CN106207453B - A kind of defect for micro-strip array antenna ground decoupling arrangements - Google Patents
A kind of defect for micro-strip array antenna ground decoupling arrangements Download PDFInfo
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- CN106207453B CN106207453B CN201610487699.8A CN201610487699A CN106207453B CN 106207453 B CN106207453 B CN 106207453B CN 201610487699 A CN201610487699 A CN 201610487699A CN 106207453 B CN106207453 B CN 106207453B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/005—Patch antenna using one or more coplanar parasitic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
Abstract
A kind of present invention defect for micro-strip array antenna is provided decoupling arrangements, there are two micro-strip array antenna array elements for setting on common ground plate, fluted structure is designed on common ground plate between two micro-strip array antenna array elements, each micro-strip array antenna array element includes medium substrate and the rectangular radiation patch and coaxial feed that medium substrate upper surface is arranged in, the coaxial feed of each micro-strip array antenna array element is connect while connection with rectangular radiation patch with SMA inner conductor, SMA outer conductor is connect with common ground plate, the groove structure includes two groups of pectination defect ground structures relatively arranged in a crossed manner, every group of pectination defect ground structure includes comb handle unit and comb unit, comb teeth number poor 1 of the comb teeth number of first group of comb unit and second group of comb unit.The present invention improves the isolation between array antenna not only by the coupling energy absorption between antenna, meets the needs of array antenna, and has the advantages that design is simple, easy to process.
Description
Technical field
A kind of a kind of the present invention relates to decoupling arrangements more particularly to defect for micro-strip array antenna decoupling arrangements.
Background technique
Array antenna is widely used in radio communication field because of its high-gain and highly directive, with device integration
Raising, the miniaturization of array antenna also obtained quick development.But the research of array antenna is all mutual by array element always
The restriction of the bottlenecks such as coupling, the generation of surface current materially increases the degree of coupling between bay, serious to dislike
The characteristic of array antenna is changed.Therefore, how miniaturization mobile terminal device in be laid out multiple antenna and realize each antenna it
Between work independently, irrelevant performance become array antenna research key place.It can be seen that array antenna it is high every
It is of great significance from research for current and future communications industry development.
In recent years, more and more to the method for micro-strip array antenna uncoupling, if H.S.Farahani et al. was in 2010
It is proposed it is a kind of small-sized electromagnetic bandgap structure is added between micro-strip array antenna array element, microstrip antenna can be made to exist through this structure
Isolation increases by more than ten dB in resonance frequency, greatly improves the performance of array antenna.S.Farsi et al. was mentioned in 2012
A kind of simple micro-strip U-shaped structure out can be absorbed between microstrip antenna by loading this element between array antenna array element
It couples to increase higher isolation between antenna, but because the load of U-shaped unit, the radiation characteristic of antenna can be disturbed, day
It can linearly have a certain impact.R.Hafezifard et al. proposed one kind in 2016 for reducing micro-strip array antenna
Between the metamaterial structure that couples can make antenna in resonance frequency by the way that this structure to be placed between microstrip antenna element
Isolation improve nearly 20dB, substantially improve the performance of micro-strip array antenna.But unquestionable both the above electro-magnetic bandgap
There is more complex structure with metamaterial unit, have and very high design and manufacture cost.And defect ground structure is in terms of uncoupling
There is good effect, defect ground structure is cutting cycle or aperiodic groove on the ground level of transmission line, to increase
Add the equivalent capacity and equivalent inductance of microstrip transmission line, to change current distribution so that improving the performance of transmission line.Pass through
The etching defect ground structure on common ground plate reduces the coupling between array antenna, and then improves isolation between antennae, makes battle array
Array antenna system reaches better using effect.
Summary of the invention
It is coupled between array antenna the purpose of the invention is to reduce while improving the target of isolation and a kind of use is provided
In the defect ground decoupling arrangements of micro-strip array antenna battle array.
The object of the present invention is achieved like this: the micro-strip array antenna array element there are two settings on common ground plate, and two
Fluted structure is designed on common ground plate between a micro-strip array antenna array element, each micro-strip array antenna array element includes being situated between
Matter substrate and the rectangular radiation patch and coaxial feed that medium substrate upper surface is set, each micro-strip array antenna array element it is same
Axis feed is connect while connection with rectangular radiation patch with SMA inner conductor, and SMA outer conductor is connect with common ground plate, described
Groove structure includes two groups of pectination defect ground structures relatively arranged in a crossed manner, every group of pectination defect ground structure include comb handle unit and
Comb teeth number poor 1 of comb unit, the comb teeth number of first group of comb unit and second group of comb unit.
