CN107591610A - A kind of broadband high-isolation low-cross polarization dual-linear polarization antenna - Google Patents
A kind of broadband high-isolation low-cross polarization dual-linear polarization antenna Download PDFInfo
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- CN107591610A CN107591610A CN201710588505.8A CN201710588505A CN107591610A CN 107591610 A CN107591610 A CN 107591610A CN 201710588505 A CN201710588505 A CN 201710588505A CN 107591610 A CN107591610 A CN 107591610A
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Abstract
The invention belongs to millimeter wave antenna field, there is provided a kind of broadband high-isolation low-cross polarization dual-linear polarization antenna, suitable for Terahertz frequency range wireless full-duplex communication.The present invention includes the array-fed network of cummerbund and dual polarization subarray element antenna, dual polarization subarray element antenna includes 1 feed structure of polarization, 2 feed structures of polarization, polarization isolation structure, submatrix work(separation structure and radiating element, wherein, 1 feed structure that polarizes is orthogonal with polarization 2 feed structures connection polarization isolation structure, both incentive modes, submatrix work(separation structure is arranged in polarization isolation structure, coupler is divided by work(and divides the coupling gap of coupler upper surface to form located at work(, and coupling gap is connected by mating structure with radiating element；The present invention provides broadband high-isolation low-cross polarization dual-linear polarization antenna, broadband high-efficiency high gain characteristics can be realized, dual polarization input port has high-isolation (being more than 60dB) and dual-linear polarization is respectively provided with high polarization purity (being more than 50dB).
Description
Technical background
The invention belongs to millimeter wave antenna field, more particularly to a kind of broadband high-isolation low-cross polarization dual-linear polarization day
Line.
Background technology
As present communication system develops, full-duplex mode Point-to-Point Communication System will be employed for real time data interaction.
The transceiver insulation method of full duplex system is mainly frequency division isolation at present, and ferrite is isolated, polarization isolation etc..Frequency division isolation uses
Up-downgoing frequency range, high-isolation duplexer realize that receiving and transmitting signal is isolated, and which reduces the utilization rate of frequency spectrum resource.Ferrite
Material, which is used to designing one-way transmission device (such as circulator), realizes system transmitting-receiving while works that but Ferrite Material limits and is
System bandwidth of operation, greatly reduces system message capacity.Polarization isolation uses high isolation dual polarized array antenna, transmitting-receiving system
System is operated in different polarization modes respectively, and this method requires that antenna has high polarization purity.The advantages of based on polarization isolation system,
Its implementation mainly has the array antenna and double polarization array antenna of two cross polarizations；By adjusting two cross polarization battle arrays
The spacing of array antenna realizes the zero point alignment of antenna beam, reduces influence of the emission system to reception system, this method is due to two
Set antenna causes system dimension increases to be twice.Double polarization array antenna realizes dual-mode antenna Shared aperture, can largely subtract
Mini system size, but require that two dual polarization feed ports have very high isolation.
At present, double polarization array antenna design structure mainly has paster antenna, substrate integration wave-guide array antenna and plane
Reflectarray antenna；By two ports, two orthogonal modes of excitation radiation paster realize dual polarization to paster antenna respectively, still
Radiation patch is in the high degree of isolation that open space is difficult to realize dual-port；Substrate integrated wave guide structure is difficult to realize multilayer knot
Structure, and be lost because substrate is present, it is difficult to realize the array antenna of high-isolation；Research of planar reflectarray antennas is by using double
The phase-shifting unit of polarization structure realizes array dual polarization characteristic, but requires high isolation dual polarized feed antenna and aperture efficiency
It is low.
