CN104269646B - High-isolation microstrip antenna - Google Patents
High-isolation microstrip antenna Download PDFInfo
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- CN104269646B CN104269646B CN201410567297.XA CN201410567297A CN104269646B CN 104269646 B CN104269646 B CN 104269646B CN 201410567297 A CN201410567297 A CN 201410567297A CN 104269646 B CN104269646 B CN 104269646B
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- medium substrate
- diapire
- microstrip antenna
- isolation
- radiating element
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Abstract
High-isolation microstrip antenna includes first medium substrate, radiating element, second medium substrate, parasitic couplings unit, feeding network and reflecting element；This reflecting element includes diapire and perisporium, and this perisporium upwardly extends from the periphery of this diapire and forms, and surrounds a reflection cavity between this diapire and this perisporium；The upper limb of this perisporium extends reflecting plate obliquely, and this reflecting plate is located at the top of this diapire；This first medium substrate is installed on the diapire of this reflecting element, and, all on the front of this first medium substrate, this feeding network connects this radiating element for this radiating element and feeding network；This parasitic couplings unit is on the front of this second medium substrate；This second medium substrate is located at interval at the top of this first medium substrate, and this parasitic couplings unit is located at the surface of this radiating element and this feeding network.Foregoing invention can be realized high-isolation, and have higher gain, small volume, beneficial to integrated installation on the premise of optimizing the beamwidth of antenna.
Description
Technical field
The present invention relates to a kind of high-isolation microstrip antenna.
Background technology
Microstrip antenna is to stick thin metal layer as earth terminal, another side photoetching corrosion in the one side of a thin-medium substrate
Method makes the metal patch of definite shape as radiating element, and the one kind being fed to metal patch using microstrip line and constituting
Antenna.Divide by architectural feature, microstrip antenna includes micro-strip paster antenna and microstrip slot antenna.
Existing micro-strip paster antenna generally comprises medium substrate, the radiating element in front being printed on medium substrate and feedback
Electric network, and it is mounted on the metal level at the back side of medium substrate（I.e. earth terminal）, wherein this radiating element generally circle
Or the metal patch of rectangle.The isolation of this kind of microstrip antenna is poor, typically passes through at present to increase reflection plate suqare, increases between antenna
Away from or microstrip antenna group battle array to improve isolation, but make antenna volume excessive it has not been convenient to integrated installation.
Content of the invention
For the deficiencies in the prior art, the purpose of the present invention be intended to provide a kind of height solving above-mentioned technical problem every
From degree microstrip antenna.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of high-isolation microstrip antenna, it includes first medium substrate, radiating element, feeding network and reflecting element；
This reflecting element includes diapire and perisporium, and this perisporium upwardly extends from the periphery of this diapire and forms, this diapire and should
A reflection cavity is surrounded between perisporium；The upper limb of this perisporium extends reflecting plate obliquely, and this reflecting plate is located at the upper of this diapire
Side；
This radiating element, feeding network and this first medium substrate are all contained in the reflection intracavity of this reflecting element；This
One medium substrate is installed on the diapire of this reflecting element, and this radiating element and feeding network are all located at this first medium substrate
On front, this feeding network connects this radiating element.
Preferably, this reflecting element is rectangle box body shape, and its perisporium is surrounded by four side walls, and the quantity of this reflecting plate is two
Individual, two reflecting plates extend obliquely from the upper limb of wherein two opposite side walls respectively and form.
Preferably, the opposite side wall of this reflecting element and diapire respectively offer trough.
Preferably, this feeding network includes horizontal microstrip line, lower horizontal microstrip line and longitudinal microstrip line, laterally micro- on this
Band wire extends from the middle part of this longitudinal microstrip line to both sides, and this lower horizontal microstrip line prolongs from this longitudinal microstrip line lower end to both sides
Stretch, the upper end of this longitudinal microstrip line connects this radiating element, this lower horizontal microstrip line is shorter than upper horizontal microstrip line.
Preferably, this microstrip antenna also includes a second medium substrate and a parasitic couplings unit；This parasitic couplings unit
On the front of this second medium substrate；This second medium substrate and this parasitic couplings unit housing are anti-in this reflecting element
Penetrate intracavity, this second medium substrate is located at interval at the top of this first medium substrate, this parasitic couplings unit is located at this radiation list
Unit and the surface of this feeding network.
Preferably, the corner of this first medium substrate respectively opens up one first positioning through hole, the corner of this second medium substrate
Respectively open up one second positioning through hole, the corner of the diapire of this reflecting element respectively opens up one the 3rd positioning through hole, insulated fasteners according to
Secondary through just to the second positioning through hole, the first positioning through hole and the 3rd positioning through hole so that second medium substrate, first Jie
The diapire of matter substrate and reflecting element is spaced fixation from top to bottom.
