CN105990670A - Circularly polarized antenna and communication apparatus - Google Patents
Circularly polarized antenna and communication apparatus Download PDFInfo
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- CN105990670A CN105990670A CN201510055464.7A CN201510055464A CN105990670A CN 105990670 A CN105990670 A CN 105990670A CN 201510055464 A CN201510055464 A CN 201510055464A CN 105990670 A CN105990670 A CN 105990670A
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- radiation patch
- lower floor
- polarized antenna
- circular polarized
- upper strata
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Abstract
The invention belongs to the antenna technical field and provides a circularly polarized antenna. The objective of the invention is to solve problems which are generated when a plurality of circularly polarized antennas are adopted to realize communication of different frequency bands. The circularly polarized antenna includes an upper-layer radiation patch, a lower-layer radiation patch, a substrate and a grounding surface; the upper-layer radiation patch and the lower-layer radiation patch are arranged on two opposite surfaces of the substrate respectively; the lower-layer radiation patch is located between the substrate and the grounding surface; the upper-layer radiation patch and the lower-layer radiation patch realize feeding through a coaxial feeding pin; the upper-layer radiation patch excites the lower-layer radiation patch; and the lower-layer radiation patch is adopted as the grounding surface of the upper-layer radiation patch and excites the upper-layer radiation patch through a coupled feeding mode. According to the circularly polarized antenna, the coaxial feeding pin is utilized to carry out direct feeding so as to excite the lower-layer radiation patch, so that a low frequency point can be realized; the lower-layer radiation patch is adopted as the grounding surface of the upper-layer radiation patch and excites the upper-layer radiation patch to carry out signal radiation through the coupled feeding mode, so that a high frequency point can be realized; and therefore, one port is utilized to carry out feeding, so that the antenna can work with double frequencies.
Description
Technical field
The invention belongs to antenna technical field, particularly relate to a kind of circular polarized antenna and communication equipment.
Background technology
Along with developing rapidly of wireless communication technology, the field involved by antenna technology is more and more extensive, is being permitted
In the most special application, the requirement for antenna performance is more and more higher.In modern communications, along with communication
The raising of level of integrated system, it is desirable to the antenna of use have high-gain, broadband or multiband, circular polarisation,
The features such as miniaturization, wide covering.In order to meet be actually needed, generally use microstrip antenna, loop aerial,
The structure such as electromagnetic horn, plane single pole sub antenna is as implementation.But there is different defects in these antenna.
In the prior art, when needs use multiband circular polarized antenna, it is common that by multiport, many
Antenna system realizes different frequency ranges, have that antenna amount is many, structure is complicated, polarization, gain performance difference etc.
Shortcoming.Such as, use two circular polarized antennas, by controlling each circular polarized antenna structure size and dielectric
Constant realizes different frequency range respectively, and this processes for back end signal and brings difficulty, it usually needs use two set letters
Number process part or arrange one switching switch to toggle.
Summary of the invention
It is an object of the invention to provide a kind of circular polarized antenna, use single port, a single aerial system, it is intended to
Solve prior art uses multiple circular polarized antenna to realize the communication issue of different frequency range.
The present invention is achieved in that a kind of circular polarized antenna, including upper strata radiation patch, lower floor's radiation patch
Sheet, substrate and ground plane, described upper strata radiation patch and described lower floor radiation patch are respectively arranged at described base
On two apparent surfaces of plate, described lower floor radiation patch is between described substrate and described ground plane；Described
Upper strata radiation patch and described lower floor radiation patch realize feed by coaxial feed pin and encourage described lower floor to radiate
Paster, described lower floor radiation patch is as the ground plane of described upper strata radiation patch and passes through coupling feed way
Encourage described upper strata radiation patch.
Further, the center of described lower floor radiation patch is provided with excitation groove.
Preferably, described excitation groove is cross.
Further, the dielectric constant of described upper strata radiation patch is normal less than the dielectric of described lower floor radiation patch
Number.
Further, the area of described upper strata radiation patch is less than the area of described lower floor radiation patch.
Further, one group of diagonal angle of described upper strata radiation patch is provided with the first asymmetrical chamfer, described lower floor spoke
The one group of diagonal angle penetrating paster is provided with the second asymmetrical chamfer.
