CN201038315Y - Antenna broad band matched balance converter and antenna radiation unit - Google Patents
Antenna broad band matched balance converter and antenna radiation unit Download PDFInfo
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- CN201038315Y CN201038315Y CNU2007200059782U CN200720005978U CN201038315Y CN 201038315 Y CN201038315 Y CN 201038315Y CN U2007200059782 U CNU2007200059782 U CN U2007200059782U CN 200720005978 U CN200720005978 U CN 200720005978U CN 201038315 Y CN201038315 Y CN 201038315Y
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- balancing unit
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- dipole
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Abstract
The utility model discloses an antenna broad band matching balance-to-unbalance transformer and an aerial radiation unit which comprises the transformer, comprising a gap balancing unit and a ring balancing unit; wherein the ring balancing unit takes a hoop or polygonal hollow cylinder structure, the gap balancing unit is arranged inside outside the ring balancing unit, and a certain gap is arranged between the gap balancing unit and the ring balancing unit; one end of the gap balancing unit is connected with a crisscross dipole, having simple structure; and the ring balancing unit is electrically connected with the gap balancing unit by a reflecting floor board, making the current in the dipole more balanceable, thereby improving the impedance bandwidth(VSWR bandwidth) and the port isolation of the aerial radiation unit; therefore, the utility model is mainly applicable to the antenna broad band matching technique which belongs to the field of telephonic communication technology.
Description
Technical field
The utility model relates to communication technical field, relates in particular to a kind of balanced to unbalanced transformer and antenna radiation unit that is used for antenna broadband coupling.
Background technology
Antenna broadband matching technique mainly is the complex impedance component of eliminating in the antenna feed impedance, makes antenna feed impedance as far as possible near the impedance of feeder line, to obtain good matching properties.Mainly contain technical schemes such as balanced to unbalanced transformer and impedance transformer.Balanced to unbalanced transformer commonly used at present is mainly the symmetrical expression balancer, because its structure is simple and compact relatively, is widely used in antenna broadband coupling; And impedance transformer is because its structure relative complex, and its range of application is restricted.
One of balanced to unbalanced transformer of the prior art as shown in Figure 1, is the clearance type balancer, opens two grooves 8 usually on coaxial outer conductor 6 vertically, the length of groove 8 be generally centre frequency space wavelength 1/4th, have the effect of balance and impedance conversion concurrently.
When with this clearance type balancer the single-polarized antenna radiating element being carried out the feed coupling, an arm of dipole 3 is connected with coaxial outer conductor 6, and another arm of dipole 3 is connected with coaxial inner conductor 7, and its compact conformation is easy to realize.But this clearance type balancer, owing to can not realize the balance of electric current on the dipole fully, so its working band is narrower, power capacity is less; When dual polarization antenna radiation unit being carried out the feed coupling with it, the structure relative complex, and interport isolation is relatively poor.
Two of balanced to unbalanced transformer of the prior art, as shown in Figure 2, be two-wire symmetrical expression balancer, usually additional balancing segment 9 is a metal cylinder, or other electric conductor, its length is 1/4th of centre frequency wavelength, and the diameter of additional balancing segment 9 is identical with the diameter of coaxial outer conductor 6, is electrically connected with coaxial outer conductor 6 on reflection floor 4.An arm of dipole 3 is connected with coaxial outer conductor 6; Another arm of dipole 3 is connected with additional balancing segment 9, and is electrically connected with coaxial inner conductor 7.
The structure of this balancer can cause the electric current that comes from coaxial outer conductor 6 because additional balancing segment 9 has bypass action on the promptly additional balancing segment 9, form unwanted path, influences the effect of balanced balanced current.Thereby can influence its bandwidth of operation.Equally, when with it dual polarization antenna radiation unit being carried out the feed coupling, its structure is very complicated, is not easy to realize.
The utility model content
Specific embodiment of the utility model provides a kind of antenna broadband simple in structure, that working band is wide, interport isolation is high to mate balanced to unbalanced transformer, and comprises the antenna radiation unit of this transducer.
The purpose of specific embodiment of the utility model is achieved through the following technical solutions:
The specific embodiment of antenna broadband of the present utility model coupling balanced to unbalanced transformer comprises the slit balancing unit, also comprises annular balancing unit, and described annular balancing unit and slit balancing unit set with each other, between be provided with the gap.
