CN107634332A - A kind of element microstrip array antenna for reducing coupling - Google Patents
A kind of element microstrip array antenna for reducing coupling Download PDFInfo
- Publication number
- CN107634332A CN107634332A CN201710821128.8A CN201710821128A CN107634332A CN 107634332 A CN107634332 A CN 107634332A CN 201710821128 A CN201710821128 A CN 201710821128A CN 107634332 A CN107634332 A CN 107634332A
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- slow
- array antenna
- rectangular
- microstrip array
- medium substrate
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Abstract
The invention discloses a kind of element microstrip array antenna for reducing coupling, including medium substrate, slow-wave structure and feed are coaxial；Feed coaxial outer signal source, two rectangular radiation elements transferred signals to by the inner wire in feeding coaxially on medium substrate, two rectangular radiation elements radiate to surrounding space, the electromagnetic wave propagation path extended again by slow-wave structure between two rectangular radiation elements, increase radiation, so as to reduce the coupling between element microstrip array antenna；Compared with prior art, the present invention is simpler with structure, and uncoupling effect is more preferable, and can realize the effect realized in wider frequency band range and reduce coupling.
Description
Technical field
The invention belongs to microstrip antenna technical field, more specifically, is related to a kind of element microstrip battle array for reducing coupling
Array antenna.
Background technology
Antenna is as a kind of required energy conversion devices for receiving and radiating directional electromagnetic, answering in modern communicationses
With more and more extensive.However, individual antenna can not generally meet the technical requirements such as high-gain, Sidelobe, high power, this just needs
In actual applications, array antenna is introduced to realize these characteristics.Therefore, in High Data Rate and the band of the demand of high power system capacity
Under dynamic, aerial array starts to be widely used in various communication systems.However, with antenna diversity, ultra wide band array, phased
Battle array, smart antenna, MIMO (Multiple Input multiple Output) system, GPS (Global Position
The it is proposed of multiple antennas application such as System), the strong coupling between antenna element, also thus as multiaerial system application
One bottleneck.
For example for phased array antenna, mutual coupling can cause the input impedance of array element in an array different with excitation impedance, shadow
Ring unit efficiencies so that gain declines, and mismatch, polarization characteristic degenerates, and has a strong impact on the radiance of phased array antenna.Together
When controlled for multi-beam, the application in terms of smart antenna such as DOA (Direction Of Arrival) estimations, the presence of mutual coupling
The deviation of system is will also result in, influences the performance of system.Therefore, the consideration for mutual coupling and minimizing technology are in antenna array
Vital effect is played in the design of row.
Due to have the advantages that thin profile, small volume, it is in light weight, cheap, be easy to integrated, microstrip antenna and its array
It has been widely used in various radio communications and radar system.But when microstrip antenna and its array work, can be in base
Surface wave is encouraged in bottom, this causes the mutual coupling between array element to increase, and antenna and its array gain reduce.
In view of the above-mentioned problems, the method for existing uncoupling has loading electromagnetic bandgap structure (EBG), lacks earth subsidence structure
(DGS) parasitic element etc. and is between antennas loaded, but some methods need multilayer dielectricity substrate, cause structure excessively multiple
It is miscellaneous, some methods can only in narrower frequency band range uncoupling effect, be not very applicable for all channel antenna array.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of element microstrip array day for reducing coupling
Line, by loading slow-wave structure come uncoupling, it is not only simple in structure, it is easily conformal, but also can be in wider frequency band range
Realize the effect of uncoupling.
