CN206850019U - A kind of DGS structure microstrip antennas for reducing coupling - Google Patents
A kind of DGS structure microstrip antennas for reducing coupling Download PDFInfo
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- CN206850019U CN206850019U CN201720621861.0U CN201720621861U CN206850019U CN 206850019 U CN206850019 U CN 206850019U CN 201720621861 U CN201720621861 U CN 201720621861U CN 206850019 U CN206850019 U CN 206850019U
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- dgs
- antenna
- microstrip antennas
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- structures
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Abstract
A kind of new DGS structures microstrip antenna for reducing and being coupled between bay is the utility model is related to, the antenna is using a kind of new defect（DGS）Structure significantly inhibits the coupling between micro-strip array antenna array element, by by a kind of unit cascaded demands for realizing DGS space structures of simple and compact type, realizing antenna miniaturization of five identical DGS.The symmetrical paster antenna in both sides uses coaxial feed technology, ensures that antenna has good impedance matching and bandwidth.The utility model realizes the coupling reduced between bay by a kind of new DGS structures well, while passes through the unit cascaded sizes for also reducing micro-strip array antenna accordingly of DGS.
Description
Technical field
The utility model, which devises, a kind of reduces the defects of coupling between bay ground structure microstrip antenna, particularly one kind
The defects of new ground structure design, the antenna belongs to the Antenna Design of mobile communication and Internet technical field, in microwave millimeter
Ripple integrated circuit fields have good application prospect.
Background technology
In recent years, with the development of the communication technology and Internet technology, microstrip antenna because its making is simple, compact-sized,
Cost is low to wait outstanding advantages, extensively should have in terms of radar system, navigation system, satellite communication system, REID
With.But due to the mutual coupling between array element so that the CURRENT DISTRIBUTION of battle array deviates estimated situation, causes the radiation efficiency of antenna to reduce etc. and asks
Topic, influence the performance of antenna.So the mutual coupling between array element suppresses particularly important.
Coupled between reduction microstrip antenna element, it is necessary to reduce the interference of surface wave and space wave.Deposit in the prior art
The method coupled between much reduction microstrip antenna elements：Electromagnetic bandgap structure is such as used, but borehole is more difficult on dielectric-slab, system
Bother, and it is ineffective with hindering；In general DGS structures, there is good bandgap structure and slow wave characteristic, and make simply, just
In integrated, but it is difficult effectively to be arranged between aerial array that in general DGS structures are limited by its size and structure, it is impossible to full
The demand of sufficient antenna miniaturization.
The content of the invention
Main purpose of the present utility model is to provide a kind of DGS of mutual coupling and simple and compact between can reducing bay
Structure microstrip antenna.
The utility model provides a kind of design method that can reduce and be coupled between bay, linear so as to improve day
The problem of can not being taken into account with miniaturization.
To achieve these goals, devise it is a kind of reduce the defects of coupling between array element ground structure microstrip antenna, including：It is situated between
Matter substrate, earth plate, radiant body and the part of defect ground structure four, it is characterised in that：In the upper surface of medium substrate by left and right two
Individual axisymmetric rectangular patch is formed；Five etched in the lower surface of medium substrate by earth plate and on earth plate are identical
DGS cascade structures composition, realize a kind of DGS structures of simple and compact, reduce micro-strip array antenna size；Both sides are symmetrical
Paster antenna uses coaxial feed technology, realizes good impedance matching.
The technical solution of the utility model, after the antenna on earth plate by loading new GDS structures, change ground connection
The distribution of electric current on plate, by compared with conventional microstrip array antenna, current density reduces, the propagation of earth plate upper surface ripple by
To suppression, reduce between bay along the coupling in E faces direction.Therefore the utility model can effectively suppress antenna surface ripple
Propagation, suppress bay between mutual coupling.
Brief description of the drawings
Fig. 1 shows the model schematic of microstrip antenna.
Fig. 2 shows the return loss and insertion loss schematic diagram of no defect ground structure microstrip antenna.
