CN201233967Y - High isolation antenna radiation unit - Google Patents
High isolation antenna radiation unit Download PDFInfo
- Publication number
- CN201233967Y CN201233967Y CNU2008201093291U CN200820109329U CN201233967Y CN 201233967 Y CN201233967 Y CN 201233967Y CN U2008201093291 U CNU2008201093291 U CN U2008201093291U CN 200820109329 U CN200820109329 U CN 200820109329U CN 201233967 Y CN201233967 Y CN 201233967Y
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- oscillator arms
- electrically connected
- short
- reflecting plate
- radiation unit
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Abstract
The utility model discloses a high isolation antenna radiating element which comprises a reflecting plate and at least two groups of radiating elements. Each group of radiating elements comprise two pairs of centrally symmetrical plate-shaped oscillator arms, gaps are formed among all the oscillator arms, the oscillator arms are distributed in a bow tie shape and not mutually communicated, and distances with matched Balun height are formed between a reflecting plate and the oscillator arms; the antenna radiating element also comprises a short circuit piece which is provided with a copper foil, a feeding bridge, a short circuit support and a feeding coaxial line; one end of the short circuit support is respectively electrically connected with one end of the feeding bridge and the oscillator arms, and the other end thereof is electrically connected with the copper foil of the short circuit piece; the feeding coaxial line comprise an outer conductor and an inner conductor, one end of the outer conductor is electrically connected with the copper foil of the short circuit piece, the other end thereof is electrically connected with the other ends of the oscillator arms, and the inner conductor is electrically connected with the feeding bridge; the feeding coaxial line, the feeding bridge, the short circuit piece and the short circuit support form a loop which can achieve the purpose of Balun matching. The antenna radiating element has the advantages that the isolation degree is high, the structure is simple, the processing is easy, the fabrication cost is low, and the uniformity is good.
Description
Technical field
The utility model is about the antenna radiation unit in a kind of antenna of mobile communication base station, more particularly, and about a kind of high-isolation antenna radiation unit.
Background technology
In moving communicating field, dual polarized antenna is extensively used owing to have the functional characteristics of channeling and polarization diversity.Dual polarized antenna is to utilize the multipath propagation feature to receive signal dispersion, that be independent of each other connection, and the antenna that+45 ° and-45 ° of two consequent pole direction are mutually orthogonal also is operated under the transmission duplex pattern simultaneously.Therefore, it has the following advantages:
1, saves the antenna amount of single directional base station.The directional base station (three sectors) of general GSM or CDMA digital mobile communication network will use 9 antennas, and 3 antennas of each fan-shaped use (space diversity, one two receipts) are if use the dual polarized antenna of polarization diversity, 1 antenna of each fan-shaped needs.
2, the space interval between the dual polarized antenna only needs 20-30cm.In dual polarized antenna, ± 45 ° polarization orthogonal can guarantee+isolation between 45 ° and-45 ° of two slave antennas satisfies the requirement of intermodulation to isolation between antennas.
3, dual polarized antenna can reduce call loss in mobile radio communication, reduces to disturb, and improves the service quality of the whole network.
4, save capital expenditure, can make station layout more reasonable, selecting of site, base station is easier.Dual polarized antenna is not high to setting up installation requirement, does not need expropriation of land to build tower, only needs the iron prop of a diameter 20cm of frame, dual polarized antenna is fixed on the iron prop by corresponding coverage direction get final product.
The isolation of dual polarized antenna needs greater than 28dB according to the requirement of mobile communications industry standard YD/T-1059-2004.Therefore, mentality of designing and the scheme to antenna has higher requirement.Solve isolating problem reality and just solve coupled problem between polarization+45 ° and-45 °.The polarization coupling of single oscillator and the coupling between the unit are depended in the polarization coupling.And the coupling between unit wherein is more crucial, and the unit that therefore has good index is the basis of Antenna Design well.