For achieving the above object, a kind of element microstrip array antenna for reducing coupling of the present invention, it is characterised in that bag
Include：
One medium substrate, the upper surface of the medium substrate are printed with two rectangular radiation elements, and two radiating elements close
Symmetrically placed in the center line of the long side of medium substrate, its lower surface is metal floor；
A rectangular channel is longitudinally opened in the middle of the metal floor, and the length of rectangular channel and the width of medium substrate are equal,
The width of rectangular channel is identical with the distance between two radiating elements；
One slow-wave structure, the appropriate location being carried in rectangular channel, the both ends of slow-wave structure are by microstrip line and metal
Plate connects；
One feed is coaxial, including inner wire and outer conductor；Inner wire is connected with two rectangular radiation elements, outer conductor and gold
Possession plate connection；
Coaxial outer signal source is fed, two rectangular radiation elements, two rectangle spokes are transferred signals to by inner wire
Unit is penetrated to radiate to surrounding space, then the electromagnetic wave propagation road extended by slow-wave structure between two rectangular radiation elements
Footpath, increase radiation, so as to reduce the coupling in element microstrip array antenna.
What the goal of the invention of the present invention was realized in：
A kind of element microstrip array antenna for reducing coupling of the present invention, including medium substrate, slow-wave structure and feed are coaxial；
Coaxial outer signal source is fed, two rectangular radiations transferred signals to by the inner wire in feeding coaxially on medium substrate
Unit, two rectangular radiation elements radiate to surrounding space, then are extended by slow-wave structure between two rectangular radiation elements
Electromagnetic wave propagation path, increases radiation, so as to reduce the coupling between element microstrip array antenna；With prior art phase
Than the present invention is simpler with structure, and uncoupling effect is more preferable, and can realize and drop is realized in wider frequency band range
The effect of lower coupling.
Brief description of the drawings
Fig. 1 be the present invention it is a kind of reduce coupling element microstrip array antenna structure schematic diagram, wherein, (a) be antenna just
Face figure, (b) are antenna reverse side figure.
Fig. 2 is a kind of element microstrip array antenna scale diagrams for reducing coupling of the present invention；Wherein, (a) be antenna just
Face figure, (b) are antenna reverse side figure.
Fig. 3 is the structural representation of several slow-wave structures；
Fig. 4 is the Brillouin diagram of the slow-wave structure in the embodiment of the present invention；
Fig. 5 is the S parameter curve map of the emulation of the embodiment of the present invention.
Description of symbols in figure：Medium substrate 1, metal radiation chip unit 21 and 22, groove 3, the metal opened on metal floor
Floor 4, slow-wave structure 5, microstrip line 61 and 62.
Embodiment
The embodiment of the present invention is described below in conjunction with the accompanying drawings, so as to those skilled in the art preferably
Understand the present invention.Requiring particular attention is that in the following description, when known function and the detailed description of design perhaps
When can desalinate the main contents of the present invention, these descriptions will be ignored herein.
Embodiment
Fig. 1 is a kind of element microstrip array antenna structure schematic diagram for reducing coupling of the present invention.
In the present embodiment, as shown in figure 1, the present invention it is a kind of reduce coupling element microstrip array antenna, including：
As shown in Fig. 1 (a), the upper surface of medium substrate 1 is printed with two rectangular radiation elements 21 and 22, and two radiation are single
Member 21 and 22 is symmetrically placed on the center line of the long side of medium substrate 1, and as shown in Fig. 1 (b), its lower surface is metal floor 4；
In the present embodiment, as shown in Fig. 2 the medium substrate 1 used is FR-4 material, its relative dielectric constant is εr=
4.4, thickness h=1.6mm, its specific geometric parameter values is：The length L=78mm of medium substrate；The width of medium substrate is W
=60mm；As shown in Fig. 2 (a), the length of two rectangular radiation elements 21 and 22 is L1=14mm, width W1=13.2mm；
A rectangular channel 3, the length of rectangular channel 3 and the width phase of medium substrate 1 are longitudinally opened in the middle of metal floor 4
Deng the width of rectangular channel 3 is identical with the distance between two radiating elements 21 and 22；
In the present embodiment, as shown in Fig. 2 (b), the width of rectangular channel 3 is L3=12mm；
Slow-wave structure 5, it is carried in rectangular channel 3, the both ends of slow-wave structure 5 are connected by microstrip line with metal floor 4；
In the present embodiment, as shown in Fig. 2 (b), the distance of the lower end of slow-wave structure 5 apart from the upper end of medium substrate 1 is L4
=25.1mm；The Cycle Length of slow-wave structure is p=2mm；The width of the metal wire of slow-wave structure and the width of microstrip line 61,62
It is identical, it is 0.2mm；
In the present embodiment, slow-wave structure 5 can use rectangular configuration, sinusoidal structure, trapezium structure and U-shaped structure.