Preferably, this microstrip antenna still further comprises two groups of wave-absorbers on the front of first medium substrate, and two
Group wave-absorber is respectively separated positioned at the left side of this radiating element and right side.
Preferably, this microstrip antenna still further comprises two groups of wave-absorbers on the front of first medium substrate, and two
Group wave-absorber is respectively separated positioned at the left side of this radiating element and right side.
Preferably, each group of wave-absorber includes the suction ripple unit of four longitudinally spaced arrangements.
Preferably, this microstrip antenna also includes the ground metal layer at the back side located at this first medium substrate.
Beneficial effects of the present invention at least include following some：
1st, the reflecting plate of the reflecting element of foregoing invention can effectively strengthen the reflecting effect of reflection cavity, thus realizing high isolation
Degree, and small volume, are advantageously integrated installation, can adjust antenna by the angle of the size of adjustment reflecting plate and relative level
Reflection size, and then adjust degree of isolation.
2nd, two groups of wave-absorbers are conducive to improving isolation 5-10db.
3rd, this parasitic couplings unit is conducive to optimizing the bandwidth of antenna, can be by adjusting parasitic couplings unit and radiating element
The distance between reaching optimum bandwidth.
Brief description
Fig. 1 is the exploded perspective view of the better embodiment of high-isolation microstrip antenna of the present invention.
Fig. 2 is the structural representation of the first medium substrate, radiating element and feeding network of high-isolation microstrip antenna of Fig. 1
Figure.
Fig. 3 is the structural representation of the reflecting element of high-isolation microstrip antenna of Fig. 1.
Fig. 4 be Fig. 1 high-isolation microstrip antenna second medium substrate and parasitic couplings unit structural representation.
Fig. 5 is the first medium substrate of another better embodiment of high-isolation microstrip antenna of the present invention, radiating element,
Feeding network and the structural representation of wave-absorber.
Fig. 6 emulates, by HFSS, the simulated return loss figure that microstrip antenna is generated by the present invention.
Specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further：
Refer to Fig. 1 to Fig. 4, the present invention relates to a kind of high-isolation microstrip antenna, its better embodiment includes first
Medium substrate 5, radiating element 1, feeding network 2, ground metal layer（Not shown）With reflecting element 8.
This reflecting element 8 includes diapire and perisporium, and this perisporium upwardly extends from the periphery of this diapire and forms, this diapire and should
A reflection cavity is surrounded between perisporium.The upper limb of this perisporium extends reflecting plate 81 obliquely, and this reflecting plate 81 is located at this diapire
Top.
This radiating element 1, feeding network 2 and this first medium substrate 5 are all contained in the reflection intracavity of this reflecting element 8.
This first medium substrate 5 is installed on the diapire of this reflecting element 8.This radiating element 1 and feeding network 2 are all located at this first Jie
On the front of matter substrate 5, this feeding network 2 connects this radiating element 1.This ground metal layer is located at this first medium substrate 5
The back side.
The reflecting plate 81 of the reflecting element 8 of foregoing invention can effectively strengthen the reflecting effect of reflection cavity, thus realize high every
From degree, and small volume, it is advantageously integrated installation.Can by such as 30 degree of the angle of the size of adjustment reflecting plate 81 and relative level extremely
60 degree adjusting the reflection size of antenna.
In the present embodiment, this reflecting element 8 is rectangle box body shape, and its perisporium is surrounded by four side walls, this reflecting plate 81
Quantity is two, and two reflecting plates 81 extend obliquely from the upper limb of wherein two opposite side walls respectively and form.So, isolation effect is more
Good.
The opposite side wall of this reflecting element 8 and diapire respectively offer trough 9, to facilitate wiring.
Above-mentioned radiating element 1 is rectangular metal paster.
This feeding network 2 includes horizontal microstrip line, lower horizontal microstrip line and longitudinal microstrip line, on this horizontal microstrip line from
The middle part of this longitudinal microstrip line extends to both sides, and this lower horizontal microstrip line extends from this longitudinal microstrip line lower end to both sides, should
The upper end of longitudinal microstrip line connects this radiating element 1, and this lower horizontal microstrip line is shorter than upper horizontal microstrip line.
In the present embodiment, this microstrip antenna also includes a second medium substrate 6 and a parasitic couplings unit 4.This parasitic coupling
Close unit 4 on the front of this second medium substrate 6.It is anti-that this second medium substrate 6 and this parasitic couplings unit 4 are contained in this
Penetrate the reflection intracavity of element 8, this second medium substrate 6 is located at interval at the top of this first medium substrate 5, this parasitic couplings list
Unit 4 is located at the surface of this radiating element 1 and this feeding network 2.So, the isolation effect of this microstrip antenna can be made more preferably,
Amount of bandwidth can be adjusted by adjusting interval height between second medium substrate 6 and first medium substrate 5, to ensure bandwidth
On the premise of unaffected, improve isolation.