The invention also includes structure features some in this way:
1. the distance between each comb teeth in comb unit is equal, and the width of the width of comb teeth and comb handle unit be can
It adjusts.
Compared with prior art, the beneficial effects of the present invention are: the present invention reduces microstrip array day using defect ground structure
The effect of intercoupling between linear array member, to improve the isolation of array antenna.Namely using defect method decouples the present invention
It closes, mainly by carving the comb shape groove defect ground structure of a pair of cross on array antenna common ground plate, reduces array antenna
Between the effect of intercoupling, reach higher isolation.The ground of intersection comb shape defect designed by present invention decoupling structure, not only
By the coupling energy absorption between antenna, and the isolation between array antenna is improved, meets the needs of array antenna, and have
It designs simple, compact-sized, the novel line of rabbet joint is etched on common ground plate, have easy to process, low-cost
Advantage.Two interdigitated defect ground structures that the present invention is arranged change the exciting current that feed line is coupled to patch, effectively
Ground reduces antenna side lobe level, while absorbing the coupling energy between two antenna elements to reach lower coupling and high isolation
The effect of degree, while will not influence two antenna element radiation characteristics, make it have good radiation characteristic.Using coaxial feed side
Formula feeds two antenna elements, makes antenna convenient for Integrated design.Present invention only requires the comb teeth by adjusting comb unit
The parameters such as width, the width of comb handle unit, comb interdental space can realize the uncoupling effect of different resonance frequencies, be greatly saved
Optimize the time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of overlook direction of the invention；
Fig. 2 is the structural schematic diagram of main view direction of the invention；
Fig. 3 is the structure chart of groove structure namely intersection comb shape defect ground of the invention；
Fig. 4 is analogous diagram of the invention.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.
Embodiment one: in conjunction with Fig. 1 to Fig. 3, the present invention includes being formed in medium substrate lower surface common ground plate 101, on
Surface rectangle radiation patch 201 and 202, two coaxial feeds 301 and 302 are provided with groove structure on common ground plate 101,
Groove structure includes top comb handle unit 1011, the comb unit 1012 of top four, lower section comb handle unit 1013 and lower section comb teeth
Unit 1014, and each unit be etching on common ground plate, for reduce the coupling between microstrip antenna array simultaneously raising every
From degree.The comb teeth and 1014 comb teeth of lower section comb unit of top comb unit 1012 cross one another, and constitute and intersect decoupling structure.
Rectangular radiation patch 201 and 202 is corresponding to the center line for being symmetrical with medium substrate on Rectangular Enclosure with Participating Media substrate.Two coaxial feeds
301 and 302 are connect with rectangular radiation patch 201,202 and SMA inner conductor respectively by feeding transmission line.Specifically two
Coaxial feed 301 is connected with 302 by transmission line, connect two rectangular radiation patch 201 and 202 with SMA inner conductor simultaneously,
SMA outer conductor is connect with common ground plate 101.
Embodiment two: based on the above embodiment, the distance between each comb teeth of comb unit of the invention is equal.According to
Defect ground correlation theory, the cellular construction that design, which meets, to be reduced coupling, improve isolation, is radiated, and comb teeth using top-bottom cross
Between be equidistant, upper and lower comb handle unit is symmetrical about center of antenna, convenient for designing and manufacturing.Specific size are as follows: top comb handle list
The length and width of comb teeth of member 1101 can be designed according to its uncoupling frequency, the length and width of the comb teeth of top comb unit 1102 with
Top comb handle unit cooperates, and to realize uncoupling purpose, the length and width of comb teeth and upper and lower comb interdental space can be adjusted
It is whole to meet necessary requirement, intersecting comb shape defect ground structure can be set apart from medium substrate edge according to Practical Project demand
Meter, to meet fixed and antenna uncoupling demand.By intersecting the adjustment of comb shape defect ground structure, regulation comb tooth width, comb handle
Width, the parameters such as comb interdental space realize the uncoupling effect of different resonance frequencies.
Embodiment three: based on the above embodiment, further, medium substrate 401 of the invention is that dielectric constant is 4.4
FR4 medium, to reduce design cost, the size of medium substrate is designed using miniaturization technology namely the length of medium substrate 401
It is designed with width according to Miniaturized Microstrip Antennas principle.Metal ground plate 101 under medium substrate uses copper product.Medium
Upper surface of base plate rectangular radiation patch 201 and 202 uses copper product.
