first artificial micro-structural is sandwiched between base board unit U, the metacoxal plate unit V, and its surface, place is represented with SR.
Known refractive index
wherein μ is a relative permeability; ε is a relative dielectric constant, and μ and ε close and be called electromagnetic parameter.Experiment showed, when electromagnetic wave passes through refractive index dielectric material heterogeneous, can be to the big direction deviation of refractive index.Under the certain situation of relative permeability (usually near 1); Refractive index is only relevant with dielectric constant; Under the situation that first base material is selected, utilize the arbitrary value (within the specific limits) that only can realize ultra material cell refractive index, under this center of antenna frequency to the first artificial micro-structural of electric field response; Utilize simulation software; Like CST, MATLAB, COMSOL etc., the dielectric constant of artificial micro-structural (the alabastrine metal micro structure in plane as shown in Figure 5) that obtains a certain given shape through emulation can be listed data one to one along with the situation that the refractive index variable of topology changes; The core layer lamella 11 that the specific refractive index that can design us needs distributes in like manner can obtain the refraction index profile of impedance matching layer lamella.
In the present embodiment, the structural design of core layer lamella can obtain through Computer Simulation (CST emulation), and is specific as follows:
That (1) confirms first metal micro structure adheres to base material (first base material).For example dielectric constant is 2.7 medium substrate, and the material of medium substrate can be FR-4, F4b or PS.
(2) size of definite ultra material cell.The size of the size of ultra material cell is obtained by the centre frequency of antenna, utilizes frequency to obtain its wavelength, gets less than 1/5th a numerical value of wavelength length C D and the width KD as ultra material cell D again.Among the present invention, corresponding to the centre frequency of 11.95G, said ultra material cell D is that long CD and wide KD as shown in Figure 2 is 2.8mm, thickness HD is the square platelet of 1.018mm.
(3) confirm the material and the topological structure of metal micro structure.Among the present invention, the material of metal micro structure is a copper, and the topological structure of metal micro structure is the alabastrine metal micro structure in plane shown in Figure 5, and its live width W is consistent everywhere; The topological structure here is meant the basic configuration that topology develops.
(4) confirm the topology parameter of metal micro structure.As shown in Figure 5, among the present invention, the topology parameter of the alabastrine metal micro structure in plane comprises the live width W of metal micro structure, the length a of the first metal wire J1, the length b of first F1 of metal branch.
(5) confirm the differentiation restrictive condition of the topology of metal micro structure.Among the present invention; The differentiation restrictive condition of the topology of metal micro structure has, the minimum spacing WL between the metal micro structure (promptly as shown in Figure 5, the long limit of metal micro structure and ultra material cell or the distance of broadside are WL/2); The live width W of metal micro structure, the size of ultra material cell; Because the processing technology restriction, WL is more than or equal to 0.1mm, and same, live width W is greater than to equal 0.1mm.During emulation for the first time, WL can get 0.1mm, and W can get 0.3mm, and ultra material cell is of a size of the long and wide 2.8mm that is, thickness is 1.018mm, and this moment, the topology parameter of metal micro structure had only a and two variablees of b.The topology of metal micro structure through as Fig. 7 differentiation mode shown in Figure 8 extremely, corresponding to a certain CF (for example 11.95GHZ), can obtain a continuous variations in refractive index scope.
Particularly, the differentiation of the topology of said metal micro structure comprises two stages (basic configuration that topology develops is a metal micro structure shown in Figure 5):
Phase I: according to developing restrictive condition, under the situation that the b value remains unchanged, a value is changed to maximum from minimum value, the metal micro structure in this evolution process is " ten " font (except when a gets minimum value).In the present embodiment, the minimum value of a is 0.3mm (live width W), and the maximum of a is (CD-WL).Therefore, in the phase I, the differentiation of the topology of metal micro structure is as shown in Figure 8, is the square JX1 of W from the length of side promptly, develops into maximum " ten " font topology JD1 gradually.In the phase I, along with the differentiation of the topology of metal micro structure, the refractive index of the ultra material cell corresponding with it increases (respective antenna one CF) continuously.