Preferably, described first asymmetrical chamfer and described second asymmetrical chamfer are positioned at same angle direction.
Preferably, described first asymmetrical chamfer is orthogonally set with described second asymmetrical chamfer.
Preferably, the angle of described first asymmetrical chamfer and described second asymmetrical chamfer is 35 ° to 55 °.
Preferably, the angle of described first asymmetrical chamfer and described second asymmetrical chamfer is 45 °.
Further, described substrate is domed.
The present invention also provides for a kind of communication equipment including above-mentioned circular polarized antenna.
The present invention utilizes coaxial feed pin direct feed described with excitation relative to having the technical effect that of prior art
Lower floor's radiation patch, it is achieved low frequency point, meanwhile, utilizes described lower floor radiation patch as described upper strata spoke
Penetrate the ground plane of paster and encourage described upper strata radiation patch to carry out signal radiation by coupling feed way, with
Realize altofrequency point, so utilize a port to carry out feed and realize two kinds of different frequencies and be operated.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to the embodiment of the present invention or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, disclosed below is attached
Figure is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creation
Property work on the premise of, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the circular polarized antenna that the embodiment of the present invention provides；
Fig. 2 is the top view of circular polarized antenna in Fig. 1；
Fig. 3 is the side view of circular polarized antenna in Fig. 1；
Fig. 4 is the voltage standing wave ratio curve chart of circular polarized antenna in Fig. 1；
Fig. 5 is the gain curve figure of circular polarized antenna in Fig. 1；
Fig. 6 is that in Fig. 1, the axle of circular polarized antenna compares curve chart.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
Refer to Fig. 1 and Fig. 2, the circular polarized antenna that the embodiment of the present invention provides include upper strata radiation patch 10,
Lower floor's radiation patch 20, substrate 30 and ground plane 40, described upper strata radiation patch 10 and the radiation of described lower floor
Paster 20 is respectively arranged on two apparent surfaces of described substrate 30, and described lower floor radiation patch 20 is positioned at institute
State between substrate 30 and described ground plane 40；Described upper strata radiation patch 10 and described lower floor radiation patch
20 realize feeding and encouraging described lower floor radiation patch 20, described lower floor radiation patch by coaxial feed pin 50
20 as the ground plane 40 of described upper strata radiation patch 10 and encourage described upper strata spoke by coupling feed way
Penetrate paster 10.
The embodiment of the present invention provide circular polarized antenna utilize coaxial feed pin 50 direct feed with excitation described under
Layer radiation patch 20, it is achieved low frequency point, meanwhile, utilizes described lower floor radiation patch 20 as on described
The layer ground plane 40 of radiation patch 10 also encourages described upper strata radiation patch 10 to carry out by coupling feed way
Signal radiates, and to realize altofrequency point, so utilizes a port to carry out feed and realizes two kinds of different frequencies and enter
Row work.
In this embodiment, described upper strata radiation patch 10, described substrate 30, described lower floor radiation patch
20 and described ground plane 40 be from top to bottom cascading, described lower floor radiation patch 20 is fixed on described
On ground plane 40, it is preferable that be additionally provided with Jie between described lower floor radiation patch 20 and described ground plane 40
Matter layer, and utilize fastening screw to be fixed on by described dielectric layer on described ground plane 40 described lower floor to be radiated
Paster 20 is fixing with described ground plane 40 to be connected.
Refer to Fig. 1 and Fig. 2, in this embodiment, described lower floor radiation patch 20, described substrate 30
Being provided with, with described upper strata radiation patch 10, the through hole being mutually communicated, described coaxial feed pin 50 sequentially passes through institute
State the through hole of lower floor's radiation patch 20, described substrate 30 and described upper strata radiation patch 10 to form this circle
One feed port of poliarizing antenna.I.e. lower floor's radiation patch 20 of the present invention and described upper strata radiation patch
10 share a feed port, and without arranging multiple feed port, simplify the structure of this circular polarized antenna,
And the work of two-band signal can be realized simultaneously.
Refer to Fig. 2, further, the center of described lower floor radiation patch 20 is provided with excitation groove 22.
