CN107645067A - A kind of micro-strip array antenna - Google Patents
A kind of micro-strip array antenna Download PDFInfo
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- CN107645067A CN107645067A CN201710776113.4A CN201710776113A CN107645067A CN 107645067 A CN107645067 A CN 107645067A CN 201710776113 A CN201710776113 A CN 201710776113A CN 107645067 A CN107645067 A CN 107645067A
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- power splitter
- micro
- junction power
- medium substrate
- array antenna
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Abstract
The invention discloses a kind of micro-strip array antenna, including medium substrate and eight groups of radiating elements being arranged on medium substrate, every group of radiating element includes the sub- radiating element of two similar frequency bands, and 16 sub- radiating elements arrange in the same direction on medium substrate according to 4 × 4；Whole feeding network is connected by cascade system, ensures 16 deciles.The present invention changes the design of feeding network, while improving antenna gain, solves the problems such as beam deviation caused by when using single T junction power splitter, antenna overall space wastes well.
Description
Technical field
The present invention relates to microstrip antenna technology, particularly a kind of micro-strip array antenna.
Background technology
Microstrip antenna is a kind of antenna most popular in recent years, compared with traditional antenna, has many can not be substituted
The advantages of.Its small volume, it is in light weight, there is planar structure, thus easily combine to form conformal knot with carriers such as guided missile, satellites
Structure.Moreover, microstrip antenna also has the characteristics of compact-sized, stable performance, and it is large quantities of to be widely used in printed circuit technique
Amount production, and it is easy to implement the various functions such as two-band, dual polarization.But microstrip antenna similarly have frequency band it is narrow, loss
Greatly, the shortcomings of power capacity is small, thus in practical application with a definite limitation is received, in order to overcome these shortcomings, typically now
Microstrip antenna is formed into microstrip antenna array by certain way, antenna gain, bandwidth is improved, realizes some directionality specified
It is required that increase the application of microstrip antenna.
With the development of high power microwave radiation technology, requirement for high power radiation antenna also more and more higher.Gao Gong
Rate radial arrays antenna is a kind of Novel high-power microwave antenna proposed in recent years, by the way that multiple submatrixs are combined
High gain array antenna is obtained, correlative study person has also carried out numerous studies to it.But before realizing above-mentioned high-gain aerial
It is that the power output of high-power microwave source is distributed into multichannel to carry, and each submatrix is fed, therefore designs a kind of Gao Gong
Rate, low-loss, the high power power splitter of achievable high power multiple-channel output are just very necessary.Due to array antenna generally use etc.
Path feeding classification, thus certainly exist power splitter output port and each submatrix output port etc. path connectivity problem,
A complex cascade structure is needed to solve this problem, it is tight so as to influence the radiation efficiency of whole antenna system and structure
Gathering property.T junction power splitter has the function of one-to-two, can realize that the phase such as constant amplitude multichannel is distributed by multi-stage cascade.But work as
Overall structure is excessively loose, and when transmission path is longer, its insertion loss is relatively bigger than normal.
The content of the invention
It is an object of the invention to provide a kind of micro-strip array antenna, solves conventional microstrip array antenna and uses T junction work(
Beam deviation caused by during point device, the problems such as frequency band is narrow, loosely organized.
The technical scheme for realizing the object of the invention is：A kind of micro-strip array antenna, including medium substrate and it is arranged on medium
Eight groups of radiating elements on substrate, every group of radiating element include the sub- radiating element of two similar frequency bands, and 16 son radiation are single
Member arranges in the same direction on medium substrate according to 4 × 4；
The feeding network between two sub- radiating elements in each group is a first one-to-two T junction power splitter, each
Two output ports of the first one-to-two T junction power splitter by microstrip line connect corresponding to two sub- radiating elements, each two
One one-to-two T junction power splitter input port is connected with a second one-to-two T junction power splitter output port by microstrip line,
The second one-to-two of each two T junction power splitter input port passes through micro- with a 3rd one-to-two T junction power splitter output port
Band line is connected, and two the 3rd one-to-two T junction power splitter input ports pass through with the 4th one-to-two T junction power splitter output port
Microstrip line is connected, and the 4th one-to-two T junction power splitter input port is as feed port.
Compared with prior art, remarkable advantage of the invention is：
(2) present invention uses 4*4 micro-strip array antennas, while changes the design of feeding network, improves the gain of antenna
While, solve beam deviation caused by when using traditional single T junction power splitter, the waste of antenna overall space etc. well
Problem；(2) one section of arched transmission lines will be increased in traditional T junction power splitter, can so avoid sky caused by lineal layout
Between waste, reduce antenna area occupied, increase the compactedness of whole antenna structure, so as to improve the radiation efficiency of whole antenna.