Second stage: according to developing restrictive condition, when a was increased to maximum, a remained unchanged; At this moment, b is increased continuously maximum from minimum value, the metal micro structure in this evolution process is the plane flakes.In the present embodiment, the minimum value of b is 0.3mm, and the maximum of b is (CD-WL-2W).Therefore; In second stage, the differentiation of the topology of metal micro structure is as shown in Figure 9, promptly from " ten " font topology JD1 of maximum; Develop into the maximum alabastrine topology JD2 in plane gradually; The alabastrine topology JD2 in the plane of the maximum here is meant that the length b of first J1 of metal branch and second J2 of metal branch can not extend again, otherwise the first metal branch and the second metal branch will take place to intersect.In second stage, along with the differentiation of the topology of metal micro structure, the refractive index of the ultra material cell corresponding with it increases (respective antenna one CF) continuously.
Comprised n if obtain the variations in refractive index scope of ultra material cell through above-mentioned differentiation
MinTo n
MaxContinuous excursion, then satisfy design demand.Do not satisfy design demand if above-mentioned differentiation obtains the variations in refractive index scope of ultra material cell, for example maximum is too little or minimum value is excessive, then changes WL and W, and emulation again is up to obtaining the variations in refractive index scope that we need.
According to formula (1) to (6); After a series of ultra material cell that emulation is obtained is arranged according to its corresponding refractive index (in fact being exactly a plurality of first artificial micro-structural the arranging on first base material of different topology shape), can obtain core layer lamella of the present invention.
In like manner, can obtain impedance matching layer lamella of the present invention.
Among the another kind of embodiment of the present invention, said ultra material plane reflecting plate 100 does not have impedance matching layer, and in this embodiment, the thickness of said core layer is Dh, 2Dh=D.Other identical with the above embodiments.
In addition, the present invention also provides a kind of satellite antenna receiving system, comprises the tuner 30 that connects feed 1 and the DVB that is connected through cable with tuner 30 (not indicating among the figure) and portable satellite antenna of the present invention.Among the present invention, said feed 1 is traditional corrugated horn.DVB and tuner also are existing technology, no longer state here.
Said feed for example can be the CL11R integral high frequency head of Tongzhou Electronics, and incoming frequency is 11.7～12.2GHz, and output frequency is 950～1450MHz, can watch most of Ku band satellite TV.
DVB for example can adopt the N6188 of Tongzhou Electronics, is used to receive the satellite TV signal of No. 9, culminant star.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. portable satellite antenna; It is characterized in that; The framework and the reflecting plate angle regulating device that comprise feed, feed pole, reflecting plate, fixation reflex plate; One end of said feed pole is fixedly connected with feed, and the other end is fixed on the framework, said reflecting plate angle regulating device comprise horizontal base, lower end through the hinged connecting rod of first hinge and horizontal base, be arranged on chute and the locking device of lock link position on the feed pole; Said horizontal base also comprises second hinge hinged with feed pole; The upper end of said connecting rod is in chute slip relatively under the unlocked state at locking device, and said reflecting plate is dull and stereotyped for ultra material, and said ultra material flat board comprises core layer and is arranged on the reflector of core layer one side surface; Said core layer comprises a core layer lamella or a plurality of identical core layer lamellas, and each core layer lamella comprises first base material of sheet and is arranged on a plurality of first artificial micro-structural on first base material.
2. portable satellite antenna according to claim 1; It is characterized in that; Said connecting rod is set on the outer surface of feed pole, and said locking device comprises slide bolt and be connected the locking nut of slide bolt one end that said slide bolt runs through connecting rod and chute.
3. portable satellite antenna according to claim 1 is characterized in that, the refraction index profile of said core layer lamella satisfies following formula:
Vseg=s+λ×NUMseg；
Wherein, radius is the refractive index value at r place on n (r) the expression core layer lamella, and the refraction index profile center of circle of core layer lamella is the projection of feed equivalent point on this plane, core layer lamella place;
S is the vertical range of feed equivalent point to ultra material plane reflecting plate;
n
MaxThe maximum of the refractive index of expression core layer lamella;
n
MinThe minimum value of the refractive index of expression core layer lamella;
λ representes that frequency is the electromagnetic wavelength of center of antenna frequency;
Floor representes to round downwards.
4. portable satellite antenna according to claim 3 is characterized in that, the thickness of said core layer is Dh, 2Dh=D.
