CN107809008A - The interior full-duplex antenna of band based on 180 degree mixing ring - Google Patents
The interior full-duplex antenna of band based on 180 degree mixing ring Download PDFInfo
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- CN107809008A CN107809008A CN201711185070.9A CN201711185070A CN107809008A CN 107809008 A CN107809008 A CN 107809008A CN 201711185070 A CN201711185070 A CN 201711185070A CN 107809008 A CN107809008 A CN 107809008A
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- 239000000523 sample Substances 0.000 claims abstract description 43
- 230000005855 radiation Effects 0.000 claims abstract description 16
- 230000010287 polarization Effects 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims description 27
- 230000009466 transformation Effects 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000002955 isolation Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 7
- 230000005284 excitation Effects 0.000 description 6
- 238000005388 cross polarization Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of interior full-duplex antenna of band based on 180 degree mixing ring, the antenna includes a square micro-strip radiation patch, two T-shaped probes for being used for couple feed, and a 180 degree mixing ring feeding network.The present invention, which devises one, has the antenna with interior full duplex function, and the transmitting of antenna carries out simultaneously with receive process and takes same working frequency range.Two isolated ports of ring are mixed by the use of 180 degree to be drawn by two 50 Ω microstrip lines as the transmitting terminal and receiving terminal of antenna, two other port, carry out couple feed to radiation side's paster through two T-shaped probes respectively.The transmitting of antenna uses orthogonal linear polarised electromagnetic wave with receiving, there is provided polarization isolation, while the isolation of the intrinsic two-port of 180 degree mixing ring offer furthermore achieved that the high-isolation between transmission and receiving port.
Description
Technical field
The present invention relates to wireless communication technology field, and in particular to a kind of interior full duplex day of band based on 180 degree mixing ring
Line.
Background technology
Antenna is a kind of switching device for radiating and receiving electromagnetic wave, can both be used as transmitting equipment by high frequency current transitions
Gone out for the radio wave transmission of same frequency, by radio wave reception and the height of same frequency can also be converted to as receiving device
Frequency electric current, it is widely used in mobile communication, broadcast, radio, remote sensing etc..For GSM, antenna is even more
The converter of circuitry signal and electromagnetic wave signal, is the gateway of information, the performance of the whole mobile network of its performance impact.
With the development of radio communication, people are for the rate requirement also more and more higher of radio communication, the appearance of radio communication
Amount demand is also increasing.Single antenna can realize transmitting and receive work while carry out and take same working frequency range can be effective
The quantity and space-consuming of antenna are reduced, there is very wide application space and practical value.
Realize with interior duplexing principal mode it is to use dual polarized antenna.Dual polarized antenna is sent out respectively due to two port
The electromagnetic wave of two orthogonal polarised directions is penetrated or received, is independent of each other each other, therefore can be carried by space diversity
The signal to noise ratio of high wireless communication receiver signal, so as to improve the capacity of radio communication.Due to two port energy of dual polarized antenna
Identical working frequency is enough operated in, and two orthogonal electromagnetic waves of polarised direction, dual polarized antenna conduct can be distinguished
For full-duplex antenna relative to traditional FDD antenna, it is launched can use same working frequency, therefore energy with receiving
Enough message capacities for exponentially increasing communication system.
Fed respectively using probe with interior duplexed antenna two-port in the past and produce orthogonal line polarization wave structure type presence
The shortcomings that interport isolation is not high, cross polarization is poor, the gain of antenna is not high.
The content of the invention
The invention aims to solve drawbacks described above of the prior art, there is provided a kind of to mix ring based on 180 degree
With interior full-duplex antenna.