Be appreciated that by arranging described excitation groove 22 in described lower floor radiation patch 20, cut off described under
The current path on layer radiation patch 20 surface, makes electric current flow through and road around the trough rim complications of described excitation groove 22
Footpath is elongated, so makes the equivalent dimension of described lower floor radiation patch 20 relatively increase, and resonant frequency reduces,
To reduce the physical size of lower floor's radiation patch 20, so that described circular polarized antenna size reduces；Simultaneously
This excitation groove 22 is utilized to work with upper strata radiation patch 10 described in coupling excitation.In this embodiment, described
The thin seam that excitation groove 22 can also be disposed in described lower floor radiation patch 20.
Refer to Fig. 2, it is preferable that described excitation groove 22 is in cross.By arranging cross excitation groove
22 differ from the polarization degenerate mode of 90 ° to control the electric current on described lower floor radiation patch 20 surface with excitation phase,
Thus form circular polarization radiation or dual band operation.
Further, the dielectric constant of described upper strata radiation patch 10 is less than described lower floor radiation patch 20
Dielectric constant.It is appreciated that owing to the dielectric constant of described lower floor radiation patch 20 radiates more than described upper strata
The dielectric constant of paster 10 so that couple increasing between described lower floor radiation patch 20 with described ground plane 40
Greatly, energy storage also increases, consequently facilitating realize the coupling to described lower floor radiation patch 20.
Refer to Fig. 2, further, the area of described upper strata radiation patch 10 is less than described lower floor radiation patch
The area of sheet 20.
Refer to Fig. 2, further, one group of diagonal angle of described upper strata radiation patch 10 is provided with the first symmetry and cuts
Angle 15, one group of diagonal angle of described lower floor radiation patch 20 is provided with the second asymmetrical chamfer 25.It is appreciated that institute
State upper strata radiation patch 10 to use and arrange the first asymmetrical chamfer 15 described in a pair and carry out perturbation, to realize entelechy
Change；Radiation patch 20 employing of described lower floor arranges the second asymmetrical chamfer 25 described in a pair and carries out perturbation, with reality
Existing circular polarisation.Preferably, the angle of described first asymmetrical chamfer 15 and described second asymmetrical chamfer 25 is 45
± 10 °, such as, the angle of described first asymmetrical chamfer 15 and described second asymmetrical chamfer 25 is 45 °,
Certainly, described first asymmetrical chamfer 15 and described second asymmetrical chamfer 25 can be other angles, such as 35 °
To 55 °.
Preferably, described upper strata radiation patch 10 is identical with the shape of described lower floor radiation patch 20,
Such as, rectangle or other shapes it are.
Refer to Fig. 2, it is preferable that described first asymmetrical chamfer 15 is positioned at described second asymmetrical chamfer 25
Same angle direction.It is appreciated that described upper strata radiation patch 10 is right by arranging first in 45 ° of directions
Claim corner cut 15 to realize perturbation to produce two linear polarization electric field components the most orthogonal, and make the two amplitude phase
Right, phase contrast 90 ° and realize high frequency circular polarisation work；Similarly, described lower floor radiation patch 20 is passed through
Second asymmetrical chamfer 25 is set in 45 ° of directions and realizes perturbation to produce two the most orthogonal linear polarization electricity
Field component, and make the two amplitude relative, phase contrast 90 ° and realize the work of low frequency circular polarisation.
Refer to Fig. 2, it is preferable that described first asymmetrical chamfer 15 is mutual with described second asymmetrical chamfer 25
Orthogonal setting.It is appreciated that described upper strata radiation patch 10 is cut by arranging the first symmetry in 45 ° of directions
Angle 15 realizes perturbation to produce two linear polarization electric field components the most orthogonal, and makes the two amplitude relative,
Phase contrast 90 ° and realize high frequency circular polarisation work；Similarly, described lower floor radiation patch 20 is by 135 °
Direction arranges the second asymmetrical chamfer 25 and realizes perturbation to produce two linear polarization electric field components the most orthogonal,
And make the two amplitude relative, phase contrast 90 ° and realize the work of low frequency circular polarisation.Or, described upper strata radiates
Paster 10 realizes perturbation the most just to produce two by arranging the first asymmetrical chamfer 15 in 135 ° of directions
The linear polarization electric field component handed over, and make the two amplitude relative, phase contrast 90 ° and realize the work of high frequency circular polarisation；
Similarly, described lower floor radiation patch 20 realizes perturbation by arranging the second asymmetrical chamfer 25 in 45 ° of directions
To produce two linear polarization electric field components the most orthogonal, and make the two amplitude relative, phase contrast 90 ° and
Realize the work of low frequency circular polarisation.
