CN205429159U - Broadband antenna based on coplane waveguide feed - Google Patents
Broadband antenna based on coplane waveguide feed Download PDFInfo
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- CN205429159U CN205429159U CN201620237723.8U CN201620237723U CN205429159U CN 205429159 U CN205429159 U CN 205429159U CN 201620237723 U CN201620237723 U CN 201620237723U CN 205429159 U CN205429159 U CN 205429159U
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- wave guide
- feeding network
- earth plate
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Abstract
The utility model discloses a broadband antenna based on coplane waveguide feed, medium base plate including the rectangle structure, medium base plate thickness is 0.5mm, one side of medium base plate is provided with radiation paster, feed network and ground plate respectively, radiating the paster and including integrative top that forms and lower part, top comprises the rectangle that is provided with the corner cut, and the lower part is divided into " protruding " style of calligraphy structure, the lower extreme of radiation paster is connected with feed network, the ground plate sets up around radiation paster and feed network, the middle part of ground plate is equipped with the rectangle defect, and the lower part of ground plate is equipped with the rectangle opening that is used for feed network to pass through. The utility model discloses does broadband antenna working frequency band cover 3.55 6.75GHz. In effective bandwidth, the antenna all reaches good impedance match. This antenna structure is simple, the size is small and exquisite, easy preparation, is applicable to wireless communication system, has extensive application prospect.
Description
Technical field
The utility model relates to a kind of broad-band antenna, in particular, relates to a kind of novel width based on coplanar wave guide feedback
Band antenna.
Background technology
In recent years, novel broad-band antenna, quickly grow, its important characteristic is broadband, covers on a large scale.This kind of antenna
It is mainly used to make up the problem of narrow-band antenna narrower bandwidth and proposed and develop, in a wireless communication system, in order to realize
With other communication equipments integrated, make antenna simultaneously work in multiple situation, therefore miniaturization and the broadband of antenna becomes
The focus of research.The noiseproof feature of antenna determines antenna must possess the features such as broadband, volume be little, to reduce interference,
Improve communication quality.
The broadband antenna design being applied to radio communication should meet corresponding requirement according to actual needs.In wide-band communication system,
The features such as the miniaturization of antenna, low cost, manufacture difficulty is little, be easily integrated also become evaluation antenna practicality and the weight of cost performance
Want index.
The feeding classification of coplanar wave guide feedback makes the radiation patch of antenna and earth plate in the same plane, so can effectively drop
The size of low antenna.The broad-band antenna of coplanar wave guide feedback, it has more broader bandwidth than microstrip antenna, relatively stable direction
The advantages such as property.And, the antenna of coplanar wave guide feedback is processed and is debugged conveniently, is easily integrated so that it becomes broad-band antenna and grinds
Study carefully the selection good with application.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, it is provided that the broadband of a kind of novel coplanar wave guide feedback
Antenna, its working band covers 3.55-6.75GHz.In effective bandwidth, antenna all reaches good impedance matching.This antenna
Simple in construction, compact size, be prone to make, it is adaptable to wireless communication system, have wide practical use.
The purpose of this utility model is achieved through the following technical solutions:
A kind of broad-band antenna based on coplanar wave guide feedback, including the medium substrate of rectangular configuration, the thickness of described medium substrate is
0.5mm, the side of described medium substrate is respectively arranged with radiation patch, feeding network and earth plate, and described radiation patch includes
Integral part of upper and bottom section, upper part is made up of the rectangle being provided with corner cut, and bottom is divided into " convex " font structure；Institute
The lower end stating radiation patch is connected with feeding network, and described earth plate is arranged on the surrounding of radiation patch and feeding network, described
The middle part of earth plate is provided with rectangle defect, and the bottom of earth plate is provided with the rectangular aperture passed through for feeding network.
Distance between described earth plate and feeding network is 0.8mm.
The height of described rectangular aperture is 6mm.The a length of 7mm of described feeding network.