Specifically, the corner of this first medium substrate 5 respectively opens up one first positioning through hole, and the four of this second medium substrate 6
Angle respectively opens up one second positioning through hole, and the corner of the diapire of this reflecting element 8 respectively opens up one the 3rd positioning through hole, insulated fasteners
（Not shown）Sequentially pass through just to the second positioning through hole, the first positioning through hole and the 3rd positioning through hole so that second medium
The diapire of substrate 6, first medium substrate 5 and reflecting element 8 is spaced fixation from top to bottom.Preferably, insulated fasteners include moulding
Material spacer and plastics screw.
The thickness of this first medium substrate 5 can be 08 to 0.16 millimeter, and the thickness of this second medium substrate 6 can be 2 to 3.2
Millimeter.
As shown in figure 5, except the feature including above-described embodiment, in other embodiment, this microstrip antenna also wraps further
Include two groups of wave-absorbers 7 on the front of first medium substrate 5, two groups of wave-absorbers 7 are respectively separated positioned at this radiating element 1
Left side and right side, for example, the interval between two groups of wave-absorbers 7 and this radiating element 1 is respectively about 2 millimeters.So, antenna can be improved
Isolation such as 5-10db.Concrete effect can be found in Fig. 6, and it is by HFSS（High Frequency Structure
Simulator, 3 D electromagnetic simulation software）The simulated return loss figure that phantom antenna is generated, the bandwidth of antenna is
1.905GHZ to 2.18GHZ, frequency band depth reaches -22 dB.
Preferably, each group of wave-absorber 7 includes the suction ripple unit of four longitudinally spaced arrangements, so, can be in certain journey
The radiation to side rear for the antenna is offset on degree.Each suction ripple unit inhales ripple printed element for metal.
This microstrip antenna can be directly mounted on metal shell.
For a person skilled in the art, can technical scheme as described above and design, make other each
Plant corresponding change and deform, and all these changes and deforms the protection model that all should belong to the claims in the present invention
Within enclosing.
Claims (9)
1. a kind of high-isolation microstrip antenna it is characterised in that：It include first medium substrate, radiating element, feeding network and
Reflecting element；
This reflecting element includes diapire and perisporium, and this perisporium upwardly extends from the periphery of this diapire and forms, this diapire and this perisporium
Between surround a reflection cavity；The upper limb of this perisporium extends reflecting plate obliquely, and this reflecting plate is located at the top of this diapire；
This radiating element, feeding network and this first medium substrate are all contained in the reflection intracavity of this reflecting element；This first Jie
Matter substrate is installed on the diapire of this reflecting element, and this radiating element and feeding network are all located at the front of this first medium substrate
On, this feeding network connects this radiating element；This feeding network includes horizontal microstrip line, lower horizontal microstrip line and longitudinal micro-strip
Line, on this, horizontal microstrip line extends from the middle part of this longitudinal microstrip line to both sides, and this lower horizontal microstrip line is from this longitudinal microstrip line
Lower end extends to both sides, and the upper end of this longitudinal microstrip line connects this radiating element, and this lower horizontal microstrip line is laterally more micro- than upper
Band wire is short.
2. high-isolation microstrip antenna as claimed in claim 1 it is characterised in that：This reflecting element is rectangle box body shape,
Its perisporium is surrounded by four side walls, and the quantity of this reflecting plate is two, and two reflecting plates are oblique from the upper limb of wherein two opposite side walls respectively
Upwardly extend and form.
3. high-isolation microstrip antenna as claimed in claim 2 it is characterised in that：The diapire of this reflecting element and wherein another
Side wall respectively offers trough.
4. high-isolation microstrip antenna as claimed any one in claims 1 to 3 it is characterised in that：This microstrip antenna also wraps
Include a second medium substrate and a parasitic couplings unit；This parasitic couplings unit is on the front of this second medium substrate；Should
, in the reflection intracavity of this reflecting element, this second medium substrate is located at interval at for second medium substrate and this parasitic couplings unit housing
The top of this first medium substrate, this parasitic couplings unit is located at the surface of this radiating element and this feeding network.
5. high-isolation microstrip antenna as claimed in claim 4 it is characterised in that：The corner of this first medium substrate respectively opens up
One first positioning through hole, the corner of this second medium substrate respectively opens up one second positioning through hole, and the four of the diapire of this reflecting element
Angle respectively opens up one the 3rd positioning through hole, insulated fasteners sequentially pass through just to the second positioning through hole, the first positioning through hole and
Three positioning through hole, so that the diapire of second medium substrate, first medium substrate and reflecting element is spaced fixation from top to bottom.