At present, dual polarized antenna unit usually adopts " cross " cross modal.As shown in Figure 1, half-wave dipole so be called the half-wavelength oscillator, is called for short in each brachium λ/4, length overall λ/2.Single polarization oscillator arms is shaped as " rectangle ", and coaxial line is by oscillator one end feed, and to the other end, oscillator arms is supported and contact with reflecting plate by the feed tab feed, forms the closed-loop path, and the height of support is λ/4 coupling Ba Lun.For easy to process, panel beating moulding commonly used.This cell isolation degree usually can only be accomplished 22dB, need install some spacer assemblys again additional after unit combination forms array and adjust, and unit interval is also bigger to its influence, accomplish that broadband satisfies the requirement of 28dB, relatively difficulty.And if spacer assembly too much then can influence the antenna pattern index.
The utility model content
In view of this, main purpose of the present utility model is to provide a kind of not only isolation height, and simple in structure, handling ease, and cost of manufacture is low, the high-isolation antenna radiation unit of high conformity.
In order to achieve the above object, the technical solution of the utility model is achieved in that a kind of high-isolation antenna radiation unit, the radiating element that it includes reflecting plate and is arranged at least two groups of described reflecting plate one side, and described every group of radiating element includes:
Two pairs of tabular oscillator arms that are centrosymmetric are provided with the space between described each oscillator arms, and described oscillator arms is the bowtie-shaped distribution and is not interconnected, and is formed with the distance of the Ba Lun height dimension of coupling between described reflecting plate and the described oscillator arms;
Can make electric current arrive the short-circuit piece of described oscillator arms, described short-circuit piece is arranged on the opposite side of described reflecting plate, and described short-circuit piece is provided with the Copper Foil that is used to conduct electricity;
Be arranged on the feed bridge of described oscillator arms top;
Be arranged on short circuit support and feed coaxial line between described oscillator arms and the described reflecting plate, the end that described short circuit is supported is electrically connected with an end of described feed bridge and described oscillator arms respectively, and the other end that described short circuit is supported is electrically connected with the Copper Foil of described short-circuit piece; Described feed coaxial line includes outer conductor and inner wire, and an end of described outer conductor is electrically connected with the Copper Foil of described short-circuit piece, and the other end of described outer conductor is electrically connected with the other end of described oscillator arms, and described inner wire is electrically connected with described feed bridge;
Constitute the loop that can reach Ba Lun coupling purpose by described feed coaxial line, described feed bridge, described short-circuit piece, described short circuit support.
Described feed bridge includes macropore and aperture, and described macropore supports with described short circuit and is electrically connected, and described aperture is electrically connected with described inner wire.
Described oscillator arms is arranged on the side of described reflecting plate by medium nail and support column.
Described short-circuit piece is arranged on the opposite side of described reflecting plate by screw.
The mode of described electrical connection is welding.
The material of described oscillator arms, described feed bridge and described short-circuit piece is a printed circuit board (PCB).
The material of described support column is a polyformaldehyde.
Beneficial effect after the employing technique scheme is: in the high-isolation antenna radiation unit of the present utility model, the cell isolation degree can reach 30dB, and the isolation behind the unit combination formation array also can satisfy the requirement of 28dB.Not only have high-isolation, and simple in structure, handling ease, cost of manufacture is low, the high-isolation antenna radiation unit of high conformity.Can be suitable for the frequency of 806MHz-960MHz, by the varying sized 1710MHz-2170MHz frequency that can also be suitable for 3G.
Description of drawings
Fig. 1 is the structural representation of conventional antenna element;
Fig. 2 be in the utility model the high-isolation antenna radiation unit perspective view;
Fig. 3 is the structure exploded perspective view of high-isolation antenna radiation unit in the utility model;
Fig. 4 is combined to form the structural representation of linear array for high-isolation antenna radiation unit in the utility model;
Fig. 5 is the front view of the oscillator arms of high-isolation antenna radiation unit in the utility model;
Fig. 6 is the structural representation of the oscillator arms back side cross of high-isolation antenna radiation unit in the utility model;
Fig. 7 is the front view of the short-circuit piece of high-isolation antenna radiation unit in the utility model;
Fig. 8 is the enlarged diagram of the feed bridge positive and negative of high-isolation antenna radiation unit in the utility model.