The purpose of the present invention can be reached by adopting the following technical scheme that:
A kind of interior full-duplex antenna of band based on 180 degree mixing ring, the interior full-duplex antenna of described band include top dielectric
Substrate, layer dielectric substrate and two are used for the T-shaped probe of couple feed, and the T-shaped probe of two of which is respectively by first level arm 2
Formed with the first upright arm 4 and the second horizontal arm 3 and the vertical connection of the second upright arm 5,
The upper surface of described upper layer medium substrate is printed with square micro-strip radiation patch 1, described layer dielectric base
The lower surface of plate is printed with described first level arm 2 and the second described horizontal arm 3,
The upper surface of described layer dielectric substrate is printed with reflection floor 11, the lower surface of described layer dielectric substrate
180 degree mixing ring feeding network is printed with, described 180 degree mixing ring feeding network includes three sections quarter-wave first
Microstrip line 14, the second microstrip line 15 and the 4th microstrip line 17 of the 3rd microstrip line 16 and one section of 3/4ths wavelength, it is described
180 degree mixing ring feeding network includes four ports, wherein, first impedance of two ports as isolated port by different impedances
The impedance transformation line 9 of transformation line 8 and second and the 5th microstrip line 10 are drawn, and are used separately as transmitting terminal and receiving terminal;Another two end
Mouth is then drawn through the 6th microstrip line 6 and the 7th microstrip line 7 respectively, the first upright arm 4 and the second upright arm with two T-shaped probes
5 are connected.
Further, the 6th described microstrip line 6 and the 7th described microstrip line 7 respectively with through reflection floor 11 and under
The first upright arm 4 and the second upright arm 5 of two T-shaped probes of the through hole 19 of first through hole 18 and second on layer medium substrate 13
It is connected.
Further, described first level arm 2 and the second described horizontal arm 3 are rectangular microstrips, and along square
The diagonal positions of described micro-strip radiation patch are symmetrically placed, are mutually orthogonal to one another.
Further, the first described upright arm 4 and the second described upright arm 5 are metal probes, and positioned at square
The both sides symmetric position of the geometric center of micro-strip radiation patch, at the same one end of two metal probes respectively with the 6th microstrip line and
7th microstrip line is connected, and the other end is then each passed through reflection floor and the through hole and the two of two T-shaped probes on layer dielectric substrate
Horizontal arm is connected.
Further, the port at the emitted end of signal arrives separately at two T-shaped probes, reaches the signal of two T-shaped probes
Amplitude is equal and phase difference 180 degree, passes through the first level arm 2 and second of two horizontal directions of two T-shaped probes afterwards
Horizontal arm 3 is coupled to square micro-strip radiation patch and radiate, and the line polarization wave in y directions is produced at Antenna Far Field.
Further, the port at the received end of signal arrives separately at two T-shaped probes, reaches the signal of two T-shaped probes
Amplitude and phase are equal, pass through the horizontal arm 3 of first level arm 2 and second of two horizontal directions of two T-shaped probes afterwards
It is coupled to square micro-strip radiation patch to radiate, the line polarization wave in x directions is produced at Antenna Far Field.
Further, the port of transmitting terminal is encouraged, antenna produces the line polarization wave in y directions, and signal will not be from receiving terminal
Flow out port.
Further, the port of receiving terminal is encouraged, antenna produces the line polarization wave in x directions, and signal will not be from transmitting terminal
Flow out port.
Further, it is used separately as the transmitting of antenna using two isolated ports of 180 degree mixing ring feeding network and connects
Receiving end, while the transmitter and receiver of active antenna can produce orthogonal line polarization wave, this structure type causes antenna transmitting to connect
Knock off and make while carry out, and the isolation of transmitting terminal and receiving terminal greatly improves.
The present invention is had the following advantages relative to prior art and effect:
1st, 180 degree is mixed feeding network of the ring as antenna by the present invention, and two isolated ports of ring are mixed using 180 degree
Transmitting and receiving terminal respectively as antenna so that antenna transmitting receives to be carried out without interruption simultaneously.
2nd, the present invention mixes 180 degree feed end of the another two port as antenna of ring, is passed through using two feed probes
The horizontal arm of two T-shaped probes is coupled to square patch and radiate signal, is produced when wherein transmitting terminal encourages at Antenna Far Field
The line polarization wave in raw y directions, and the line polarization wave in x directions is then produced during receiving terminal excitation at Antenna Far Field, so as to further
Improve isolation characteristic between transmitting terminal and receiving terminal.
3rd, for the present invention when transmitting terminal encourages, the amplitude of signal two T-shaped probes of arrival is equal and phase differs 180 degree, production
Raw cross polar component is cancelled out each other, therefore antenna, when emission port encourages, the cross polarization on its antenna pattern divides
Amount increases relative to duplexed antenna in two traditional probe feed bands.