Described medium substrate is epoxy resin board.The relative dielectric constant of described medium substrate is 4.4, and its dielectric loss tangent value is
0.02。
The specification of described medium substrate is 28mm × 26mm.
Compared with prior art, the technical solution of the utility model is had the benefit that
1. the side of the utility model antenna medium substrate is respectively arranged with radiation patch, feeding network and earth plate, radiation patch
Sheet includes integral part of upper and bottom section, and upper part is made up of the rectangle being provided with corner cut, and bottom is divided into " convex " font to tie
Structure, earth plate is arranged on the surrounding of radiation patch and feeding network, and the middle part of earth plate is provided with rectangle defect, the bottom of earth plate
Being provided with the rectangular aperture passed through for feeding network, arrangement above makes this beamwidth of antenna be 3.55-6.75GHz, and antenna is effectively
Reflectance factor in bandwidth is less than-10dB, and voltage standing wave ratio is less than 2；Can covering part WiMAX frequency range, C-band, big
Multiple frequency ranges such as capacity microwave communication frequency range and WLAN frequency range, can apply to multiple situation, practical.
2. in the utility model antenna, rectangular configuration to radiation patch upper part has carried out corner cut process, improves the impedance of antenna
Match condition, enables the antenna to enough be applied to multiple occasion, adds practicality.
3. in the utility model antenna, the size of all parts and structure is all to be obtained by careful design after emulation experiment, changes and appoints
What one of them size all can produce impact to the performance of the utility model antenna, wherein earth plate distance feeding network away from
From for 0.8mm, when the height of rectangular aperture is 6mm, antenna performance is the most excellent, and global design is reasonable, simple in construction.
4. the utility model antenna has good radiance and impedance matching, meets the design requirement of broad-band antenna.
Accompanying drawing explanation
Fig. 1 is plan structure schematic diagram of the present utility model.
Fig. 2 is side-looking structural representation of the present utility model.
Fig. 3 is the physical dimension schematic diagram of the utility model specific embodiment.
The reflectance factor simulation result of antenna that in Fig. 4 the utility model, radiating element has, processes without corner cut.
Fig. 5 is the only reflectance factor simulation result of height (H) the asynchronous antenna of rectangular aperture in earth plate.
Fig. 6 is the reflectance factor simulation result of only distance (S) asynchronous antenna between earth plate and feeding network.
Fig. 7 (a), Fig. 7 (b) and Fig. 7 (c) are that the utility model antenna is respectively at 4.5GHz, 5.5GHz and 6.5GHz
Antenna pattern at three frequencies.
Reference: 1-medium substrate 2-radiation patch 3-feeding network 4-earth plate 5-rectangle defect 6-rectangular aperture
Detailed description of the invention
The utility model will be further described below in conjunction with the accompanying drawings:
As depicted in figs. 1 and 2, a kind of broad-band antenna based on coplanar wave guide feedback, including the medium substrate 1 of rectangular configuration,
Medium substrate 1 is made up of epoxy resin (FR4Epoxy), and its relative dielectric constant is 4.4, and its dielectric loss tangent value is 0.02.
Antenna in the present embodiment is to be produced on the medium substrate 1 that specification is 28mm × 26mm by engraving method, is situated between
The thickness of matter substrate 1 is 0.5mm, and radiation patch 2, feeding network 3 and earth plate 4 are respectively printed at the one of medium substrate 1
Side, radiation patch 2 includes integral part of upper and bottom section, and upper part is made up of the rectangular configuration processed through corner cut,
Bottom is divided into " convex " font structure；The lower end of radiation patch 2 is connected with feeding network 3, a length of 7mm of feeding network 3,
Feeding classification uses coplanar wave guide feedback, and input impedance is 50 Ω, and earth plate 4 is arranged on radiation patch 2 and feeding network 3
Surrounding, the middle part of earth plate 4 is provided with rectangle defect, and the bottom of earth plate 4 is provided with the rectangular aperture passed through for feeding network 3
6。
As shown in Figure 3: the figure shows is the utility model antenna concrete dimensional parameters after optimizing design, and unit is
Millimeter, wherein the thickness of medium substrate 1 is 0.5mm.
