CN107317099A - A kind of multiband circular polarisation wideband cross dipole antenna - Google Patents
A kind of multiband circular polarisation wideband cross dipole antenna Download PDFInfo
- Publication number
- CN107317099A CN107317099A CN201710188313.8A CN201710188313A CN107317099A CN 107317099 A CN107317099 A CN 107317099A CN 201710188313 A CN201710188313 A CN 201710188313A CN 107317099 A CN107317099 A CN 107317099A
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- Prior art keywords
- dipole
- arm
- minor matters
- radiation minor
- dipole arm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The multiband circular polarisation wideband cross dipole antenna that the present invention is provided is on the basis of conventional plane printing crossed dipoles, by improving the shape of dipole arm, introducing extra dipole radiation minor matters, and the method spiraled to minor matters using bending and bending realizes the effect for reducing the overall size of antenna, under conditions of other performances are not weakened, antenna miniaturization, double frequency and broad in band are realized, more excellent impedance matching effect and compactedness is reached.
Description
Technical field
The present invention relates to antenna communication field, more particularly, to a kind of multiband circular polarisation wideband crossed dipoles day
Line.
Background technology
Arrival with the mobile communication 4G epoch and striding forward to the 5G epoch, mobile communication, microwave energy collect and
In the field of transmission, cross dipole antenna is a kind of antenna form being widely adopted.Because dipole is by two conductors
Composition, it is in apex drive, and total length is about half-wavelength, is the elementary cell of cross dipole antenna.Multiple dipole triads
It is combined, by controlling the relation that the amplitude proportional of electric current, phase and locus are put on dipole, it is possible to will be many
Dipole antenna is applied to the applied fields such as antenna for base station, circular polarized antenna, mimo antenna and microwave wireless collection of energy and transmission
Jing Zhong.
For circular polarized antenna, it is desirable to which antenna can realize low axle ratio in wide angle, so no matter be in any angle, day
Line can receive signal well.For how to widen frequency-axial ratio bandwidth, many scholars have carried out substantial amounts of research.With
Exist while a variety of communication standards of Modern Communication System or standard, the requirement to antenna develops to multifrequency direction, therefore
A kind of easy realization, the cross dipole antenna of multiband is designed to be significant.
The content of the invention
The present invention justifies to solve the defect that the antenna that above prior art is provided only has single band there is provided a kind of multiband
Polarize wideband cross dipole antenna.
To realize above goal of the invention, the technical scheme of use is：
A kind of multiband circular polarisation wideband cross dipole antenna, including medium substrate, be arranged on medium substrate
One dipole, the second dipole and coaxial line；First dipole includes the first dipole arm and the second dipole arm, described first
Dipole arm is arranged on the upper surface of medium substrate, and the second dipole arm is arranged on the lower surface of medium substrate, and first is even
Extremely sub- arm and the second dipole arm are set on the same line；Second dipole includes the 3rd dipole arm and the 4th dipole
Sub- arm, the 3rd dipole arm is arranged on the upper surface of medium substrate, and the 4th dipole arm is arranged under medium substrate
On surface, the 3rd dipole arm is set on the same line with the 4th dipole arm；First dipole arm, the second dipole
Straight line formed by arm is vertical with straight line formed by the 3rd dipole arm, the 4th dipole arm；First dipole arm and the 3rd
Dipole arm is connected, and the second dipole arm is connected with the 4th dipole arm, and first dipole arm, the 3rd dipole arm pass through
Coaxial line is connected with the second dipole arm, the 4th dipole arm, and first dipole arm is with the 3rd dipole arm away from both
The transverse cross-sectional shape of the side of junction is inner concavity, and second dipole arm is connected with the 4th dipole arm away from both
The transverse cross-sectional shape of the side at place is inner concavity.
