CN206992315U - A kind of lower coupling microstrip antenna array based on defect ground structure - Google Patents
A kind of lower coupling microstrip antenna array based on defect ground structure Download PDFInfo
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- CN206992315U CN206992315U CN201720844914.5U CN201720844914U CN206992315U CN 206992315 U CN206992315 U CN 206992315U CN 201720844914 U CN201720844914 U CN 201720844914U CN 206992315 U CN206992315 U CN 206992315U
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- ground structure
- defect ground
- antenna array
- microstrip antenna
- array based
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Abstract
The utility model discloses a kind of lower coupling microstrip antenna array based on defect ground structure, belong to Antenna Design field.The antenna includes medium substrate, earth plate, radiation patch and defect ground structure, and the defect ground structure is a dumb-bell slot：The upper and lower ends of dumb-bell slot are two congruent rectangles, and two congruent rectangles are connected by the structure of an elbow.The radiation patch includes two rectangular patches, and two rectangular patches edges are symmetrical along medium substrate center line.The defect ground structure is etched on earth plate, and the number of defect ground structure is one or more.The utility model proposes a kind of defect ground structure to reduce the mutual coupling effect between bay.The defect ground structure is simple, is compact, easy to realize, simulation result shows near resonant frequency 5.0GHZ, and the isolation of antenna increases 31dB, restrained effectively the coupling between bay.
Description
Technical field
It the utility model is related to antenna design techniques field, more particularly to a kind of lower coupling micro-strip based on defect ground structure
Antenna array.
Background technology
In recent years, wireless communication technology develop rapidly, microstrip antenna with light weight, small volume, be easy to make the advantages that,
Satellite communication system, navigation system, radar system and biomedical sector are widely used.Do not limited in space
Terminal on be easily installed multiple antennas.However, the platform of mobile device is very limited, it is difficult to be disposed on a platform simultaneously
Multiple antennas.When the distance between bay reduces, surface wave coupling is occupied an leading position, and results in the mutual coupling between bay
Effect strengthens, so as to influence systematic function.
In order to solve the influence of mutual coupling effect between bay, domestic and international researcher proposes the method much decoupled.Go
Coupling can be by changing shape, array structure, the number of array element and the array modes of emplacement of antenna element come real；Also may be used
To add twelve Earthly Branches structure between two antenna elements, but this method and do not have versatility, be suitable only for the antenna of a certain type
Design；In electric current and the method for technology decoupling can effectively reduce mutual coupling between antenna, but select position and the chi of folding line
It is very little to control the size for winning electric current extremely difficult；Also someone uses electro-magnetic bandgap（EBG）Structure, the structure hollow out in media as well
Relative difficulty, trouble is made, and band gap properties is ineffective, compared with EBG, defect（DGS）Structure fabrication is simple, is easy to
Integrate and there are more preferable band gap properties.
The content of the invention
Given this, it is micro- to be to provide a kind of lower coupling based on defect ground structure for technical problem to be solved in the utility model
Band antenna array, to increase isolation, reduce the mutual coupling between antenna.
The purpose of this utility model is achieved through the following technical solutions：A kind of lower coupling based on defect ground structure is micro-
Band antenna array, including medium substrate, earth plate, radiation patch and defect ground structure, earth plate is in medium substrate lower rear.Institute
It is a dumb-bell slot to state defect ground structure：The upper and lower ends of dumb-bell slot are two congruent rectangles, two congruent rectangles
Connected by the structure of an elbow；The radiation patch includes two rectangular patches.
Further, the number of the defect ground structure be one or more than one.
Further, the radiation patch is symmetrical along medium substrate center line.
Further, the length L of described two rectangular patches is 15.26mm, and width W is 14.63mm.
Further, spacing m=15mm of described two rectangular patches.
Further, the radiation patch uses coaxial feed mode, and distributing point biases.
The utility model proposes a kind of defect ground structure to reduce the mutual coupling effect between bay.The defect ground structure
Simply, it is compact, easy to realize, simulation result shows near resonant frequency 5.0GHZ, and the isolation of antenna increases 30dB, has
Inhibit to effect the coupling between bay.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing to this practicality
It is new to be described in further detail, wherein:Fig. 1 is a kind of lower coupling microstrip antenna based on defect ground structure of the utility model
The overall structure diagram of battle array.
Fig. 2 is the schematic diagram without isolation between antennas S12 when adding defect ground structure.
Fig. 3 is the schematic diagram of isolation between antennas S12 when adding defect ground structure.