Brief description of the drawings
Fig. 1 is the numbering mark of the total schematic diagram and chief component of the present embodiment;
Fig. 2 is total schematic diagram of the present embodiment and the numbering mark of refinement;
Fig. 3 is the front section view of the present embodiment antenna;
Fig. 4 is the top view of the present embodiment upper layer medium substrate;
Fig. 5 is the upward view of the present embodiment upper layer medium substrate;
Fig. 6 is the top view of the present embodiment layer dielectric substrate;
Fig. 7 is the upward view of the present embodiment layer dielectric substrate;
Fig. 8 is the size marking figure of the present embodiment upper layer medium substrate surface structure;
Fig. 9 is the size marking figure of the present embodiment upper layer medium substrate lower surface configuration;
Figure 10 is the present embodiment layer dielectric upper surface of base plate size marking figure;
Figure 11 is the size marking figure of the present embodiment layer dielectric base lower surface structure;
Figure 12 (a) is that the 2.4GHz for the interior full-duplex antenna of band that the present embodiment port 1 is encouraged emulates surface current distribution;
Figure 12 (b) is that the 2.4GHz for the interior full-duplex antenna of band that the present embodiment port 2 is encouraged emulates surface current distribution;
Figure 13 is the test S parameter curve map of the present embodiment antenna;
Figure 14 (a) is the xoz faces measurement direction figure of the present embodiment antenna port 1 (2.4GHz) excitation;
Figure 14 (b) is the yoz faces measurement direction figure of the present embodiment antenna port 1 (2.4GHz) excitation;
Figure 15 (a) is the xoz faces measurement direction figure of the present embodiment antenna port 2 (2.4GHz) excitation;
Figure 15 (b) is the yoz faces measurement direction figure of the present embodiment antenna port 2 (2.4GHz) excitation.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment
Reference picture 1, Fig. 2 and Fig. 3, band interior full-duplex antenna of the present embodiment based on 180 degree mixing ring, including a pros
The micro-strip radiation patch 1 of shape, two T-shaped probes for being used for couple feed, wherein two T-shaped probes are respectively by first level arm 2, the
One upright arm 4 and the second horizontal arm 3 and the second upright arm 5 form, and a 180 degree mixing ring feeding network, described
180 degree mixing ring feeding network includes three sections of quarter-wave first microstrip lines 14, the second microstrip line 15 and the 3rd micro-strip
4th microstrip line 17 of line 16 and one section of 3/4ths wavelength, described square micro-strip radiation patch 1 are printed on upper strata
The upper surface of medium substrate 12, the horizontal arm 3 of first level arm 2 and second of the two T-shaped probes for couple feed are printed on
The back side of layer medium substrate 12,180 degree mixing ring feeding network are printed on the back side of layer dielectric substrate 13,180 degree mixing ring
Two isolated ports of feeding network are drawn by the 5th microstrip line 10 of the first impedance transformation line 8, the second impedance transformation line 9 and 50 Ω
Go out, be used separately as transmitting terminal (port 1) and receiving terminal (port 2), its another two port then the 6th micro-strip through 50 Ω respectively
The microstrip line 7 of line 6 and the 7th is drawn, respectively with through reflection floor 11 and layer dielectric substrate 13 on first through hole 18 and second
First upright arm 4 of two T-shaped probes of through hole 19 is connected with the second upright arm 5, and the first upright arm 4 and the second upright arm 5 are again
It is connected respectively with the horizontal arm 3 of first level arm 2 and second.
When sending, send signal to be sent into from transmitting terminal (port 1), arrived simultaneously respectively by 50 Ω the 5th microstrip line 10
Up to two ports of 180 degree mixing ring feeding network, two ports are respectively by 50 Ω the 6th microstrip line 6 and the 7th microstrip line 7
Draw, signal is delivered to two T respectively by the two of two T-shaped probes vertical the first upright arms 4 and the second upright arm 5 respectively afterwards
The horizontal horizontal arm 3 of first level arm 2 and second of the two of type probe, the final horizontal arm 3 of first level arm 2 and second simultaneously will letter
Number being coupled to square patch radiate.Because signal reaches the amplitude phase of the two horizontal horizontal arms 3 of first level arm 2 and second
Deng and phase difference 180 degree, the line polarization wave in y directions can be produced at Antenna Far Field.