For the correlation properties of researching antenna, utilize all-wave 3 D electromagnetic simulation software, to the antenna with different structure or parameter
Emulate and optimize, obtaining the reflectance factor of antenna, and be analyzed.To antenna at 4.5GHz, 5.5GHz and 6.5GHz
Emulate at frequency, obtain antenna antenna pattern at this frequency, and simulation result is analyzed.Fig. 4, Fig. 5
It it is the reflectance factor simulation result of the antenna of different structure or the parameter designed with Fig. 6.In Fig. 7, (a), (b), (c) are respectively antenna
Antenna pattern simulation result at 4.5GHz, 5.5GHz and 6.5GHz frequency.
As seen from Figure 4: when the radiation patch of antenna carries out corner cut process, the bandwidth of antenna covers 3.55-6.75GHz；
When the radiation patch of antenna processes without corner cut, the beamwidth of antenna is still 3.55-6.75GHz, but now antenna resistance in this bandwidth
Anti-coupling is deteriorated.Visible, the rectangular radiation element of antenna is carried out corner cut when processing, the resistance of antenna can be improved to a certain extent
Anti-match condition, do so can enable the antenna to enough be applied to multiple occasion, increase its practicality.
By Fig. 3 and 5 it can be seen that corresponding to aerial radiation paster 2 and the gap size of earth plate 4, i.e. rectangular aperture 6
The performance of antenna can be affected by the height (H) of earth plate 4 bottom.Only parameter H of antenna is optimized,
Obtain optimum results.H in the present embodiment is 6mm, and the bandwidth of antenna covers 3.55-6.75GHz；When H is subtracted by 6mm
Little to 5.5mm time, the beamwidth of antenna is kept to 3.6-6.5GHz, and level of impedance match is deteriorated, and changes greatly；When H is by 6mm
When increasing to 6.5mm, the beamwidth of antenna is basically unchanged, but level of impedance match is poor.Visible, when parameter H of antenna takes conjunction
Suitable value, i.e. during 6mm, antenna has good bandwidth and impedance matching.
By Fig. 3 and Fig. 6 it can be seen that the size of distance (S) between earth plate 4 and feeding network 3 also can affect antenna
Specific performance.Only parameter S of antenna is optimized, obtains optimum results.S in the present embodiment is 0.8mm, antenna
Bandwidth covers 3.55-6.75GHz；When S is reduced to 0.6mm by 0.8mm, the beamwidth of antenna varies less, but impedance matching
Degree becomes poor；When S is increased to 1.1mm by 0.8mm, the beamwidth of antenna narrows, and i.e. carries a width of 3.4-5.6GHz.Can
Seeing, will obtain good antenna performance, the size of parameter S is most important, and taking S here is 0.8mm.
By the return loss simulation result of above several different structures and the antenna of parameter it can be seen that radiation patch, transmission network
Network and the structure of earth plate and relevant parameter can be to the bandwidth of antenna and level of impedance match generation effects, it is desirable to obtain ideal
Antenna, be necessary for setting suitable antenna structure and parameter, similarly, other parameters of antenna be optimized, finally give
Optimum-size of the present utility model (see Fig. 3).
From Fig. 7 (a)-(c), the antenna antenna pattern in E face and H face respectively in approximation fall the figure of eight and
Circle, and antenna presents stable radiation direction characteristic at tri-frequencies of 4.5GHz, 5.5GHz and 6.5GHz.Wherein E
Face refers to the directional diagram tangent plane parallel with direction of an electric field；H face refers to the directional diagram tangent plane parallel with magnetic direction.
To sum up: the utility model antenna reflectance factor in 3.55-6.75GHz frequency range is less than-10dB, and level of impedance match is good
Good, and there is good radiance, meet the requirement of broadband antenna design.