In such scheme, the first dipole arm and the horizontal section shape of side of the 3rd dipole arm away from both junctions
Shape is inner concavity, and second dipole arm and the transverse cross-sectional shape of side of the 4th dipole arm away from both junctions are
Inner concavity.Increase the effective radiating area of antenna, extend the effective flowing path of electric current, thus have two resonant frequencies and
Broader frequency band.Therefore the width of the frequency band for the antenna that the present invention is provided also is improved compared with prior art.
Preferably, between first dipole arm and the 3rd dipole arm, the second dipole arm and the 4th dipole arm
It is attached by 3/4 annulus, the ring width of 3/4 annulus, which passes through, to be gradually reduced.3/4 annulus is primarily served herein
The effect of delay line is bent, bending delay line provides orthorhombic phase potential difference, so the impedance matching bandwidth of antenna is higher, and antenna
There are circular polarization characteristics.
Preferably, the coaxial line includes inner wire and outer conductor, and wherein inner wire passes through even with first after medium substrate
Extremely sub- arm, the connection of the 3rd dipole arm, outer conductor are connected with the second dipole arm, the 4th dipole arm.
Preferably, the cross dipole antenna also includes the first dipole radiation for being arranged on medium substrate upper surface
Minor matters, the second dipole radiation minor matters for being arranged on medium substrate upper surface, the 3rd dipole for being arranged on medium substrate lower surface
Son radiation minor matters, the 4th dipole radiation minor matters for being arranged on medium substrate lower surface；First dipole radiation minor matters and the 3rd
Dipole radiation minor matters are set on the same line, and the second dipole radiation minor matters are arranged on together with the 4th dipole radiation minor matters
On one straight line, straight line and the second dipole radiation minor matters where the first dipole radiation minor matters, the 3rd dipole radiation minor matters,
Straight line where 4th dipole radiation minor matters is vertical, first dipole radiation minor matters, the second dipole radiation minor matters with
First dipole arm, the connection of the 3rd dipole arm, the 3rd dipole radiation minor matters, the 4th dipole radiation minor matters and second
Dipole arm, the connection of the 4th dipole arm.First dipole radiation minor matters and the 3rd dipole radiation minor matters, the second dipole
Son radiation minor matters constitute other a pair of cross dipole with the 4th dipole radiation minor matters, may be such that antenna in lower frequency range
Also it can realize that impedance matching, i.e. antenna can also work in lower frequency range.Therefore the antenna that the present invention is provided has can be more
The characteristic of band operation.
Preferably, the first dipole radiation minor matters of the setting, the second dipole radiation minor matters, the 3rd dipole radiation
Minor matters and the 4th dipole radiation minor matters pass through bending process.To realize the effect for reducing antenna area, so as to realize antenna
Miniaturization.
Preferably, first dipole radiation minor matters, the second dipole radiation minor matters, the 3rd dipole radiation minor matters and
4th dipole radiation minor matters are arranged to bend spiral structure.The area of antenna can further be reduced, antenna is preferably realized
Miniaturization and compactedness.
Preferably, first dipole arm and the horizontal section shape of side of the 3rd dipole arm away from both junctions
Shape is the triangular shape of indent；Second dipole arm and the horizontal section of side of the 4th dipole arm away from both junctions
It is shaped as the triangular shape of indent.
Preferably, the medium substrate is FR-4 epoxy glass-fiber-fabric medium substrates.
Preferably, the thickness of the FR-4 epoxies glass-fiber-fabric medium substrate is 2mm, and specification is 48mm*48mm, dielectric coefficient
For 4.7, loss angle tangent is 0.01.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is on the basis of conventional plane printing crossed dipoles, by the shape, the introducing volume that improve dipole arm
Outer dipole radiation minor matters, and the method spiraled to minor matters using bending and bending realizes the effect for reducing the overall size of antenna
Really, under conditions of other performances are not weakened, antenna miniaturization, double frequency and broad in band are realized, more excellent impedance is reached
With effect and compactedness.