When receiving the line polarization wave in x directions, reception signal receives at square-shaped radiation paster 1, and square-shaped radiation paster 1 will
The signal that receives while it is coupled to the horizontal arm 3 of first level arm 2 and second of two T-shaped probes, the water of first level arm 2 and second
Signal is delivered separately to two vertical the first upright arms 4 and the second upright arm 5 of two T-shaped probes, the first upright arm by flat arm 3 again
4 and second upright arm 5 signal passed into 180 degree again mix two of ring feeding network respectively by 50 Ω the 6th microstrip line 6
The port drawn with the 7th microstrip line 7, the signal finally transmitted by the 6th microstrip line 6 and the 7th microstrip line 7 while arrival first
Impedance transformation line 8, the second impedance transformation line 9 export from receiving terminal (port 2).
Fig. 4,5,6,7 are respectively the electrical structure diagram of two medium substrate upper and lower surfaces, and striped fill part is conductive copper
The structure of covering, remainder are medium substrate.
Fig. 8,9,10,11 are the size marking figure of each several part electrical structure.
With reference to Fig. 8, Fig. 9, Figure 10, Figure 11 size marking, the design parameter of antenna is as follows in the present embodiment:Two media
The material of plate is identical with size, and thickness c is 0.8mm, and width b is 100mm, and length a is 100mm.Height between two dielectric-slabs
Degree h is 6mm.The length of side 1a of square patch and spacing 1b apart from dielectric-slab edge is respectively 44mm, 28mm.One T-shaped probe
The length and width 2a, 2b of first level arm 2 be respectively 5.6mm, 2mm, the length of the second horizontal arm 3 of another T-shaped probe
With width 3a, 3b is respectively 5.6mm, 2mm, reflects on floor two through hole center respectively apart from dielectric-slab Edge Distance 18a, 19a
For 12.5mm, the key dimension 6a, 6b, 6c of 180 degree mixing ring feeding network are respectively 6.78mm, 5.42mm, 2.25mm, 7a,
7b, 7c are respectively 6.78mm, 5.42mm, 2.25mm, and 8a, 8b are respectively 19.4mm, 1.5mm, 9a, and 9b is respectively 9.6mm,
2.25mm, 10a, 10b are respectively 28.2mm, 2.25mm, 14a, and 14b is respectively 21mm, 19.72mm, 15a, and 15b is respectively
21mm, 19.72mm, 16a, 16b are respectively 21mm, 19.72mm, 17a, and 17b is respectively 21mm, 19.72mm.The port of the antenna
1 is operated in 2.45GHz frequency band, as sending port.Port 2 is operated in 2.4GHz frequency band, as receiving port.Port 1
During excitation, antenna can produce the line polarization wave in y directions in far field;When port 2 is encouraged, antenna then produces the line in x directions in far field
Polarized wave.As Surface current distribution of the paster in 2.4GHz is understood in Figure 12.In two frequency bands, the isolation of two ports
It is all higher than 35dB, such as Figure 13.When being worked in the port 1 of antenna, gain of the antenna at the working frequency 2.4GHz of port 1 is
The cross polarization ratio in 8.6dBi, E face and H faces is all higher than 25dB, and when being worked in the port 2 of antenna, antenna is in the working frequency of port 2
Gain at 2.14GHz is 8.1dBi, and the cross polarization ratio in E faces is more than 30dB, and the cross polarization of H faces is than 10dB, such as imitating for antenna
True measurement direction Figure 14, shown in 15.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (6)
1. a kind of interior full-duplex antenna of band based on 180 degree mixing ring, it is characterised in that the interior full-duplex antenna of described band includes
Upper layer medium substrate, layer dielectric substrate and two are used for the T-shaped probe of couple feed, and the T-shaped probe of two of which is respectively by the
One horizontal arm and the first upright arm and the second horizontal arm and the second upright arm vertical connection are formed,
The upper surface of described upper layer medium substrate is printed with square micro-strip radiation patch, under described layer dielectric substrate
Surface is printed with described first level arm and the second described horizontal arm,
The upper surface of described layer dielectric substrate is printed with reflection floor, and the lower surface of described layer dielectric substrate is printed with
180 degree mixes ring feeding network, and described 180 degree mixing ring feeding network includes three sections of quarter-wave first micro-strips
Line, the second microstrip line and the 4th microstrip line of the 3rd microstrip line and one section of 3/4ths wavelength, the mixing ring feedback of described 180 degree
Electric network includes four ports, wherein, two ports are as isolated port by the first impedance transformation line of different impedances and second
Impedance transformation line and the 5th microstrip line are drawn, and are used separately as transmitting terminal and receiving terminal;Another two port is then micro- through the 6th respectively
Band line and the 7th microstrip line are drawn, and are connected with the first upright arm of two T-shaped probes and the second upright arm.