Claims (7)
1. a broad-band antenna based on coplanar wave guide feedback, including the medium substrate of rectangular configuration, its feature exists
In, the thickness of described medium substrate is 0.5mm, the side of described medium substrate be respectively arranged with radiation patch,
Feeding network and earth plate, described radiation patch includes integral part of upper and bottom section, and upper part is by setting
The rectangle being equipped with corner cut is constituted, and bottom is divided into " convex " font structure；The lower end of described radiation patch and feeding network
Being connected, described earth plate is arranged on the surrounding of radiation patch and feeding network, and the middle part of described earth plate is provided with
Rectangle defect, the bottom of earth plate is provided with the rectangular aperture passed through for feeding network.
A kind of broad-band antenna based on coplanar wave guide feedback the most according to claim 1, it is characterised in that
Distance between described earth plate and feeding network is 0.8mm.
A kind of broad-band antenna based on coplanar wave guide feedback the most according to claim 1, it is characterised in that
The height of described rectangular aperture is 6mm.
A kind of broad-band antenna based on coplanar wave guide feedback the most according to claim 1, it is characterised in that
Described medium substrate is epoxy resin board.
5., according to a kind of based on coplanar wave guide feedback the broad-band antenna described in claim 1 or 4, its feature exists
In, the relative dielectric constant of described medium substrate is 4.4, and its dielectric loss tangent value is 0.02.
6. according to a kind of based on coplanar wave guide feedback the broad-band antenna described in claim 1 or 4, its feature
Being, the specification of described medium substrate is 28mm × 26mm.
A kind of broad-band antenna based on coplanar wave guide feedback the most according to claim 1, it is characterised in that
The a length of 7mm of described feeding network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620237723.8U CN205429159U (en) | 2016-03-24 | 2016-03-24 | Broadband antenna based on coplane waveguide feed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620237723.8U CN205429159U (en) | 2016-03-24 | 2016-03-24 | Broadband antenna based on coplane waveguide feed |
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| CN205429159U true CN205429159U (en) | 2016-08-03 |
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| CN201620237723.8U Expired - Fee Related CN205429159U (en) | 2016-03-24 | 2016-03-24 | Broadband antenna based on coplane waveguide feed |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680172A (en) * | 2016-03-24 | 2016-06-15 | 天津大学 | Coplanar waveguide feed based wide-band antenna |
| CN106450735A (en) * | 2016-11-14 | 2017-02-22 | 北京邮电大学 | Graphene radio-frequency antenna and preparation method thereof |
| CN109244654A (en) * | 2018-08-20 | 2019-01-18 | 中国电力科学研究院有限公司 | A kind of TV interference measurement paster antenna, TV interference measuring device and method |
| CN110419144A (en) * | 2017-11-08 | 2019-11-05 | 深圳市大疆创新科技有限公司 | Antenna element and aerial array |
| CN110829000A (en) * | 2019-11-19 | 2020-02-21 | 榆林学院 | CPW feed dual-frequency broadband SRR structure loaded single-plane antenna |
-
2016
- 2016-03-24 CN CN201620237723.8U patent/CN205429159U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680172A (en) * | 2016-03-24 | 2016-06-15 | 天津大学 | Coplanar waveguide feed based wide-band antenna |
| CN106450735A (en) * | 2016-11-14 | 2017-02-22 | 北京邮电大学 | Graphene radio-frequency antenna and preparation method thereof |
| CN110419144A (en) * | 2017-11-08 | 2019-11-05 | 深圳市大疆创新科技有限公司 | Antenna element and aerial array |
| CN109244654A (en) * | 2018-08-20 | 2019-01-18 | 中国电力科学研究院有限公司 | A kind of TV interference measurement paster antenna, TV interference measuring device and method |
| CN109244654B (en) * | 2018-08-20 | 2022-09-27 | 中国电力科学研究院有限公司 | Patch antenna for television interference measurement, television interference measurement device and method |
| CN110829000A (en) * | 2019-11-19 | 2020-02-21 | 榆林学院 | CPW feed dual-frequency broadband SRR structure loaded single-plane antenna |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20170324 |
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| CF01 | Termination of patent right due to non-payment of annual fee |