Sinusoidal shaped microstrip slow-wave structure shown in Fig. 3 (a), the terraced micro-strip slow-wave structure shown in Fig. 3 (b), the U-shaped micro-strip shown in Fig. 3 (c)
Slow-wave structure, in addition to this it is possible to using the micro-strip slow-wave structure of other shapes, it will not enumerate herein；In addition, slow wave
The size of structure is not limited only to the size provided in embodiment, but is varied from according to the working band of microstrip antenna so that
The passband of slow-wave structure includes the working frequency range of microstrip antenna, and wherein the Brillouin diagram of slow-wave structure is as shown in figure 4, can by Fig. 4
To find out that the passband of the rectangle slow-wave structure includes the working band of element microstrip array antenna.
Feed is coaxial, including inner wire and outer conductor；Inner wire is connected with two rectangular radiation elements, outer conductor and metal
Floor connects；
Coaxial outer signal source is fed, two rectangular radiation elements, two rectangle spokes are transferred signals to by inner wire
Unit is penetrated to radiate to surrounding space, then the electromagnetic wave propagation road extended by slow-wave structure between two rectangular radiation elements
Footpath, increase radiation, so as to reduce the coupling in element microstrip array antenna.
The present embodiment to the S parameter of above-mentioned element microstrip array antenna by emulating, its simulation result such as Fig. 5 institutes
Show, as seen from Figure 5 compared with the element microstrip array antenna for being not loaded with slow-wave structure with size, the present invention is in resonance point
Locate S2120dB can be reduced.
In addition, the present invention is not limited only to element microstrip array antenna, polynary micro-strip array antenna is equally applicable to, equally may be used
To reach the effect for reducing coupling.
Although the illustrative embodiment of the present invention is described above, in order to the technology of the art
Personnel understand the present invention, it should be apparent that the invention is not restricted to the scope of embodiment, to the common skill of the art
For art personnel, if various change in the spirit and scope of the present invention that appended claim limits and determines, these
Change is it will be apparent that all utilize the innovation and creation of present inventive concept in the row of protection.
Claims (4)
- A kind of 1. element microstrip array antenna for reducing coupling, it is characterised in that including：One medium substrate, the upper surface of the medium substrate are printed with two rectangular radiation elements, and two radiating elements are on being situated between The center line of the long side of matter substrate is symmetrically placed, and its lower surface is metal floor；A rectangular channel is longitudinally opened in the middle of the metal floor, and the length of rectangular channel and the width of medium substrate are equal, rectangle The width of groove is identical with the distance between two radiating elements；One slow-wave structure, the appropriate location being carried in rectangular channel, the both ends of slow-wave structure are connected by microstrip line and metal floor Connect；One coaxial feed, including inner wire and outer conductor；Inner wire is connected with two rectangular radiation elements, outer conductor and metal Plate connects；Coaxial feed outer signal source, two rectangular radiation elements, two rectangular radiations are transferred signals to by interior inner wire Unit radiates to surrounding space, then the electromagnetic wave propagation path extended by slow-wave structure between two rectangular radiation elements, Increase radiation, so as to reduce the coupling between element microstrip array antenna.
- A kind of 2. element microstrip array antenna for reducing coupling according to claim 1, it is characterised in that the slow wave knot Distance of the lower end of structure apart from medium substrate upper end is L4。
- A kind of 3. element microstrip array antenna for reducing coupling according to claim 1, it is characterised in that the slow wave knot Structure can use rectangular configuration, sinusoidal structure, trapezium structure and U-shaped structure.