6. high-isolation microstrip antenna as claimed in claim 4 it is characterised in that：This microstrip antenna still further comprise located at
Two groups of wave-absorbers on the front of first medium substrate, two groups of wave-absorbers are respectively separated positioned at the left side of this radiating element and the right side
Side.
7. high-isolation microstrip antenna as claimed any one in claims 1 to 3 it is characterised in that：This microstrip antenna also enters
One step includes two groups of wave-absorbers on the front of first medium substrate, and two groups of wave-absorbers are respectively separated positioned at this radiating element
Left side and right side.
8. high-isolation microstrip antenna as claimed in claim 7 it is characterised in that：Each group of wave-absorber includes four along longitudinally
Spaced suction ripple unit.
9. high-isolation microstrip antenna as claimed any one in claims 1 to 3 it is characterised in that：This microstrip antenna also wraps
Include the ground metal layer at the back side located at this first medium substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567297.XA CN104269646B (en) | 2014-10-23 | 2014-10-23 | High-isolation microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567297.XA CN104269646B (en) | 2014-10-23 | 2014-10-23 | High-isolation microstrip antenna |
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| Publication Number | Publication Date |
|---|---|
| CN104269646A CN104269646A (en) | 2015-01-07 |
| CN104269646B true CN104269646B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410567297.XA Active CN104269646B (en) | 2014-10-23 | 2014-10-23 | High-isolation microstrip antenna |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216918B (en) * | 2017-06-30 | 2021-11-23 | 惠州硕贝德无线科技股份有限公司 | Antenna applied to metal shell and antenna system |
| CN108448243B (en) * | 2018-04-18 | 2023-11-03 | 华南理工大学 | High-gain linearly polarized reconfigurable antenna |
| CN110718769A (en) * | 2018-07-13 | 2020-01-21 | 杭州海康威视数字技术股份有限公司 | Dual-band directional antenna |
Citations (6)
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|---|---|---|---|---|
| CN2935504Y (en) * | 2006-08-18 | 2007-08-15 | 华为技术有限公司 | Base station array antenna |
| CN101160692A (en) * | 2005-12-22 | 2008-04-09 | 凯瑟雷恩工厂两合公司 | Dual-polarized antenna having longitudinal or transverse webs |
| CN102509845A (en) * | 2011-09-26 | 2012-06-20 | 航天恒星科技有限公司 | Multimode occulting antenna with stable phase center |
| CN202308313U (en) * | 2011-11-15 | 2012-07-04 | 中国计量学院 | Opening convex type double-frequency microstrip antenna based on EBG structure |
| CN203312457U (en) * | 2013-06-07 | 2013-11-27 | 深圳国人通信有限公司 | Antenna and antenna base plate thereof |
| CN204118263U (en) * | 2014-10-23 | 2015-01-21 | 福建京奥通信技术有限公司 | High-isolation microstrip antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6392600B1 (en) * | 2001-02-16 | 2002-05-21 | Ems Technologies, Inc. | Method and system for increasing RF bandwidth and beamwidth in a compact volume |
-
2014
- 2014-10-23 CN CN201410567297.XA patent/CN104269646B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101160692A (en) * | 2005-12-22 | 2008-04-09 | 凯瑟雷恩工厂两合公司 | Dual-polarized antenna having longitudinal or transverse webs |
| CN2935504Y (en) * | 2006-08-18 | 2007-08-15 | 华为技术有限公司 | Base station array antenna |
| CN102509845A (en) * | 2011-09-26 | 2012-06-20 | 航天恒星科技有限公司 | Multimode occulting antenna with stable phase center |
| CN202308313U (en) * | 2011-11-15 | 2012-07-04 | 中国计量学院 | Opening convex type double-frequency microstrip antenna based on EBG structure |
| CN203312457U (en) * | 2013-06-07 | 2013-11-27 | 深圳国人通信有限公司 | Antenna and antenna base plate thereof |
| CN204118263U (en) * | 2014-10-23 | 2015-01-21 | 福建京奥通信技术有限公司 | High-isolation microstrip antenna |
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| CN104269646A (en) | 2015-01-07 |
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Denomination of invention: High isolation microstrip antenna Effective date of registration: 20220906 Granted publication date: 20170301 Pledgee: Xiamen Jinyuan Financing Guarantee Co.,Ltd. Pledgor: FUJIAN HELIOS TECHNOLOGIES CO.,LTD. Registration number: Y2022980014562 |
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