The specific embodiment of antenna radiation unit of the present utility model, comprise reflection floor, dipole, be provided with above-mentioned antenna broadband coupling balanced to unbalanced transformer between described reflection floor and the dipole, an end of described slit balancing unit is connected with the reflection floor, and the other end is connected with dipole; One end of described annular balancing unit is connected with the reflection floor, and realizes being electrically connected by reflection floor and slit balancing unit.
The technical scheme that is provided by above-mentioned the utility model as can be seen, antenna broadband coupling balanced to unbalanced transformer described in the utility model, and comprise the antenna radiation unit of this transducer, owing to comprise slit balancing unit and annular balancing unit, between be provided with certain clearance, form two balanced feed structure, simple in structure.Annular balancing unit and slit balancing unit now are electrically connected by firm and hard reflectingly, make the electric current balance more on the dipole, can improve the impedance bandwidth (VSWR bandwidth) and the interport isolation of antenna radiation unit.Mainly be applicable to the antenna Broadband Matching technology in the technical field of telecommunications.
Description of drawings
Fig. 1 is the structural representation of the antenna radiation unit that has the clearance type balancer of prior art one;
Fig. 2 is the structural representation of the antenna radiation unit that has two-wire symmetrical expression balancer of prior art two;
Fig. 3 is the structural representation of the specific embodiment one of antenna broadband coupling balanced to unbalanced transformer of the present utility model and antenna radiation unit;
Fig. 4 is the feeding classification schematic diagram of antenna broadband coupling balanced to unbalanced transformer of the present utility model and antenna radiation unit;
Fig. 5 is the structural representation of the specific embodiment two of antenna broadband coupling balanced to unbalanced transformer of the present utility model and antenna radiation unit;
Fig. 6 is the structural representation of the specific embodiment three of antenna broadband coupling balanced to unbalanced transformer of the present utility model and antenna radiation unit;
Fig. 7 is the structural representation of the specific embodiment four of antenna broadband coupling balanced to unbalanced transformer of the present utility model and antenna radiation unit;
Fig. 8 is the structural representation of the specific embodiment five of antenna broadband coupling balanced to unbalanced transformer of the present utility model and antenna radiation unit.
Embodiment
Antenna broadband coupling balanced to unbalanced transformer of the present utility model and antenna radiation unit, its specific embodiment one as shown in Figure 3, wherein antenna broadband coupling balanced to unbalanced transformer comprises slit balancing unit 2 and annular balancing unit 1, slit balancing unit 2 sets with each other with annular balancing unit 1, between be provided with certain clearance, form two balanced feed structure.
As shown in Figure 3, antenna radiation unit of the present utility model comprises reflection floor 4, dipole 3, is provided with above-mentioned antenna broadband coupling balanced to unbalanced transformer between reflection floor 4 and dipole 3, and wherein an end of slit balancing unit 2 is connected with reflection floor 4; The other end is connected with dipole 3.
Above-mentioned slit balancing unit 2 symmetries have four longitudinal slots, and the length of longitudinal slot is 3/20 to 7/20 space wavelength of centre frequency, preferred 1/4 wavelength, and have certain width.The lower end of slit balancing unit 2 is connected with reflection floor 4, and the upper end is connected with dipole 3.Wherein dipole 3 has two pairs, is cross layout, and wherein each electrode couple 3 comprises two arms.
This antenna radiation unit with two electrode couple 3 is called dual polarization antenna radiation unit.
Antenna radiation unit of the present utility model also can be used as the single-polarized antenna radiating element, when as the single-polarized antenna radiating element, comprises a pair of dipole.
Above-mentioned annular balancing unit 1 be enclosed in slit balancing unit 2 around, slit balancing unit 2 is provided with distributing point 5 with the junction of dipole 3, can be connected with feeder cable.
As shown in Figure 4, above-mentioned feeder cable has two, and each bar feeder cable is connected with a pair of dipole 3 respectively.The feeder cable here is the coaxial feeding cable, comprises coaxial inner conductor 7 and coaxial outer conductor 6, and wherein coaxial inner conductor 7 is connected with the one arm of dipole 3, and coaxial outer conductor 7 is connected with the other one arm of dipole 3 by short-circuit piece 10.
Specific embodiment two as shown in Figure 5, annular balancing unit 1 also can be located at the inside of slit balancing unit 2.Also set with each other, between leave the gap.
Described annular balancing unit 1 also can be polygon hollow posts structure, and the cross section can be shapes such as circle, ellipse or regular polygon.
Specific embodiment three as shown in Figure 6, annular balancing unit 1 is a square hollow posts structure, is enclosed within the outside of slit balancing unit.
