CN107437664A - A kind of trap characteristic circular polarised array antenna with loading artificial magnetic conductor - Google Patents
A kind of trap characteristic circular polarised array antenna with loading artificial magnetic conductor Download PDFInfo
- Publication number
- CN107437664A CN107437664A CN201610358251.6A CN201610358251A CN107437664A CN 107437664 A CN107437664 A CN 107437664A CN 201610358251 A CN201610358251 A CN 201610358251A CN 107437664 A CN107437664 A CN 107437664A
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- medium substrate
- antenna
- magnetic conductor
- artificial magnetic
- array antenna
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention proposes a kind of trap characteristic circular polarised array antenna with loading artificial magnetic conductor, for solving the technical problem of the low parabola of existing circular polarized antenna and trap；Including radiating element, L-type sheet metal, medium substrate, medium substrate, metal floor, rectangular patch, power splitter, the laterally homogeneous arrangement spaced apart of four radiating elements, and the microstrip-fed both sides of four L-type sheet metals are printed with two stepped impedance resonant elements of specular respectively, for realizing trap characteristic, 7 four L-type sheet metals of power splitter are connected.The present invention is used to solve the problems, such as that the antenna of existing loading artificial magnetic conductor can not to realize the isolation of signal and with the ground paraboloidal technique after trap.
Description
Technical field
The invention belongs to antenna technical field, is related to a kind of circular polarized antenna, and in particular to one kind, which has, loads artificial magnetic
The trap characteristic circular polarised array antenna of conductor, transmitting and receiving available for unlimited signal in mobile radio system.
Background technology
In radio systems, base station can regard a radio modem as, be responsible for connecing for movable signal as sending and receiving stations
Processing is sent in sending and receiving.Antenna for base station is the important component of base station.Traditional antenna for base station is all linear polarized antenna, including is hung down
Straight polarization antenna for base station, vertical-horizontal dual polarized antenna, ± 45 ° of Bipolarization antenna for base station.When signal is via linear polarization day
, it is necessary to which the matching that polarizes, could realize preferable reception when line sends and receives.Electromagnetic wave is when propagating, it may occur that anti-
Penetrate, diffraction and scattering process, its polarization is changed, and the position of the reception antenna in mobile communication is uncertain, is led
Transmitting antenna is caused to be lost with reception antenna caused by polarization mismatch.Circular polarized antenna（Circularly Polarized
Antenna）Transmitting antenna can be avoided to be lost with reception antenna caused by the mismatch that polarizes.Polarization of electromagnetic wave can be divided into line pole
Change, elliptic polarization and the class of circular polarisation three, wherein circular polarisation can be as the special circumstances of elliptic polarization.The equal decomposable asymmetric choice net of any polarized wave
For two oppositely oriented circularly polarised waves, for line polarization wave, it is equal to be decomposed into two amplitudes, but rotation direction
Opposite circularly polarised wave, therefore, the electromagnetic wave arbitrarily to polarize can be received by circular polarized antenna；Conversely, circularly polarised wave can also
Two orthogonal line polarization waves are decomposed into, the electromagnetic wave of circular polarized antenna transmitting can also be received by any poliarizing antenna, in entelechy
Change in base station system, communication quality can not be influenceed by transmitting antenna and reception antenna disposing way, can avoid polarization mismatch.
In addition, if antenna radiates left-hand circular polarization ripple, left-hand circular polarization ripple is only received without receiving right-handed circular polarization
Ripple;Vice versa, and this is referred to as the rotation direction orthogonality of circular polarized antenna, can be utilized in the polarity diversity work of mobile communication
The rotation direction orthogonality of circular polarized antenna improves message capacity.Circularly polarised wave incides symmetric targets (such as plane, sphere）When, rotation
To taking a turn for the worse, circular polarized antenna is applied to that misty rain interference and confrontation multipath reflection can be suppressed in mobile communication, realizes that frequency is answered
With, increase power system capacity, raising communication quality.And for the miniaturization of antenna, Meta Materials artificial magnetic conductor can be utilized
（AMC）Reduce antenna parabola, also make antenna more attractive in appearance, however, for fall in its working frequency range other it is useless or
Person's unwanted signals, antenna can also carry out indiscriminate radiation or reception.In some cases, such case can launch antenna
System causes larger interference.
In order to suppress other useless or unwanted signals interference, it usually needs add bandstop filter in broadband system
These narrow-band signals are filtered, this not only adds the complexity of system, also increase cost.Generally we can be in broadband day
Trap structure is introduced in line so that have larger reflectance factor in the frequency range of those narrowband systems, so as to reach the purpose of filtering.