Brief description of the drawings
Fig. 1 is the structural representation of the antenna of embodiment 1.
Emulation and test comparison figure of the Fig. 2 for the antenna reflection coefficient S11 of the antenna of embodiment 1.
Fig. 3 is the structural representation of the antenna of embodiment 2.
Emulation and test comparison figure of the Fig. 4 for the antenna reflection coefficient S11 of the antenna of embodiment 2.
Fig. 5 is the structural representation of the antenna of embodiment 3.
Fig. 6 is the structural representation of the antenna of embodiment 4.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；
Below in conjunction with drawings and examples, the present invention is further elaborated.
Embodiment 1
As shown in figure 1, a kind of multiband circular polarisation wideband cross dipole antenna, including medium substrate 1, it is arranged on medium
The first dipole, the second dipole and coaxial line on substrate 1；First dipole includes the first dipole arm 2 and the second dipole
Sub- arm 3, first dipole arm 2 is arranged on the upper surface of medium substrate 1, and the second dipole arm 3 is arranged on medium substrate 1
Lower surface on, the first dipole arm 2 and the second dipole arm 3 are set on the same line；Second dipole includes the
Three dipole arms 4 and the 4th dipole arm 5, the 3rd dipole arm 4 are arranged on the upper surface of medium substrate 1, and the 4th is even
Extremely sub- arm 5 is arranged on the lower surface of medium substrate 1, and the 3rd dipole arm 4 and the 4th dipole arm 5 are arranged on same straight line
On；Straight line formed by first dipole arm 2, the second dipole arm 3 and the 3rd dipole arm 4, the institute of the 4th dipole arm 5 into
Straight line it is vertical；First dipole arm 2 is connected with the 3rd dipole arm 4, the second dipole arm 3 and the 4th dipole arm 5
Connection, first dipole arm 2, the 3rd dipole arm 4 are connected by coaxial line with the second dipole arm 3, the 4th dipole arm 5
Connect, the transverse cross-sectional shape of the side of the dipole arm 4 away from both junctions of the first dipole arm 2 and the 3rd is inner concavity
6, the transverse cross-sectional shape of the side of the dipole arm 5 away from both junctions of the second dipole arm 3 and the 4th is inner concavity
6。
In such scheme, the horizontal section of the first dipole arm 2 and the 3rd side of the dipole arm 4 away from both junctions
It is shaped as inner concavity 6, the horizontal section of the side of the dipole arm 5 away from both junctions of the second dipole arm 3 and the 4th
It is shaped as inner concavity 6.Increase the effective radiating area of antenna, extend the effective flowing path of electric current, thus have two it is humorous
Vibration frequency and broader frequency band.Therefore the width of the frequency band for the antenna that the present invention is provided also is carried compared with prior art
It is high.
In specific implementation process, first dipole arm 2 and the 3rd dipole arm 4, the second dipole arm 3 and
It is attached between four dipole arms 5 by 3/4 annulus 7, the ring width of 3/4 annulus 7, which passes through, to be gradually reduced.3/4
Annulus 7 primarily serves the effect of bending delay line herein, and bending delay line provides orthorhombic phase potential difference, so the impedance of antenna
It is higher with bandwidth, and antenna has circular polarization characteristics.
In specific implementation process, the coaxial line includes inner wire and outer conductor, and wherein inner wire passes through medium base
It is connected after plate 1 with the first dipole arm 2, the 3rd dipole arm 4, outer conductor connects with the second dipole arm 3, the 4th dipole arm 5
Connect.
In the present embodiment, antenna is printed on thickness for 2mm, and dielectric coefficient is 4.7, and loss angle tangent is 0.01 FR-4 epoxies
On glass-fiber-fabric medium substrate 1.The specification of medium substrate 1 is 48mm*48mm.Printed respectively on the upper surface of medium substrate 1, lower surface
There are two dipole arms with 90 ° of phase differences, the thickness of two dipole arms is the half of substrate thickness.The length of dipole arm
About 20mm.There are 90 ° of phase differences respectively between two dipole arms in two dipole arms and lower surface on upper surface.