Wherein：1- medium substrates；2- rectangular patches；3- defect ground structures；4- distributing points.
Embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect are more clearly understood, with
Under in conjunction with the accompanying drawings and embodiments, the utility model is further described in detail.It is it should be understood that described herein specific
Example only to explain the utility model, is not used to limit the utility model.
Fig. 1 is a kind of lower coupling microstrip antenna array based on defect ground structure of utility model, as illustrated, radiation patch bag
Two rectangular patches 2 are included, two rectangular patches 2 are symmetrical along the center line of medium substrate 1, and the length L of two rectangular patches 2 is equal
For 15.26mm, width W is 14.63mm, and spacing m=15mm of two rectangular patches 2.Radiation patch uses coaxial feed side
Formula, and distributing point 4 biases.
Defect ground structure 3 is a dumb-bell slot：The upper and lower ends of dumb-bell slot are two congruent rectangles, two congruences
Rectangle connected by the structure of elbow；Defect ground structure 3 is etched on floor, the number of defect ground structure 3 for one or
Person more than one, in the utility model, three identical dumb-bell slot defects are etched on the earth plate of microstrip antenna array
Structure, spacing g=2mm of dumb-bell slot.
Compare Fig. 2 and Fig. 3, it can be seen that add defect ground structure and be not added with defect ground structure, isolation between antennas S12 numerical value
Widely different, when being not added with defect ground structure, S12 values are -18dB, and when adding defect ground structure, S12 values are -49dB, it can be seen that
Near resonant frequency 5.0GHZ, the isolation angle value of antenna increases 31dB.It can thus be seen that the defects of the utility model tie
Structure has obvious decoupling effect, and this microstrip antenna array has the relatively low degree of coupling.
Claims (6)
1. a kind of lower coupling microstrip antenna array based on defect ground structure, including medium substrate, earth plate, radiation patch and defect
Ground structure, earth plate is in medium substrate lower rear, it is characterised in that：The defect ground structure is a dumb-bell slot：Dumbbell
The upper and lower ends of shape groove are two congruent rectangles, and two congruent rectangles are connected by the structure of an elbow；The radiation patch
Piece includes two rectangular patches.
A kind of 2. lower coupling microstrip antenna array based on defect ground structure according to claim 1, it is characterised in that：It is described
The number of defect ground structure be one or more than one.
A kind of 3. lower coupling microstrip antenna array based on defect ground structure according to claim 1, it is characterised in that：It is described
Radiation patch is symmetrical along medium substrate center line.
A kind of 4. lower coupling microstrip antenna array based on defect ground structure according to claim 1, it is characterised in that：It is described
The length L of two rectangular patches is 15.26mm, and width W is 14.63mm.
A kind of 5. lower coupling microstrip antenna array based on defect ground structure according to claim 1, it is characterised in that：It is described
Spacing m=15mm of two rectangular patches.
A kind of 6. lower coupling microstrip antenna array based on defect ground structure according to claim 1, it is characterised in that：It is described
Radiation patch uses coaxial feed mode, and distributing point biases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720844914.5U CN206992315U (en) | 2017-07-13 | 2017-07-13 | A kind of lower coupling microstrip antenna array based on defect ground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720844914.5U CN206992315U (en) | 2017-07-13 | 2017-07-13 | A kind of lower coupling microstrip antenna array based on defect ground structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206992315U true CN206992315U (en) | 2018-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720844914.5U Expired - Fee Related CN206992315U (en) | 2017-07-13 | 2017-07-13 | A kind of lower coupling microstrip antenna array based on defect ground structure |
Country Status (1)
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| CN (1) | CN206992315U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165408A (en) * | 2019-05-10 | 2019-08-23 | 中国工程物理研究院电子工程研究所 | A kind of high-isolation Beidou array antenna based on electromagnetism Meta Materials |
| CN110190383A (en) * | 2019-06-17 | 2019-08-30 | 中天宽带技术有限公司 | A kind of multifrequency antenna for base station with defect ground structure |
-
2017
- 2017-07-13 CN CN201720844914.5U patent/CN206992315U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165408A (en) * | 2019-05-10 | 2019-08-23 | 中国工程物理研究院电子工程研究所 | A kind of high-isolation Beidou array antenna based on electromagnetism Meta Materials |
| CN110190383A (en) * | 2019-06-17 | 2019-08-30 | 中天宽带技术有限公司 | A kind of multifrequency antenna for base station with defect ground structure |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20180713 |