Current trap structure mainly has three types：（1）Gap of different shapes is etched in radiation patch or floor；（2）In day
Parasitic minor matters are introduced in cable architecture；（3）SIR bandstop filter is loaded in radiation patch；Wherein introduce in the antenna structure
Parasitic minor matters and the bandstop filter that SIR is loaded in radiation patch, because its is complicated, less use is the most frequently used at present
Be the structure type that gap of different shapes is etched in radiation patch or floor.
Domestic and international prior art is also not directed to the trap characteristic research carried out in circular polarisation, but the technology ceiling mount antenna is deposited
In following deficiency:1st, such as document Jian Ren*, Bo Wang, and Yingzeng Yin " Low Profile Dual-
Polarized Circular Patch Antenna with an AMC Reflector"Progress In Electromagnetics Research Letters, Vol. 47, 131–137, 2014, including radiating element, feed
Line, AMC reflecting plates, the bandwidth of operation of antenna are 26%, and axial ratio bandwidth 26%, parabola highly for 0.125 λ but has the drawback that
Parabola height is higher, and can not realize trap characteristic.
The content of the invention
The defects of it is an object of the invention to overcome above-mentioned prior art to exist, it is proposed that there is loading artificial magnetic conductor
Trap characteristic circular polarised array antenna, isolation and the tool that can not realize signal for solving the antenna of existing loading artificial magnetic conductor
There is the ground paraboloidal technique problem after trap.
To achieve the above object, the technical solution adopted by the present invention is：A kind of trap spy with loading artificial magnetic conductor
Property circular polarised array antenna, including radiating element, L-type sheet metal, first medium substrate, second medium substrate, metal floor, square
Shape paster, power splitter, described rectangular patch are multiple and are uniformly attached on second medium substrate, described second medium substrate
Lower surface be attached on metal floor, described first medium substrate is four, four laterally homogeneous rows of first medium substrate
The top of the second rectangular patch is listed in, froth bed is filled between described first medium substrate and the second rectangular patch；It is described
Radiating element be four, and be fitted in the top of four first medium substrates respectively, described L-type sheet metal is four, and
The lower section of first medium substrate is fitted in respectively, and the both sides of four L-type sheet metals are printed with two stepped impedance resonance respectively
Unit, for realizing trap characteristic, the power splitter is located at the top of first medium substrate and is connected with L-type sheet metal.
Described stepped impedance resonant element is regular hexagon, and is formed by micro-strip stairstepping, by different in width and not
Microstrip line with length forms.
The distance between four radiating elements are 13-17mm.
The distance between four radiating elements are 15mm.
The trap characteristic circular polarised array antenna parabola of the artificial magnetic conductor of loading is highly 0.1 λ, element antenna entelechy
It is 31% to change relative bandwidth, and the relative bandwidth of array circular-polarization antenna is 22%.
The present invention compared with prior art, has the following advantages that：
1st, the present invention is due to being provided with two gradation type ladders in specular in the microstrip-fed line both sides of L-type metal patch
The resonant slot of the back-shaped structure of impedance hexagon.
2nd, the present invention uses artificial magnetic conductor（AMC）Reflecting plate, it is parabola height with loading (AMC) technology in the prior art
Degree is reduced to 0.125 λ and compared, and parabola height reduction is 0.1 λ, and the individual antenna unit shaft for loading AMC is than relative bandwidth
31.5%, load artificial magnetic conductor（AMC）Circular polarised array antenna axle than relative bandwidth be 22%.
Brief description of the drawings
Fig. 1 is the overall structure figure front view of the embodiment of the present invention；
Fig. 2 is the Chinese first medium substrate of the present invention and L-type sheet metal composition structural representation；
Fig. 3 is that invention second medium substrate forms structural representation with metal substrate, rectangular patch；
Fig. 4 is the cross section structure schematic diagram of the present invention；
Fig. 5 is the stationary wave characteristic analogous diagram of the embodiment of the present invention；
Fig. 6 is the axle ratio characteristic analogous diagram of the embodiment of the present invention；
Fig. 7 is the 6GHz antenna patterns of the embodiment of the present invention;
Fig. 8 is the 8GHz antenna patterns of the embodiment of the present invention;
In figure：1. radiating element；2.L type sheet metals；3. first medium substrate；4. second medium substrate；5. metal floor；6. square
Shape paster；7. power splitter；8. stepped impedance resonant element；9. froth bed.
Embodiment
Below in conjunction with the drawings and specific embodiments, the purpose of the present invention, technical scheme and technique effect are further retouched
State, it should be appreciated that specific embodiment described herein is only used for explanation of the invention, is not intended as limitation of the present invention.