Emulation and test comparison figure of the Fig. 2 for the antenna reflection coefficient S11 of the antenna of the present embodiment, it can be seen that this implementation
Example provide antenna there is preferable impedance matching effect, impedance bandwidth about from 1.6GHz to 3GHz, working frequency range comprising 3G,
Multiple frequency ranges such as 4G communications and ISM (Industrial Scientific Medical), i.e., the performance of the antenna of such a form is complete
Actual requirement can be met entirely.
Embodiment 2
The present embodiment is on the basis of embodiment 1, and the scheme to embodiment 1 has carried out further improvement, such as Fig. 3 institutes
Show, be embodied in the cross dipole antenna and also include the first dipole radiation for being arranged on the upper surface of medium substrate 1
Minor matters 8, the second dipole radiation minor matters 9 for being arranged on the upper surface of medium substrate 1, it is arranged on the 3rd of the lower surface of medium substrate 1
Dipole radiation minor matters 10, the 4th dipole radiation minor matters 11 for being arranged on the lower surface of medium substrate 1；First dipole radiation branch
The dipole radiation minor matters 10 of section 8 and the 3rd are set on the same line, the second dipole radiation minor matters 9 and the 4th dipole radiation
Minor matters 11 are set on the same line, straight line where the first dipole radiation minor matters 8, the 3rd dipole radiation minor matters 10 and the
Straight line where two dipole radiation minor matters 9, the 4th dipole radiation minor matters 11 is vertical, first dipole radiation minor matters 8,
Second dipole radiation minor matters 9 are connected with the first dipole arm 2, the 3rd dipole arm 4, the 3rd dipole radiation minor matters
10th, the 4th dipole radiation minor matters 11 are connected 5 with the second dipole arm 3, the 4th dipole arm.The first dipole radiation branch
The dipole radiation minor matters 10 of section 8 and the 3rd, the second dipole radiation minor matters 9 and the 4th dipole radiation minor matters 11 constitute other
A pair of cross dipole, may be such that antenna can also realize that impedance matching, i.e. antenna can also be worked in lower frequency range lower
Frequency range.Therefore the antenna that the present invention is provided has the characteristic that can be worked in multiband.
In this example, the antenna is printed on thickness for 2mm, and dielectric coefficient is 4.7, and loss angle tangent is 0.01 FR-4 rings
On oxygen glass-fiber-fabric medium substrate.Medium substrate specification is 95mm*95mm, and the thickness of dipole arm is about 46mm, and long is about 18mm.
Emulation and test comparison figure of the Fig. 4 for the antenna reflection coefficient S11 of the antenna of the present embodiment, it can be seen that Ci Zhongtian
Line has more GSM900 low frequency operation bandwidth than the antenna of embodiment 1, i.e., the performance of the antenna of such a form can be met completely
Actual requirement.
Embodiment 3
Antenna in the present embodiment is the further improvement done on the basis of the antenna of embodiment 2, as shown in figure 5, tool
Body is embodied in the first dipole radiation minor matters to antenna, the second dipole radiation minor matters, the 3rd dipole radiation minor matters, the 4th
Dipole radiation minor matters carry out bending process, to reach the purpose for reducing antenna area under conditions of antenna performance is not influenceed,
So as to realize the miniaturization of antenna.Prove that such a antenna can also have preferable performance after emulation experiment.