- A kind of 4. element microstrip array antenna for reducing coupling according to claim 1, it is characterised in that the medium base Plate is FR-4 materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710821128.8A CN107634332A (en) | 2017-09-13 | 2017-09-13 | A kind of element microstrip array antenna for reducing coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710821128.8A CN107634332A (en) | 2017-09-13 | 2017-09-13 | A kind of element microstrip array antenna for reducing coupling |
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| Publication Number | Publication Date |
|---|---|
| CN107634332A true CN107634332A (en) | 2018-01-26 |
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| CN201710821128.8A Pending CN107634332A (en) | 2017-09-13 | 2017-09-13 | A kind of element microstrip array antenna for reducing coupling |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400449A (en) * | 2018-03-19 | 2018-08-14 | 重庆大学 | A kind of three array element Microstrip Planar Array Antennas row of high degree of isolation |
| CN110635247A (en) * | 2019-09-29 | 2019-12-31 | 歌尔科技有限公司 | Antenna and wearable electronic product |
| CN111969312A (en) * | 2020-08-14 | 2020-11-20 | 中国人民解放军空军工程大学 | Antenna array |
| CN116683202A (en) * | 2023-07-21 | 2023-09-01 | 广东博纬通信科技有限公司 | Multi-beam array antenna |
Citations (5)
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| CN1572045A (en) * | 2001-08-31 | 2005-01-26 | 纽约市哥伦比亚大学托管会 | Systems and methods for providing optimized patch antenna excitation for mutually coupled patches |
| CN102280696A (en) * | 2011-04-28 | 2011-12-14 | 上海交通大学 | Half-wave transmission decoupling small-space microstrip array antenna |
| CN102280695A (en) * | 2011-04-28 | 2011-12-14 | 上海交通大学 | Microstrip array antenna with low coupling and small spacing |
| US20130043394A1 (en) * | 2011-08-17 | 2013-02-21 | United States Of America As Represented By The Administrator Of The National Aeronautics And Spac | Apparatus for ultrasensitive long-wave imaging cameras |
| CN106207453A (en) * | 2016-06-28 | 2016-12-07 | 哈尔滨工程大学 | A kind of defect ground decoupling arrangements for micro-strip array antenna |
-
2017
- 2017-09-13 CN CN201710821128.8A patent/CN107634332A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572045A (en) * | 2001-08-31 | 2005-01-26 | 纽约市哥伦比亚大学托管会 | Systems and methods for providing optimized patch antenna excitation for mutually coupled patches |
| CN102280696A (en) * | 2011-04-28 | 2011-12-14 | 上海交通大学 | Half-wave transmission decoupling small-space microstrip array antenna |
| CN102280695A (en) * | 2011-04-28 | 2011-12-14 | 上海交通大学 | Microstrip array antenna with low coupling and small spacing |
| US20130043394A1 (en) * | 2011-08-17 | 2013-02-21 | United States Of America As Represented By The Administrator Of The National Aeronautics And Spac | Apparatus for ultrasensitive long-wave imaging cameras |
| CN106207453A (en) * | 2016-06-28 | 2016-12-07 | 哈尔滨工程大学 | A kind of defect ground decoupling arrangements for micro-strip array antenna |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400449A (en) * | 2018-03-19 | 2018-08-14 | 重庆大学 | A kind of three array element Microstrip Planar Array Antennas row of high degree of isolation |
| CN110635247A (en) * | 2019-09-29 | 2019-12-31 | 歌尔科技有限公司 | Antenna and wearable electronic product |
| CN111969312A (en) * | 2020-08-14 | 2020-11-20 | 中国人民解放军空军工程大学 | Antenna array |
| CN116683202A (en) * | 2023-07-21 | 2023-09-01 | 广东博纬通信科技有限公司 | Multi-beam array antenna |
| CN116683202B (en) * | 2023-07-21 | 2024-05-14 | 广东博纬通信科技有限公司 | Multi-beam array antenna |
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