A kind of trap characteristic circular polarised array antenna with loading artificial magnetic conductor as shown in Figure 1,2,3, 4, including
Radiating element 1, L-type sheet metal 2, first medium substrate 3, second medium substrate 4, metal floor 5, rectangular patch 6, power splitter 7,
Described rectangular patch 6 is multiple and is uniformly attached on second medium substrate 4 that the lower surface of described second medium substrate 4 is pasted
On metal floor 5, described first medium substrate 3 is four, and four first medium substrates 3 are laterally homogeneous is arranged in second for this
The top of rectangular patch 6, froth bed 9 is filled between the described rectangular patch 6 of first medium substrate 3 and second；Described spoke
It is four to penetrate unit 1, and is fitted in the top of four first medium substrates 3 respectively, and described L-type sheet metal 2 is four, and point
The lower section of first medium substrate 3 is not fitted in, and the both sides of four L-type sheet metals 2 are printed with two stepped impedance resonance respectively
Unit 8, for realizing trap characteristic, the power splitter 7 is located at the top of first medium substrate 1 and is connected with L-type sheet metal 2.
The present invention is separated by a certain distance composition antenna array including four identical antenna elements, and antenna element has radiating element
1, L-type sheet metal 2 and first medium substrate 3 form, and the L-type sheet metal 2 forms 90 degree of phase shifts of difference to realize antenna
Circular polarization characteristics, and interacted with radiating element 1, it is humorous that the microstrip-fed both sides of L-type are printed with two stepped impedances respectively
Shake unit 8, for realizing trap characteristic.One point of four power splitter 7 is connected with L-type metal patch 2, and antenna array is provided below second
The artificial magnetic conductor that medium substrate 4, metal floor 5 and rectangular patch 6 form（AMC）Reflecting plate, to realize the low throwing of antenna
Object plane characteristic.
Below in conjunction with emulation experiment, the technique effect of the present invention is described further：
1st, simulated conditions and content
1.1 utilize business simulation software（High Frequency Structure Simulator HFSS ver. 15) to S
Parameter carries out simulation calculation in the range of 5.5-8GHz, as a result as shown in Figure 3.
1.2 utilize business simulation software（High Frequency Structure Simulator HFSS ver. 15)
Simulation calculation is carried out at 6GHz and 7.5GHz to the present embodiment far field radiation pattern, embodiment circular polarised array antenna is in E
The antenna pattern in face and H faces is as shown in Figure 7.
2. simulation result
Referring to Fig. 6, the frequency range of voltage standing wave ratio VSWR≤2 of present invention loading artificial magnetic conductor circular polarised array antenna exists
5.58-8GHz, its trap frequency is in 6.4-7.4GHz.
Referring to Fig. 7, the axle ratio characteristic of present invention loading artificial magnetic conductor circular polarised array antenna is in 6.08-7.65GHz frequencies
Section, the axial ratio bandwidth of circular polarised array antenna is 22%
, as shown in Figure 5, should the invention provides the radiation pattern at 6GHz and the several frequencies of 7.5 GHz referring to Fig. 8
Antenna has more good omnidirectional radiation characteristic in the range of the working band in whole broadband.
Above simulation result illustrates that present invention loading artificial magnetic conductor circular polarised array antenna is operated in 5.58-8GHz frequencies
Section, work relative bandwidth is 35.6%, and parabola is highly 0.1 λ, realizes good trap characteristic in 7GHz frequency bands, and is had steady
Fixed radiation characteristic.
Embodiment 2
On the basis of embodiment 1, described stepped impedance resonant element 8 is regular hexagon, and is formed by micro-strip stairstepping,
It is made up of the microstrip line of different in width and different length；Four radiating elements（1）The distance between be 13-17mm；Priority scheme
It is four radiating elements（1）The distance between be 15mm；The trap characteristic circular polarised array antenna of the artificial magnetic conductor of loading is thrown
Object plane is highly 0.1 λ, and element antenna circular polarisation relative bandwidth is 31%, and the relative bandwidth of array circular-polarization antenna is 22%.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (5)
1. a kind of trap characteristic circular polarised array antenna with loading artificial magnetic conductor, it is characterised in that including radiating element
（1）, L-type sheet metal（2）, first medium substrate（3）, second medium substrate（4）, metal floor（5）, rectangular patch（6）, work(point
Device（7）, described rectangular patch（6）It is multiple and is uniformly attached to second medium substrate（4）On, described second medium substrate
（4）Lower surface be attached to metal floor（5）On, it is characterised in that：Described first medium substrate（3）It is four, this four
One medium substrate（3）It is laterally homogeneous to be arranged in the second rectangular patch（6）Top, described first medium substrate（3）With second
Rectangular patch（6）Between be filled with froth bed（9）；Described radiating element（1）It is four, and is fitted in four first Jie respectively
Matter substrate（3）Top, described L-type sheet metal（2）It is four, and is located at first medium substrate respectively（3）Lower section, this four
Individual L-type sheet metal（2）Both sides be printed with two stepped impedance resonant elements respectively（8）, for realizing trap characteristic, the work(
Divide device（7）Positioned at first medium substrate（1）Top and with L-type sheet metal（2）It is connected.