Brief description of the drawings
Fig. 1 is micro-strip array antenna overall structure figure.
Fig. 2 is conventional microstrip array aerial direction figure.
Fig. 3 is micro-strip array antenna directional diagram of the present invention.
Fig. 4 is conventional microstrip array antenna standing-wave ratio figure.
Fig. 5 is micro-strip array antenna standing-wave ratio figure of the present invention.
Fig. 6 is power splitter return loss plot of the present invention.
Specific embodiment
With reference to Fig. 1, a kind of micro-strip array antenna, including medium substrate and eight groups of radiation lists being arranged on medium substrate
Member, every group of radiating element include the sub- radiating element of two similar frequency bands, and 16 sub- radiating elements are on medium substrate according to 4
× 4 arrange in the same direction；
The feeding network between two sub- radiating elements in each group is a first one-to-two T junction power splitter, each
Two output ports of the first one-to-two T junction power splitter by microstrip line connect corresponding to two sub- radiating elements, each two
One one-to-two T junction power splitter input port is connected with a second one-to-two T junction power splitter output port by microstrip line,
The second one-to-two of each two T junction power splitter input port passes through micro- with a 3rd one-to-two T junction power splitter output port
Band line is connected, and two the 3rd one-to-two T junction power splitter input ports pass through with the 4th one-to-two T junction power splitter output port
Microstrip line is connected, and the 4th one-to-two T junction power splitter input port is as feed port；Whole feed is connected by cascade system
16 deciles are accomplished in network, guarantee.
Further, the second one-to-two T junction power splitter input port and the 3rd one-to-two T junction power splitter output port
It is connected by 90 degree of arched transmission lines.90 degree of arched transmission lines are the transmission line of one section of quarter circular arc.
Further, every sub- radiating element is a rectangular microband paste.
Further, the thickness of medium substrate is 2mm, and material is Rogers Ro 4350, dielectric constant 3.66.
Further, the medium substrate back side is provided with ground plane.
Further, the aerial array working frequency range is in Ka wave bands.
Further, spacing of all sub- radiating elements on medium substrate is identical.
The present invention uses 4*4 micro-strip array antennas, while changes the design of feeding network, improve antenna gain it is same
When, also it is well understood that beam deviation caused by when using traditional single T junction power splitter of having determined, antenna overall space waste etc. is asked
Topic.Fig. 2 and Fig. 3 is respectively that generated antenna radiation pattern is emulated by HFSS, and Fig. 2 is traditional T junction power divider structure antenna
Directional diagram, the antenna diagram that Fig. 3 is generated by 90 degree of arched transmission lines of increase, it can be seen that Fig. 3 solves figure well
Caused by 2 the problem of beam deviation, the gain of Fig. 3 depicted antennas is also higher than Fig. 2.Fig. 4 and Fig. 5 represents staying for two antennas respectively
Bob VSWR, it is evident that the working frequency range that must can be seen that Fig. 5 is significantly greater than Fig. 4, also demonstrates the superiority of the structure.
The whole most crucial crucial part of Antenna Design is the design of power division network, and Fig. 6 represents the T-shaped power splitter after changing
Return loss, it can be seen that in Ka wavelength bands, return loss is in normal range (NR), and presents increasingly
Excellent trend.
Rectangular microstrip antenna array uses the coplanar feeding classification of microstrip line.In this way, microstrip line can by
Gap is stretched into inside paster, the required impedance lower than edge is obtained, as long as reasonably selecting gap length, it is possible to wider
Impedance matching is realized in frequency band range, so as to increase impedance bandwidth.
Claims (8)
1. a kind of micro-strip array antenna, it is characterised in that including medium substrate and eight groups of radiation lists being arranged on medium substrate
Member, every group of radiating element include the sub- radiating element of two similar frequency bands, and 16 sub- radiating elements are on medium substrate according to 4
× 4 arrange in the same direction；
The feeding network between two sub- radiating elements in each group is a first one-to-two T junction power splitter, each first
Two output ports of one-to-two T junction power splitter by microstrip line connect corresponding to two sub- radiating elements, each two the 1st
It is divided to two output ports of two T junction power splitter input ports and a second one-to-two T junction power splitter to pass through microstrip line phase
Even, two output ends of the second one-to-two of each two T junction power splitter input port and a 3rd one-to-two T junction power splitter
Mouthful it is connected by microstrip line, the two of two the 3rd one-to-two T junction power splitter input ports and the 4th one-to-two T junction power splitter
Individual output port is connected by microstrip line, and the 4th one-to-two T junction power splitter input port is as feed port.