Embodiment 4
Antenna in the present embodiment is the further improvement done on the basis of the antenna of embodiment 2, as shown in fig. 6, tool
Body is embodied in the first dipole radiation minor matters, the second dipole radiation minor matters, the 3rd dipole radiation minor matters, the 4th dipole
Radiation minor matters are modified to bend spiral structure, further reduce the area of antenna, preferably realize the miniaturization of antenna and compact
Property.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Any modifications, equivalent substitutions and improvements made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (9)
1. a kind of multiband circular polarisation wideband cross dipole antenna, including medium substrate, be arranged on medium substrate first
Dipole, the second dipole and coaxial line；First dipole includes the first dipole arm and the second dipole arm, and described first is even
Extremely sub- arm is arranged on the upper surface of medium substrate, and the second dipole arm is arranged on the lower surface of medium substrate, the first dipole
Sub- arm and the second dipole arm are set on the same line；Second dipole includes the 3rd dipole arm and the 4th dipole
Arm, the 3rd dipole arm is arranged on the upper surface of medium substrate, and the 4th dipole arm is arranged on the following table of medium substrate
On face, the 3rd dipole arm is set on the same line with the 4th dipole arm；First dipole arm, the second dipole arm
Formed straight line is vertical with straight line formed by the 3rd dipole arm, the 4th dipole arm；First dipole arm is even with the 3rd
Extremely sub- arm connection, the second dipole arm is connected with the 4th dipole arm, and first dipole arm, the 3rd dipole arm pass through same
Axis is connected with the second dipole arm, the 4th dipole arm, it is characterised in that：First dipole arm and the 3rd dipole arm
The transverse cross-sectional shape of side away from both junctions is inner concavity, and second dipole arm and the 4th dipole arm are remote
The transverse cross-sectional shape of the side of both junctions is inner concavity.
2. multiband circular polarisation wideband cross dipole antenna according to claim 1, it is characterised in that：Described first is even
It is attached between extremely sub- arm and the 3rd dipole arm, the second dipole arm and the 4th dipole arm by 3/4 annulus, 3/4 circle
The ring width of ring, which passes through, to be gradually reduced.
3. multiband circular polarisation wideband cross dipole antenna according to claim 1, it is characterised in that：The coaxial line
Including inner wire and outer conductor, wherein inner wire is connected after passing through medium substrate with the first dipole arm, the 3rd dipole arm, outside
Conductor is connected with the second dipole arm, the 4th dipole arm.
4. multiband circular polarisation wideband cross dipole antenna according to claim 1, it is characterised in that：It is described to intersect occasionally
Pole sub-antenna, which also includes, to be arranged on the first dipole radiation minor matters of medium substrate upper surface, is arranged on medium substrate upper surface
The second dipole radiation minor matters, be arranged on the 3rd dipole radiation minor matters of medium substrate lower surface, be arranged on medium substrate
4th dipole radiation minor matters of lower surface；First dipole radiation minor matters are arranged on always with the 3rd dipole radiation minor matters
On line, the second dipole radiation minor matters are set on the same line with the 4th dipole radiation minor matters, the first dipole radiation branch
Where straight line and the second dipole radiation minor matters, the 4th dipole radiation minor matters where section, the 3rd dipole radiation minor matters
Straight line is vertical, first dipole radiation minor matters, the second dipole radiation minor matters and the first dipole arm, the 3rd dipole arm
Connection, the 3rd dipole radiation minor matters, the 4th dipole radiation minor matters connect with the second dipole arm, the 4th dipole arm
Connect.
5. multiband circular polarisation wideband cross dipole antenna according to claim 4, it is characterised in that：The setting
First dipole radiation minor matters, the second dipole radiation minor matters, the 3rd dipole radiation minor matters and the 4th dipole radiation minor matters
By bending process.
6. multiband circular polarisation wideband cross dipole antenna according to claim 4, it is characterised in that：Described first is even
Extremely son radiation minor matters, the second dipole radiation minor matters, the 3rd dipole radiation minor matters and the 4th dipole radiation minor matters are arranged to
Bend spiral structure.