Specific embodiment four as shown in Figure 7, annular balancing unit 1 is a square hollow posts structure, is enclosed within the inside of slit balancing unit.
Above-mentioned annular balancing unit 1 can be the circular column of sealing, also can have the slit on its wall, and the slit preferably has two or four, and symmetry also is parallel to the axis of annular balancing unit respectively.
Specific embodiment five as shown in Figure 8, annular balancing unit 1 is an annular hollow posts structure, is enclosed within the outside of slit balancing unit 2, has four slits on the wall of annular balancing unit 1, symmetry also is parallel to the axis of annular balancing unit 1 respectively.
Equally, be enclosed within the structure of the inside of slit balancing unit 2, and be the structure of polygon hollow posts, also can on the wall of annular balancing unit 1, have above-mentioned slit for annular balancing unit 1 for annular balancing unit 1.
The above-mentioned annular balancing unit and the length of slit balancing unit are preferably 3/20 wavelength to 7/20 wavelength of centre frequency, preferred 1/4 wavelength.
The utility model adopts the feeding classification of antenna radiation unit being carried out two balanced structures, improves its VSWR (standing-wave ratio) bandwidth and interport isolation.On the basis of slit balancing unit 2, add an annular balancing unit 1 that is connected with the floor, slit balancing unit 2 is provided with distributing point 5 with the junction of dipole 3, can be connected with feeder cable.The outer conductor of feeder cable is linked to each other with an arm of dipole 3, inner wire links to each other with another arm, annular balancing unit 1 realizes being electrically connected by reflection floor 4 with slit balancing unit 2, make the electric current balance more on the dipole, increase the bandwidth of its impedance, reach the purpose of improving its VSWR bandwidth and interport isolation frequency response.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.
Claims (9)
1. antenna broadband coupling balanced to unbalanced transformer is characterized in that comprise slit balancing unit and annular balancing unit, described annular balancing unit and slit balancing unit set with each other, between be provided with the gap.
2. antenna broadband coupling balanced to unbalanced transformer according to claim 1 is characterized in that described annular balancing unit is an annular hollow posts structure.
3. antenna broadband coupling balanced to unbalanced transformer according to claim 1 is characterized in that described annular balancing unit is a regular polygon hollow posts structure.
4. according to 3 each described antenna broadband coupling balanced to unbalanced transformers of claim 1, it is characterized in that described slit balancing unit is located at the inside of annular balancing unit.
5. according to 3 each described antenna broadband coupling balanced to unbalanced transformers of claim 1, it is characterized in that described slit balancing unit is located at the outside of annular balancing unit.
6. according to 3 each described antenna broadband coupling balanced to unbalanced transformers of claim 1, it is characterized in that, vertically have the slit on the wall of described annular balancing unit.
7. according to 3 each described antenna broadband coupling balanced to unbalanced transformers of claim 1, it is characterized in that the length of described annular balancing unit and slit balancing unit is 3/20 wavelength to 7/20 wavelength of centre frequency.
8. antenna broadband coupling balanced to unbalanced transformer according to claim 7 is characterized in that the length of described annular balancing unit and slit balancing unit is 1/4 wavelength of centre frequency.
9. antenna radiation unit, comprise reflection floor, dipole, it is characterized in that, be provided with the described antenna broadband coupling of claim 1 to 8 balanced to unbalanced transformer between described reflection floor and the dipole, one end of described slit balancing unit is connected with the reflection floor, and the other end is connected with dipole; One end of described annular balancing unit is connected with the reflection floor, and realizes being electrically connected by reflection floor and slit balancing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200059782U CN201038315Y (en) | 2007-04-05 | 2007-04-05 | Antenna broad band matched balance converter and antenna radiation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200059782U CN201038315Y (en) | 2007-04-05 | 2007-04-05 | Antenna broad band matched balance converter and antenna radiation unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201038315Y true CN201038315Y (en) | 2008-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200059782U Expired - Fee Related CN201038315Y (en) | 2007-04-05 | 2007-04-05 | Antenna broad band matched balance converter and antenna radiation unit |
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| Country | Link |
|---|---|
| CN (1) | CN201038315Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587984B (en) * | 2009-06-18 | 2013-09-11 | 上海交通大学 | Boradband miniaturisation four-terminal port antennae located on the cylinder conductor platform |
-
2007
- 2007-04-05 CN CNU2007200059782U patent/CN201038315Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587984B (en) * | 2009-06-18 | 2013-09-11 | 上海交通大学 | Boradband miniaturisation four-terminal port antennae located on the cylinder conductor platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 Termination date: 20140405 |