5. portable satellite antenna according to claim 3 is characterized in that, said first base material comprises first prebasal plate and first metacoxal plate of sheet; The said a plurality of first artificial micro-structural is folded between first prebasal plate and first metacoxal plate; The thickness of said core layer lamella is 0.21-2.5mm, and wherein, the thickness of first prebasal plate is 0.1-1mm; The thickness of first metacoxal plate is 0.1-1mm, and the thickness of a plurality of first artificial micro-structurals is 0.01-0.5mm.
6. portable satellite antenna according to claim 3; It is characterized in that; Said ultra material plane reflecting plate also comprises the impedance matching layer that is arranged on core layer opposite side surface; Said impedance matching layer comprises an impedance matching layer lamella or the identical impedance matching layer lamella of a plurality of thickness; Said impedance matching layer lamella comprises second base material of sheet and is arranged on a plurality of second artificial micro-structural on second base material that the refraction index profile of said one or more impedance matching layer lamellas satisfies following formula:
Wherein, n
i(r) radius is the refractive index value at r place on the expression impedance matching layer lamella, and the refraction index profile center of circle of impedance matching layer lamella is the projection of feed equivalent point on plane, corresponding impedance matching layer lamella outer surface place;
Wherein, i representes the numbering of impedance matching layer lamella, and near the m that is numbered of the impedance matching layer lamella of feed, to the core layer direction, numbering reduces successively by feed, is numbered 1 near the impedance matching layer lamella of core layer;
Above-mentioned n
Max, n
MinMaximum, minimum value with the refractive index of core layer lamella is identical respectively.
7. portable satellite antenna according to claim 6 is characterized in that, the thickness of said core layer is Dh, and the thickness of said impedance matching layer is Zz, Zz+2Dh=D.
8. portable satellite antenna according to claim 6 is characterized in that, said second base material comprises second prebasal plate and second metacoxal plate of sheet; The said a plurality of second artificial micro-structural is folded between second prebasal plate and second metacoxal plate; The thickness of said impedance matching layer lamella is 0.21-2.5mm, and wherein, the thickness of second prebasal plate is 0.1-1mm; The thickness of second metacoxal plate is 0.1-1mm, and the thickness of a plurality of second artificial micro-structurals is 0.01-0.5mm.
9. portable satellite antenna according to claim 6; It is characterized in that; The said first artificial micro-structural and the second artificial micro-structural be the metal micro structure for being made up of copper cash or silver-colored line all; Respectively attached on first base material and second base material, said metal micro structure is the plane flakes to said metal micro structure through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method, and said metal micro structure has first metal wire and second metal wire of vertically dividing equally each other; Said first metal wire is identical with the length of second metal wire; The said first metal wire two ends are connected with two first metal branches of equal length, and the said first metal wire two ends are connected on the mid point of two first metal branches, and the said second metal wire two ends are connected with two second metal branches of equal length; The said second metal wire two ends are connected on the mid point of two second metal branches, the equal in length of the said first metal branch and the second metal branch.
10. a satellite antenna receiving system comprises tuner that connects feed and the DVB that is connected with tuner, it is characterized in that said satellite antenna receiving system also comprises like any described portable satellite antenna of claim 1 to 9.
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| CN201210226208.6A CN102760950B (en) | 2012-07-03 | 2012-07-03 | Portable satellite antenna and satellite antenna receiving system |
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| CN201210226208.6A CN102760950B (en) | 2012-07-03 | 2012-07-03 | Portable satellite antenna and satellite antenna receiving system |
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| CN103985950A (en) * | 2014-04-23 | 2014-08-13 | 中国电子科技集团公司第十四研究所 | Two-pose locking mechanism |
| CN104767034A (en) * | 2015-03-06 | 2015-07-08 | 江苏麦科讯通信科技有限公司 | Antenna horizontal polarization feed structure |
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| US20010045912A1 (en) * | 2000-05-29 | 2001-11-29 | Eric Liu | Dish antenna rotation apparatus |
| CN201655976U (en) * | 2010-03-11 | 2010-11-24 | 马骅 | Ku waveband portable folding receiving antenna for satellite television |
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| CN102760950B (en) | 2015-03-11 |
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