The content of the invention
It is an object of the invention to the weak point for background technology, there is provided a kind of wide band high-gain of high-isolation is double
Polarization array antenna, suitable for Terahertz frequency range wireless full-duplex communication.The technical solution adopted by the present invention is：
A kind of broadband high-isolation low-cross polarization dual-linear polarization antenna, including the array-fed network of cummerbund and dual polarization
Submatrix element antenna, it is characterised in that the dual polarization subarray element antenna includes 1 feed structure of polarization (11), the feed of polarization 2
Structure (12), polarization isolation structure (13), submatrix work(separation structure (14) and radiating element (15), wherein, the polarization isolation knot
" ten " word coupling gap (132) that structure is set by Polarization Coupling chamber (131) and its upper surface is formed, the Polarization Coupling chamber
(131) lower surface center is provided with the coupling of polarization 1 gap, for polarizing, 1 feed structure (11) realizes feed, the polarization coupling
Chamber (131) side wall center is closed to be provided with the coupling of polarization 2 gap, realize feed, the polarization for 2 feed structures of polarization (12)
The incentive mode of 1 feed structure (11) and 2 feed structures of polarization (12) is mutually orthogonal, and " ten " word described in composition couples gap
(132) two coupling gaps correspond to respectively is operated in two polarized states；The submatrix work(separation structure (14) is arranged at " ten "
Word coupling gap (132) upper surface, divide coupler (142) by work(and divide the coupling gap (142) of coupler upper surface located at work(
Form, the work(divides coupler to be respectively provided with perturbed structure for square cavity of the corner with corner cut, the center on four sides, each cut
Angle Position correspondingly opens up coupling gap (142), and coupling gap (142) is connected by mating structure with radiating element (15)；
The array-fed network of cummerbund includes 2 feeding networks of 1 feeding network of polarization and polarization, wherein, polarize 1 feeding network and institute
Polarization 1 feed structure connection is stated, 2 feeding networks of polarization are connected with 2 feed structures of the polarization.
Further, the Polarization Coupling chamber (131) is square cavity of the corner with corner cut.
It should be noted that in the present invention, TE is operated under the 1 feeding mechanism feed that polarizes120Pattern, in the feed of polarization 2
TE is operated under structure feed210Pattern；The gap direction for 1 feed gaps that polarize is TE120Mode magnetic field maximum direction, TE210
Mode magnetic field minimum direction, the gap direction of 2 feed gaps of polarization is TE210Mode magnetic field maximum direction, TE120Mode magnetic field is most
Small direction, therefore, 1 feed structure of polarization can only encourage TE120Pattern, 2 feed structures of polarization can only encourage TE210Pattern, TE120
Pattern and TE210Mode orthogonality realizes the high-isolation of two feed ports.The work(of submatrix work(separation structure divides coupler (141)
There is perturbed structure in inside, realize the broadband constant amplitude of power divider structure with mutually exporting, output port is real using coupling gap (142)
It is existing.
To sum up, the present invention provides broadband high-isolation low-cross polarization dual-linear polarization antenna, can realize broadband high-efficiency
High gain characteristics, dual polarization input port there is high-isolation (being more than 60dB) and dual-linear polarization to be respectively provided with very high polarization pure
Spend (being more than 50dB).
Brief description of the drawings
Fig. 1 is the XOZ profiles of the bipolaron array antenna of the present invention；
Fig. 2 is the YOZ profiles of the bipolaron array antenna of the present invention；
Fig. 3 is the partial dissection figure of the bipolaron array antenna of the present invention；
Fig. 4 is the submatrix work(separation structure top view of the present invention；
Fig. 5 is the polarization isolation structure top view of the present invention；
Fig. 6 is 4 × 4 bipolaron array antennas, 1 feeding network of polarization of the present invention；
Fig. 7 is 4 × 4 bipolaron array antennas, 2 feeding networks of polarization of the present invention；
Fig. 8 is the overall structure figure of 4 × 4 bipolaron array antennas of the present invention；
Fig. 9 is the broadband feeding network of 16 × 16 double polarization array antennas of the present invention；
Figure 10 is 16 × 16 double polarization array antenna overall structure figures of the present invention；
Figure 11 is the S parameter curve of 16 × 16 double polarization array antennas of the present invention；
Figure 12 is the gain and cross polarization of 16 × 16 double polarization array antennas polarization 1 of the present invention；
Figure 13 is the gain and cross polarization of 16 × 16 double polarization array antennas polarization 2 of the present invention；
Embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
The present embodiment provides the double polarization array antenna of a kind of 16 × 16 high-isolations and low-cross polarization, its overall structure
As indicated by 10, array antenna is mainly presented by the dual polarization subarray element antenna and broadband subarray of high-isolation and low-cross polarization
Electric network, wideband array feeding network realize double polarization array antenna.