A kind of micro-strip array antenna based on defect decoupled of the invention, using defect realizes uncoupling, as long as choosing
It selects suitably sized, can substantially reduce and couple between antenna, while improve isolation.As shown in figure 4, one kind of the invention is based on
The micro-strip array antenna decoupled to defect selects reasonable size, so that the isolation between antenna array improves nearly 30dB.
Claims (1)
1. a kind of defect for micro-strip array antenna ground decoupling arrangements, it is characterised in that: be provided with two on common ground plate
A micro-strip array antenna array element designs fluted structure on the common ground plate between two micro-strip array antenna array elements, each
Micro-strip array antenna array element includes medium substrate and the rectangular radiation patch and coaxial feed that medium substrate upper surface is arranged in, often
The coaxial feed of a micro-strip array antenna array element is connect while connection with rectangular radiation patch with SMA inner conductor, SMA outer conductor
It is connect with common ground plate, the groove structure includes two groups of pectination defect ground structures relatively arranged in a crossed manner, and every group of pectination lacks
Sunken ground structure includes comb handle unit and comb unit, the comb teeth number and the comb teeth of second group of comb unit of first group of comb unit
Number poor 1；The distance between each comb teeth in comb unit is equal, and the width of the width of comb teeth and comb handle unit be can
It adjusts；Two comb handle units are symmetrical about center of antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610487699.8A CN106207453B (en) | 2016-06-28 | 2016-06-28 | A kind of defect for micro-strip array antenna ground decoupling arrangements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610487699.8A CN106207453B (en) | 2016-06-28 | 2016-06-28 | A kind of defect for micro-strip array antenna ground decoupling arrangements |
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| CN106207453A CN106207453A (en) | 2016-12-07 |
| CN106207453B true CN106207453B (en) | 2019-09-27 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106532248B (en) * | 2016-12-09 | 2023-03-31 | 桂林电子科技大学 | Ultra-compact microstrip patch array antenna |
| CN106785423B (en) * | 2017-01-09 | 2023-09-01 | 成都信息工程大学 | 5G Communication High Isolation Omnidirectional Array Antenna |
| CN107240770B (en) * | 2017-05-10 | 2019-11-26 | 哈尔滨工程大学 | A kind of periodic spatial wave resistance gear decoupling arrangements for micro-strip antenna array |
| US10770780B2 (en) * | 2017-08-10 | 2020-09-08 | Microelectronics Technology, Inc. | Antenna apparatus and circuit board thereof |
| CN107634332A (en) * | 2017-09-13 | 2018-01-26 | 电子科技大学 | A kind of element microstrip array antenna for reducing coupling |
| CN109164608B (en) * | 2018-09-25 | 2022-02-25 | 京东方科技集团股份有限公司 | Phase shifter, antenna, and phase shifter control method |
| CN111129677B (en) * | 2018-10-31 | 2022-10-28 | 康普技术有限责任公司 | Isolator for antenna system and related antenna system |
| CN109509974A (en) * | 2018-12-22 | 2019-03-22 | 昆山恩电开通信设备有限公司 | A kind of ultralow section high-performance dual-polarization radiation unit |
| CN110176671A (en) * | 2019-05-20 | 2019-08-27 | 深圳市信维通信股份有限公司 | A kind of millimeter wave array antenna |
| CN110911827B (en) * | 2019-10-18 | 2022-03-29 | 东南大学 | Broadband integrated balun and antenna unit |
| CN111987458B (en) * | 2020-07-30 | 2021-09-28 | 南京理工大学 | Decoupling structure between adjacent rectangular patches in dual-frequency antenna array |
| CN111969312B (en) * | 2020-08-14 | 2022-10-28 | 中国人民解放军空军工程大学 | Antenna array |
| CN112510367B (en) * | 2020-10-19 | 2023-05-30 | 西安朗普达通信科技有限公司 | Resonant decoupling chip |
| CN112421231A (en) * | 2020-10-23 | 2021-02-26 | 普联国际有限公司 | High-isolation antenna |
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| US20110183624A1 (en) * | 2010-01-28 | 2011-07-28 | Thiagarajar College Of Engineering | Devices and Methods for Phase Shifting a Radio Frequency (RF) Signal for a Base Station Antenna |
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| CN106207453A (en) | 2016-12-07 |
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