7. multiband circular polarisation wideband cross dipole antenna according to claim 1, it is characterised in that：Described first is even
The transverse cross-sectional shape of the side of extremely sub- arm and the 3rd dipole arm away from both junctions is the triangular shape of indent；Described second
Dipole arm and the triangular shape that the transverse cross-sectional shape of side of the 4th dipole arm away from both junctions is indent.
8. the multiband circular polarisation wideband cross dipole antenna according to any one of claim 1~7, it is characterised in that：
The medium substrate is FR-4 epoxy glass-fiber-fabric medium substrates.
9. multiband circular polarisation wideband cross dipole antenna according to claim 8, it is characterised in that：The FR-4 rings
The thickness of oxygen glass-fiber-fabric medium substrate is 2mm, and specification is 48mm*48mm, and dielectric coefficient is 4.7, and loss angle tangent is 0.01.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710188313.8A CN107317099A (en) | 2017-03-27 | 2017-03-27 | A kind of multiband circular polarisation wideband cross dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710188313.8A CN107317099A (en) | 2017-03-27 | 2017-03-27 | A kind of multiband circular polarisation wideband cross dipole antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107317099A true CN107317099A (en) | 2017-11-03 |
Family
ID=60185040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710188313.8A Pending CN107317099A (en) | 2017-03-27 | 2017-03-27 | A kind of multiband circular polarisation wideband cross dipole antenna |
Country Status (1)
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|---|---|
| CN (1) | CN107317099A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493595A (en) * | 2018-02-27 | 2018-09-04 | 西安电子科技大学 | A kind of wideband directional circular polarized antenna applied in wireless communication system |
| CN109378577A (en) * | 2018-08-08 | 2019-02-22 | 西安电子科技大学 | A kind of miniaturization broadband cross dipole antenna |
| CN111009738A (en) * | 2018-10-04 | 2020-04-14 | 和硕联合科技股份有限公司 | Antenna device |
| CN111129762A (en) * | 2020-02-20 | 2020-05-08 | 常州仁千电气科技股份有限公司 | Circular polarized antenna with planar structure |
| CN112751158A (en) * | 2019-10-31 | 2021-05-04 | 华为技术有限公司 | Antenna assembly and communication equipment |
| CN113594715A (en) * | 2021-08-02 | 2021-11-02 | 北京星英联微波科技有限责任公司 | Dual-frequency bidirectional circularly polarized dipole array antenna |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493595A (en) * | 2018-02-27 | 2018-09-04 | 西安电子科技大学 | A kind of wideband directional circular polarized antenna applied in wireless communication system |
| CN108493595B (en) * | 2018-02-27 | 2020-01-21 | 西安电子科技大学 | Broadband directional circularly polarized antenna applied to wireless communication system |
| CN109378577A (en) * | 2018-08-08 | 2019-02-22 | 西安电子科技大学 | A kind of miniaturization broadband cross dipole antenna |
| CN111009738A (en) * | 2018-10-04 | 2020-04-14 | 和硕联合科技股份有限公司 | Antenna device |
| CN111009738B (en) * | 2018-10-04 | 2021-05-07 | 和硕联合科技股份有限公司 | Antenna device |
| CN112751158A (en) * | 2019-10-31 | 2021-05-04 | 华为技术有限公司 | Antenna assembly and communication equipment |
| CN112751158B (en) * | 2019-10-31 | 2022-05-17 | 华为技术有限公司 | Antenna assembly and communication equipment |
| CN111129762A (en) * | 2020-02-20 | 2020-05-08 | 常州仁千电气科技股份有限公司 | Circular polarized antenna with planar structure |
| CN111129762B (en) * | 2020-02-20 | 2022-12-27 | 常州仁千电气科技股份有限公司 | Circular polarized antenna with planar structure |
| CN113594715A (en) * | 2021-08-02 | 2021-11-02 | 北京星英联微波科技有限责任公司 | Dual-frequency bidirectional circularly polarized dipole array antenna |
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Application publication date: 20171103 |
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