2. the trap characteristic circular polarised array antenna with loading artificial magnetic conductor according to claim 1, its feature exist
In：Described stepped impedance resonant element（8）For regular hexagon, and formed by micro-strip stairstepping, by different in width and difference
The microstrip line composition of length.
3. the trap characteristic circular polarised array antenna with loading artificial magnetic conductor according to claim 1, its feature exist
In：Four radiating elements（1）The distance between be 13-17mm.
4. the trap characteristic circular polarised array antenna with loading artificial magnetic conductor according to claim 3, its feature exist
In：Four radiating elements（1）The distance between be 15mm.
5. the trap characteristic circular polarised array antenna with loading artificial magnetic conductor according to claim 1, its feature exist
In：The trap characteristic circular polarised array antenna parabola of the artificial magnetic conductor of loading is highly 0.1 λ, element antenna circular polarisation phase
It is 22% to the relative bandwidth with a width of 31%, array circular-polarization antenna.
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| CN201610358251.6A CN107437664A (en) | 2016-05-26 | 2016-05-26 | A kind of trap characteristic circular polarised array antenna with loading artificial magnetic conductor |
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| CN201610358251.6A CN107437664A (en) | 2016-05-26 | 2016-05-26 | A kind of trap characteristic circular polarised array antenna with loading artificial magnetic conductor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075225A (en) * | 2018-01-11 | 2018-05-25 | 广东工业大学 | A kind of micro-strip circular polarized antenna and wireless device |
| CN108963449A (en) * | 2018-07-20 | 2018-12-07 | 厦门大学 | A kind of multi-thread polarization reconfigurable antenna and its design method of integrated artificial magnetic conductor |
| CN109167184A (en) * | 2018-08-27 | 2019-01-08 | 哈尔滨工业大学 | The wide scan angle micro-strip phased array antenna of circular polarisation based on artificial magnetic conductor |
| CN111370853A (en) * | 2020-02-18 | 2020-07-03 | 上海交通大学 | Antenna unit and wide-angle scanning array based on generalized directional diagram product principle |
| CN112952395A (en) * | 2021-01-27 | 2021-06-11 | 南京理工大学 | Broadband reflection array antenna based on single-layer clip-shaped unit structure |
| CN113517572A (en) * | 2021-03-25 | 2021-10-19 | 西安电子科技大学 | High-isolation double-frequency dual-polarization array antenna for millimeter wave frequency band |
| CN115117635A (en) * | 2022-07-05 | 2022-09-27 | 西安电子科技大学 | Circular polarized antenna based on AMC structure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075225A (en) * | 2018-01-11 | 2018-05-25 | 广东工业大学 | A kind of micro-strip circular polarized antenna and wireless device |
| CN108963449A (en) * | 2018-07-20 | 2018-12-07 | 厦门大学 | A kind of multi-thread polarization reconfigurable antenna and its design method of integrated artificial magnetic conductor |
| CN108963449B (en) * | 2018-07-20 | 2023-09-15 | 厦门大学 | Multi-line polarization reconfigurable antenna integrated with artificial magnetic conductor and design method thereof |
| CN109167184A (en) * | 2018-08-27 | 2019-01-08 | 哈尔滨工业大学 | The wide scan angle micro-strip phased array antenna of circular polarisation based on artificial magnetic conductor |
| CN111370853A (en) * | 2020-02-18 | 2020-07-03 | 上海交通大学 | Antenna unit and wide-angle scanning array based on generalized directional diagram product principle |
| CN112952395A (en) * | 2021-01-27 | 2021-06-11 | 南京理工大学 | Broadband reflection array antenna based on single-layer clip-shaped unit structure |
| CN112952395B (en) * | 2021-01-27 | 2022-05-17 | 南京理工大学 | Broadband reflection array antenna based on single-layer clip-shaped unit structure |
| CN113517572A (en) * | 2021-03-25 | 2021-10-19 | 西安电子科技大学 | High-isolation double-frequency dual-polarization array antenna for millimeter wave frequency band |
| CN113517572B (en) * | 2021-03-25 | 2022-09-23 | 西安电子科技大学 | High-isolation double-frequency dual-polarization array antenna for millimeter wave frequency band |
| CN115117635A (en) * | 2022-07-05 | 2022-09-27 | 西安电子科技大学 | Circular polarized antenna based on AMC structure |
| CN115117635B (en) * | 2022-07-05 | 2023-10-17 | 西安电子科技大学 | Circular polarization antenna based on AMC structure |
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Application publication date: 20171205 |