Fig. 3 shows the defectively return loss of structure microstrip antenna and insertion loss schematic diagram.
Accompanying drawing gives the following drawings mark in figure：1 radiation patch；2 coaxial line internal diameters；3. coaxial line external diameter；4. cascade DGS
Construction unit；5. medium substrate；6. radiate border.
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 should be understood that instantiation described herein
Only to explain the utility model, it is not used to limit the utility model.
As shown in figure 1, the radiating element of new DGS structures microstrip antenna is made up of two identical rectangular patches, and
Two radiating elements are symmetrical modes, and two antenna radiation units are similar, and at a distance of the position of half wavelength.
Two pieces of pasters use coaxial feeding mode, and lower section is connected by disc port with earth plate, ensure that the symmetry of antenna,
Be advantageous to the radiation of electromagnetic field.
The DGS structures of five identical cascades are etched on earth plate, had both made compact arrangement between aerial array, and had met antenna
The requirement of miniaturization, change the distribution of earth plate electric current again, reduce the coupling between bay.
By comparing Fig. 2 and Fig. 3, it can be seen that when not loading DGS microstrip antennas, the coupling between antenna array element is-
17.6dB, after loading DGS, the coupling between antenna array element falls below -56.4 dB, reduces 38.8dB, it will be apparent that suppresses
Surface wave between array element, reduces coupling, so the design of the utility model is effective.
Claims (4)
1. the DGS structure microstrip antennas coupled between a kind of reduction array element, including medium substrate, earth plate, radiant body and defect
The part of structure four, it is characterised in that：It is made up of in the upper surface of medium substrate the axisymmetric rectangular patch in left and right two；In medium
Five identical GDS cascade structures that the lower surface of substrate etches by earth plate and on earth plate form, and realize a kind of letter
Single compact DGS structures, reduce micro-strip array antenna size；The symmetrical paster antenna in both sides uses coaxial feed technology,
Realize good impedance matching.
2. the DGS structure microstrip antennas coupled between a kind of reduction bay according to claim 1, it is characterised in that：
By designing the defects of a kind of new ground structure, the return loss and insertion loss of conventional microstrip antenna are reduced, reduces day
Coupling between linear array member.
3. the DGS structure microstrip antennas coupled between a kind of reduction bay according to claim 1, it is characterised in that：
The radiating element of both sides uses symmetrical structure.
4. the DGS structure microstrip antennas coupled between a kind of reduction bay according to claim 1, it is characterised in that：
The radiating element of both sides uses coaxial feed mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720621861.0U CN206850019U (en) | 2017-06-01 | 2017-06-01 | A kind of DGS structure microstrip antennas for reducing coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720621861.0U CN206850019U (en) | 2017-06-01 | 2017-06-01 | A kind of DGS structure microstrip antennas for reducing coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206850019U true CN206850019U (en) | 2018-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720621861.0U Expired - Fee Related CN206850019U (en) | 2017-06-01 | 2017-06-01 | A kind of DGS structure microstrip antennas for reducing coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206850019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281788A (en) * | 2018-01-22 | 2018-07-13 | 电子科技大学 | A kind of element microstrip array antenna reducing coupling |
| CN109768396A (en) * | 2018-10-09 | 2019-05-17 | 北京航空航天大学 | A kind of microstrip antenna composite structure with coupling inhibiting effect |
-
2017
- 2017-06-01 CN CN201720621861.0U patent/CN206850019U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281788A (en) * | 2018-01-22 | 2018-07-13 | 电子科技大学 | A kind of element microstrip array antenna reducing coupling |
| CN109768396A (en) * | 2018-10-09 | 2019-05-17 | 北京航空航天大学 | A kind of microstrip antenna composite structure with coupling inhibiting effect |
| CN109768396B (en) * | 2018-10-09 | 2021-01-05 | 北京航空航天大学 | Microstrip antenna composite structure with coupling inhibiting effect |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20180601 |
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| CF01 | Termination of patent right due to non-payment of annual fee |