Embodiment
Below in conjunction with accompanying drawing specific embodiment in the utility model is described in further detail.
High-isolation antenna radiation unit in the utility model includes: reflecting plate 1 is arranged on the radiating element (as shown in Figure 4) of at least two groups of reflecting plate 1 one sides.
Every group of radiating element includes: two pairs of tabular oscillator arms 3 that are centrosymmetric, be arranged on the short-circuit piece 9 of the opposite side of reflecting plate 1, be arranged on the feed bridge 4 of oscillator arms 3 tops, and be arranged on short circuit support 2 and feed coaxial line 10 between oscillator arms 3 and the reflecting plate 1, as Fig. 2, shown in Figure 3.Wherein, oscillator arms 3, feed bridge 4 can be printed circuit board (PCB) (Printed circuit board with the material of short-circuit piece 9, PCB), not as limit, if can provide the fixing assembling of various electronic devices and components such as integrated circuit mechanical support, realize the wiring between the various electronic devices and components such as integrated circuit and be electrically connected or electric insulation, provide the material of desired electrical characteristic.And be provided with the cross that to adjust impedance at the back side of oscillator arms 3.
Short-circuit piece 9 is provided with the Copper Foil that is used to conduct electricity, and as shown in Figure 7, short-circuit piece 9 can make electric current arrive oscillator arms 3.Make oscillator arms 3 complete and impedance matchings.
As shown in Figure 8, the Copper Foil of the positive b of feed bridge 4 connects+45 ° of polarization, and the Copper Foil of reverse side c connects-45 ° of polarization, and described two feeds polarization is by the pcb board dielectric isolation.Feed bridge 4 includes macropore and aperture, and described macropore and aperture are plated-through hole.
One end of short circuit support 2 is electrically connected with the macropore of feed bridge 4 and an end of oscillator arms 3 respectively, and the other end of short circuit support 2 is electrically connected with the Copper Foil of short-circuit piece 9, and the mode of electrical connection is welding.
Feed coaxial line 10 includes outer conductor and inner wire, one end of outer conductor is electrically connected with the Copper Foil of short-circuit piece 9, and the other end of outer conductor is electrically connected with the other end of oscillator arms 3, and inner wire is electrically connected with the aperture of feed bridge 4, similarly, the mode of electrical connection is welding.
Feed coaxial line 10, feed bridge 4, short-circuit piece 9, short circuit are supported 2 and are constituted the loop, reach the purpose of Ba Lun coupling.
As shown in Figure 4, high-isolation antenna radiation unit of the present utility model is combined to form linear array, when size that reasonably changes oscillator arms 3 flat boards and Ba Lun height dimension, the antenna element resonance frequency changes, simultaneously when the width of rationally adjusting oscillator arms 3 back side crosses and length dimension, as shown in Figure 6, can reach impedance matching.Because the shape of oscillator arms 3 does not change, so isolation and other index big variation can not take place, and have reached designing requirement, promptly 30dB can guarantee that the operating frequency of oscillator arms 3 is 806MHz-960MHz simultaneously, perhaps 1710MHz-2170MHz.
The above only is a preferable possible embodiments of the present utility model, is not in order to limit scope of the present utility model.