Preferably, the angle of described first asymmetrical chamfer 15 and described second asymmetrical chamfer 25 is 45 °.?
In other embodiments, the angle of described first asymmetrical chamfer 15 and described second asymmetrical chamfer 25 can be it
His angle, or, described first asymmetrical chamfer 15 and described second asymmetrical chamfer 25 are circular arc corner cut.
Further, described substrate 30 is domed.Use the substrate of arch, do not change antenna lateral dimension
Under, improve the area of the radiation patch of antenna, thus improve radiance.
Fig. 4 is the voltage standing wave ratio curve chart of circular polarized antenna in Fig. 1, and Fig. 5 is circular polarized antenna in Fig. 1
Gain curve figure, Fig. 6 is that in Fig. 1, the axle of circular polarized antenna compares curve chart.In Fig. 4, transverse and longitudinal is frequency,
The longitudinal axis is voltage standing wave ratio, it can be seen that in two operating frequency intervals, voltage standing wave ratio is very
Close to 1, display antenna has good characteristic impedance.In Fig. 5, transverse axis is angle of radiation, and the longitudinal axis is for increasing
Benefit, it can be seen that at central authorities' radiation area, have the high-gain radiation effect of wider angle.Fig. 6
In, transverse and longitudinal is angle of radiation, and the longitudinal axis is axle ratio, and at zone line, axle less than 5, shows sky than uniform
Line is had good circular polarization characteristics at this angular range.In conjunction with Fig. 4 to Fig. 6 it can be seen that the present invention
The circular polarized antenna that embodiment provides can produce the frequency range of two circular polarisation, and can be by described first right
The control claiming corner cut 15 and described second asymmetrical chamfer 25 realizes the frequency range of two circular polarisation；It addition, this
Invention uses upper strata radiation patch 10 and the lower floor's radiation patch being arranged at relative two surfaces of described substrate 30
20, will described upper strata radiation patch 10 and described lower floor radiation patch 20 be arranged on same substrate 30,
There is simple in construction, the easy to make and feature of low cost.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (12)
1. a circular polarized antenna, it is characterised in that include upper strata radiation patch, lower floor's radiation patch, base
Plate and ground plane, described upper strata radiation patch and described lower floor radiation patch are respectively arranged at the two of described substrate
On apparent surface, described lower floor radiation patch is between described substrate and described ground plane；Described upper strata spoke
Penetrate paster and described lower floor radiation patch realize feed by coaxial feed pin and encourage described lower floor radiation patch,
Described lower floor radiation patch as the ground plane of described upper strata radiation patch and encourages institute by coupling feed way
State upper strata radiation patch.
2. circular polarized antenna as claimed in claim 1, it is characterised in that in described lower floor radiation patch
Heart position is provided with excitation groove.
3. circular polarized antenna as claimed in claim 2, it is characterised in that described excitation groove is cross.
4. circular polarized antenna as claimed in claim 1, it is characterised in that Jie of described upper strata radiation patch
Electric constant is less than the dielectric constant of described lower floor radiation patch.
5. circular polarized antenna as claimed in claim 1, it is characterised in that the face of described upper strata radiation patch
The long-pending area less than described lower floor radiation patch.
6. circular polarized antenna as claimed in claim 1, it is characterised in that the one of described upper strata radiation patch
Group diagonal angle is provided with the first asymmetrical chamfer, and one group of diagonal angle of described lower floor radiation patch is provided with the second asymmetrical chamfer.
7. circular polarized antenna as claimed in claim 6, it is characterised in that described first asymmetrical chamfer and institute
State the second asymmetrical chamfer and be positioned at same angle direction.
8. circular polarized antenna as claimed in claim 6, it is characterised in that described first asymmetrical chamfer and institute
State the second asymmetrical chamfer to be orthogonally set.
9. the circular polarized antenna as described in claim 6 to 8 any one, it is characterised in that described first
The angle of asymmetrical chamfer and described second asymmetrical chamfer is 35 ° to 55 °.