2. the band interior full-duplex antenna according to claim 1 based on 180 degree mixing ring, it is characterised in that described the
Six microstrip lines and the 7th described microstrip line respectively with through the first through hole and second on reflection floor and layer dielectric substrate
The first upright arm and the second upright arm of two T-shaped probes of through hole are connected.
3. the band interior full-duplex antenna according to claim 1 based on 180 degree mixing ring, it is characterised in that described the
One horizontal arm and the second described horizontal arm are rectangular microstrips, and along the diagonal position of square described micro-strip radiation patch
Put symmetrically placed, be mutually orthogonal to one another.
4. the band interior full-duplex antenna according to claim 1 based on 180 degree mixing ring, it is characterised in that described the
One upright arm and the second described upright arm are metal probes, and the both sides of the geometric center positioned at square micro-strip radiation patch
Symmetric position, while one end of two metal probes is connected with the 6th microstrip line and the 7th microstrip line respectively, the other end is then distinguished
It is connected through the through hole on reflection floor and layer dielectric substrate with two horizontal arms of two T-shaped probes.
5. the band interior full-duplex antenna according to claim 1 based on 180 degree mixing ring, it is characterised in that signal is through hair
The port for penetrating end arrives separately at two T-shaped probes, and the signal amplitude of two T-shaped probes of arrival is equal and phase differs 180 degree, it
Square micro-strip is coupled to by the first level arm and the second horizontal arm of two horizontal directions of two T-shaped probes afterwards and radiates patch
Piece is radiate, and the line polarization wave in y directions is produced at Antenna Far Field.
6. the band interior full-duplex antenna according to claim 1 based on 180 degree mixing ring, it is characterised in that signal is through connecing
The port of receiving end arrives separately at two T-shaped probes, and the signal amplitude and phase of two T-shaped probes of arrival are equal, pass through afterwards
The first level arm and the second horizontal arm of two horizontal directions of two T-shaped probes are coupled to square micro-strip radiation patch radiation
Go out, the line polarization wave in x directions is produced at Antenna Far Field.
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CN201711185070.9A CN107809008B (en) | 2017-11-23 | 2017-11-23 | In-band full duplex antenna based on 180-degree hybrid loop |
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Cited By (6)
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CN108682939A (en) * | 2018-04-19 | 2018-10-19 | 深圳三星通信技术研究有限公司 | A kind of filter antenna |
CN109216946A (en) * | 2018-09-18 | 2019-01-15 | 重庆金美通信有限责任公司 | A kind of linear polarization multibeam antenna |
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US10756436B2 (en) | 2018-10-18 | 2020-08-25 | Sabanci Universitesi | Double-differential fed, dual polarized patch antenna system with advanced interport RF isolation for IBFD transceivers |
WO2021012299A1 (en) * | 2019-07-22 | 2021-01-28 | 深圳市易探科技有限公司 | Dual-polarized microstrip antenna for mobile sensor and signal transceiving method therefor |
CN115832691A (en) * | 2022-12-19 | 2023-03-21 | 杭州电子科技大学 | Double-zero high-isolation dual-polarization through probe patch antenna |
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Cited By (7)
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CN110212940A (en) * | 2019-05-13 | 2019-09-06 | 电子科技大学 | A kind of antenna system for co-channel full duplex communication simultaneously |
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