2. micro-strip array antenna according to claim 1, it is characterised in that the second one-to-two T junction power splitter input
Mouth is connected with the 3rd one-to-two T junction power splitter output port by 90 degree of arched transmission lines.
3. micro-strip array antenna according to claim 1 or 2, it is characterised in that every sub- radiating element is a rectangle
Microband paste.
4. micro-strip array antenna according to claim 1, it is characterised in that the thickness of medium substrate is 2mm, and material is
Rogers Ro 4350。
5. micro-strip array antenna according to claim 4, it is characterised in that the dielectric constant of medium substrate is 3.66.
6. according to the micro-strip array antenna described in claim 1,4 or 5, it is characterised in that the medium substrate back side is provided with ground connection
Layer.
7. micro-strip array antenna according to claim 1, it is characterised in that the aerial array working frequency range is in Ka wave bands.
8. micro-strip antenna array according to claim 1, it is characterised in that all sub- radiating elements are on medium substrate
Spacing is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710776113.4A CN107645067A (en) | 2017-08-31 | 2017-08-31 | A kind of micro-strip array antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710776113.4A CN107645067A (en) | 2017-08-31 | 2017-08-31 | A kind of micro-strip array antenna |
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| CN107645067A true CN107645067A (en) | 2018-01-30 |
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| CN201710776113.4A Pending CN107645067A (en) | 2017-08-31 | 2017-08-31 | A kind of micro-strip array antenna |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808220A (en) * | 2018-06-07 | 2018-11-13 | 南京理工大学 | A kind of wideband microstrip array antenna using waveguide feed |
| CN109411904A (en) * | 2018-12-11 | 2019-03-01 | 天津七六四通信导航技术有限公司 | A kind of 16 array-element antennas |
| CN109687122A (en) * | 2018-11-27 | 2019-04-26 | 重庆秦嵩科技有限公司 | A kind of broadband low minor lobe array antenna |
| CN111509379A (en) * | 2020-04-09 | 2020-08-07 | 山东华箭科工创新科技有限公司 | Double-layer 5G microstrip array antenna |
| CN112018524A (en) * | 2020-07-09 | 2020-12-01 | 中国人民解放军战略支援部队信息工程大学 | Design method of single-port input arbitrary N-port output VICTS feed excitation layer |
| CN114824804A (en) * | 2021-01-28 | 2022-07-29 | 京东方科技集团股份有限公司 | Antenna and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20160139753A (en) * | 2015-05-28 | 2016-12-07 | 금오공과대학교 산학협력단 | Unequal Gysel power divider |
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2017
- 2017-08-31 CN CN201710776113.4A patent/CN107645067A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160139753A (en) * | 2015-05-28 | 2016-12-07 | 금오공과대학교 산학협력단 | Unequal Gysel power divider |
Non-Patent Citations (1)
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| 杨站: ""24GHz汽车防撞雷达天馈关键技术研究"", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808220A (en) * | 2018-06-07 | 2018-11-13 | 南京理工大学 | A kind of wideband microstrip array antenna using waveguide feed |
| CN108808220B (en) * | 2018-06-07 | 2020-06-05 | 南京理工大学 | Broadband microstrip array antenna adopting waveguide feed |
| CN109687122A (en) * | 2018-11-27 | 2019-04-26 | 重庆秦嵩科技有限公司 | A kind of broadband low minor lobe array antenna |
| CN109411904A (en) * | 2018-12-11 | 2019-03-01 | 天津七六四通信导航技术有限公司 | A kind of 16 array-element antennas |
| CN109411904B (en) * | 2018-12-11 | 2023-09-19 | 天津七六四通信导航技术有限公司 | Sixteen-array element antenna |
| CN111509379A (en) * | 2020-04-09 | 2020-08-07 | 山东华箭科工创新科技有限公司 | Double-layer 5G microstrip array antenna |
| CN112018524A (en) * | 2020-07-09 | 2020-12-01 | 中国人民解放军战略支援部队信息工程大学 | Design method of single-port input arbitrary N-port output VICTS feed excitation layer |
| CN114824804A (en) * | 2021-01-28 | 2022-07-29 | 京东方科技集团股份有限公司 | Antenna and preparation method thereof |
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Application publication date: 20180130 |