Circular polarized antenna the most according to claim 9, it is characterised in that the angle ranging from 45 °.
11. circular polarized antennas as claimed in claim 1, it is characterised in that described substrate is domed.
12. 1 kinds of communication equipments, it is characterised in that include the circular polarisation as described in claim 1-11 is arbitrary
Antenna.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055464.7A CN105990670B (en) | 2015-01-30 | 2015-01-30 | Circularly polarized antenna and communication equipment |
| PCT/CN2016/072569 WO2016119725A1 (en) | 2015-01-30 | 2016-01-28 | Antenna, antenna system and communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055464.7A CN105990670B (en) | 2015-01-30 | 2015-01-30 | Circularly polarized antenna and communication equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105990670A true CN105990670A (en) | 2016-10-05 |
| CN105990670B CN105990670B (en) | 2021-05-07 |
Family
ID=57036997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510055464.7A Active CN105990670B (en) | 2015-01-30 | 2015-01-30 | Circularly polarized antenna and communication equipment |
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| Country | Link |
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| CN (1) | CN105990670B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286071A (en) * | 2018-10-25 | 2019-01-29 | 广东曼克维通信科技有限公司 | Compact dual-frequency radio frequency recognition circular polarization antenna |
| CN110233360A (en) * | 2019-04-23 | 2019-09-13 | 中天宽带技术有限公司 | A kind of dual-band antenna and electronic equipment |
| CN110718770A (en) * | 2019-09-29 | 2020-01-21 | 山西大学 | Full-polarization reconfigurable MIMO antenna |
| CN112467353A (en) * | 2020-11-20 | 2021-03-09 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN112751189A (en) * | 2020-12-28 | 2021-05-04 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN112952340A (en) * | 2019-11-26 | 2021-06-11 | 华为技术有限公司 | Antenna structure, circuit board with antenna structure and communication equipment |
| CN114824772A (en) * | 2022-05-06 | 2022-07-29 | 嘉兴金领电子有限公司 | Light circularly polarized antenna and mounting method thereof |
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| CN203883115U (en) * | 2013-12-12 | 2014-10-15 | 深圳光启创新技术有限公司 | Circularly-polarized antenna, circularly-polarized antenna system, and communication equipment |
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| EP1650830A1 (en) * | 2004-10-21 | 2006-04-26 | Electronics and Telecommunications Research Institute | Circularly polarized patch antenna using metal patch and transceiving array antenna using the same |
| CN102280699A (en) * | 2011-05-04 | 2011-12-14 | 电子科技大学 | LTCC (Low Temperature Co-fired Ceramic) laminated coupled feed circular-polarized micro-strip patch antenna |
| CN102610909A (en) * | 2012-03-01 | 2012-07-25 | 西安电子科技大学 | Single-fed dual-bandwidth wave beam circular polarization antenna |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286071A (en) * | 2018-10-25 | 2019-01-29 | 广东曼克维通信科技有限公司 | Compact dual-frequency radio frequency recognition circular polarization antenna |
| CN110233360A (en) * | 2019-04-23 | 2019-09-13 | 中天宽带技术有限公司 | A kind of dual-band antenna and electronic equipment |
| CN110718770A (en) * | 2019-09-29 | 2020-01-21 | 山西大学 | Full-polarization reconfigurable MIMO antenna |
| CN112952340A (en) * | 2019-11-26 | 2021-06-11 | 华为技术有限公司 | Antenna structure, circuit board with antenna structure and communication equipment |
| CN112467353A (en) * | 2020-11-20 | 2021-03-09 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN112467353B (en) * | 2020-11-20 | 2023-12-08 | Oppo广东移动通信有限公司 | Antenna device and electronic equipment |
| CN112751189A (en) * | 2020-12-28 | 2021-05-04 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN114824772A (en) * | 2022-05-06 | 2022-07-29 | 嘉兴金领电子有限公司 | Light circularly polarized antenna and mounting method thereof |
| CN114824772B (en) * | 2022-05-06 | 2024-03-26 | 嘉兴金领电子有限公司 | Light circularly polarized antenna and mounting method thereof |
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| Publication number | Publication date |
|---|---|
| CN105990670B (en) | 2021-05-07 |
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