Claims (7)
1, a kind of high-isolation antenna radiation unit is characterized in that, the radiating element that it includes reflecting plate and is arranged at least two groups of described reflecting plate one side, and described every group of radiating element includes:
Two pairs of tabular oscillator arms that are centrosymmetric are provided with the space between described each oscillator arms, and described oscillator arms is the bowtie-shaped distribution and is not interconnected, and is formed with the distance of the Ba Lun height dimension of coupling between described reflecting plate and the described oscillator arms;
Can make electric current arrive the short-circuit piece of described oscillator arms, described short-circuit piece is arranged on the opposite side of described reflecting plate, and described short-circuit piece is provided with the Copper Foil that is used to conduct electricity;
Be arranged on the feed bridge of described oscillator arms top;
Be arranged on short circuit support and feed coaxial line between described oscillator arms and the described reflecting plate, the end that described short circuit is supported is electrically connected with an end of described feed bridge and described oscillator arms respectively, and the other end that described short circuit is supported is electrically connected with the Copper Foil of described short-circuit piece; Described feed coaxial line includes outer conductor and inner wire, and an end of described outer conductor is electrically connected with the Copper Foil of described short-circuit piece, and the other end of described outer conductor is electrically connected with the other end of described oscillator arms, and described inner wire is electrically connected with described feed bridge;
Constitute the loop that can reach Ba Lun coupling purpose by described feed coaxial line, described feed bridge, described short-circuit piece, described short circuit support.
2, high-isolation antenna radiation unit according to claim 1 is characterized in that, described feed bridge includes macropore and aperture, and described macropore supports with described short circuit and is electrically connected, and described aperture is electrically connected with described inner wire.
3, high-isolation antenna radiation unit according to claim 1 is characterized in that, described oscillator arms is arranged on the side of described reflecting plate by medium nail and support column.
4, high-isolation antenna radiation unit according to claim 1 is characterized in that, described short-circuit piece is arranged on the opposite side of described reflecting plate by screw.
According to the described high-isolation antenna radiation unit of any claim in the claim 1 to 4, it is characterized in that 5, the mode of described electrical connection is welding.
6, according to the described high-isolation antenna radiation unit of any claim in the claim 1 to 4, it is characterized in that the material of described oscillator arms, described feed bridge and described short-circuit piece is a printed circuit board (PCB).
7, according to the described high-isolation antenna radiation unit of any claim in the claim 1 to 4, it is characterized in that the material of described support column is a polyformaldehyde.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201093291U CN201233967Y (en) | 2008-07-18 | 2008-07-18 | High isolation antenna radiation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201093291U CN201233967Y (en) | 2008-07-18 | 2008-07-18 | High isolation antenna radiation unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201233967Y true CN201233967Y (en) | 2009-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201093291U Expired - Fee Related CN201233967Y (en) | 2008-07-18 | 2008-07-18 | High isolation antenna radiation unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201233967Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664662A (en) * | 2012-04-27 | 2012-09-12 | 深圳光启创新技术有限公司 | Wireless mobile interconnect device with multi-antenna system |
| CN104319480A (en) * | 2014-11-10 | 2015-01-28 | 中国电子科技集团公司第五十四研究所 | UHF, S and C three-frequency-band common-caliber miniature antenna |
| WO2023102905A1 (en) * | 2021-12-06 | 2023-06-15 | 广州司南技术有限公司 | Dual-polarized antenna |
-
2008
- 2008-07-18 CN CNU2008201093291U patent/CN201233967Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664662A (en) * | 2012-04-27 | 2012-09-12 | 深圳光启创新技术有限公司 | Wireless mobile interconnect device with multi-antenna system |
| CN104319480A (en) * | 2014-11-10 | 2015-01-28 | 中国电子科技集团公司第五十四研究所 | UHF, S and C three-frequency-band common-caliber miniature antenna |
| CN104319480B (en) * | 2014-11-10 | 2017-09-15 | 中国电子科技集团公司第五十四研究所 | A kind of frequency range Shared aperture miniature antenna of UHF, S, C tri- |
| WO2023102905A1 (en) * | 2021-12-06 | 2023-06-15 | 广州司南技术有限公司 | Dual-polarized antenna |
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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: 20090506 Termination date: 20120718 |