Dual polarization subarray element antenna, its structure as shown in Figure 1, Figure 2, Figure 3 shows, including polarization 1 feed structure (11), polarization
2 feed structures (12), polarization isolation structure (13), submatrix work(separation structure (14) and radiating element (15)；Polarization Coupling cavity
(131) it is corner cut square cavity, TE is operated under the feed of polarization 1120Pattern, TE is operated under the conditions of the feed of polarization 2210
Pattern；Central lower surface of 1 feed gaps that polarize in Polarization Coupling chamber (131), its gap direction are TE120Mode magnetic field is maximum
Direction, TE210Mode magnetic field minimum direction；Side wall of 2 feed gaps that polarize in Polarization Coupling chamber (131), its gap direction are
TE210Mode magnetic field maximum direction, TE120Mode magnetic field minimum direction；Therefore, 1 feed structure of polarization can only encourage TE120Pattern,
2 feed structures that polarize can only encourage TE210Pattern, TE120Pattern and TE210Mode orthogonality realize two feed ports it is high every
From degree；' ten ' words coupling gap (132) in Polarization Coupling cavity (131) upper surface be present, ' ten ' words couple the two of gap (132)
Individual gap corresponds to be operated in two polarized states respectively, as shown in Figure 5；
As shown in figure 4, the submatrix work(separation structure (14) is arranged at " ten " word coupling gap (132) upper surface, by work(point
Coupler (142) and the coupling gap (142) of coupler upper surface is divided to form located at work(, the work(divides coupler to be the equal band in corner
The square cavity of corner cut, the center on four sides are respectively provided with perturbed structure, each corner cut position correspondence opens up a coupling gap
(142), coupling gap (142) is connected by mating structure with the input port of radiating element (15)；
In addition, 1 feed structure of polarization (11) includes input port (111), mating structure (112) and gradual change coupling gap
(113)；2 feed structures (12) that polarize include input port (121) and mating structure (122)；Radiating element (15) input
It is connected between port and radiating aperture (152) by mating structure (151)；
The array-fed network of cummerbund includes 1 feeding network of polarization (21) and 2 feeding networks of polarization (22), the feed of polarization 1
Network is spliced by a H faces hybrid-T power splitter (211) and two H faces hybrid-T power splitters (212), input port
2111, output port (2122) connects the input port of polarization 1 (111) of bipolaron array antenna, as shown in Figure 6；The feed of polarization 2
Network (22) is made up of a H faces T waveforms waveguide power divider and two E faces T-shaped power splitters, and input port (2211) passes through H faces T
Shape power splitter, output port are connected composition, the output port of E faces power splitter with E faces power splitter by mating structure (2221)
(2222) it is connected with the input port of polarization 2 (121) of bipolaron array antenna, as shown in Figure 7；Finally, polarize 1 feeding network and
2 supply network roads that polarize are spliced into 4 × 4 cell arrays with four bipolaron array antennas, as shown in Figure 8；
Broadband feeding network is used to design 16 × 16 cell array antennas, as shown in figure 9, it is by H faces hybrid-T power splitter
(32) pass through with standard waveguide adapter composition, standard waveguide WR06 input ports (311) with feeding network input port (313)
Grading structure (312) is connected, and feeding network input port (313) is connected with H faces hybrid-T power splitter (321), H faces hybrid-T
Power splitter (321) output port is connected with the input port of H faces hybrid-T power splitter (322), H faces hybrid-T power splitter
(322) output port is connected with the input port of H faces hybrid-T power splitter (323), H faces hybrid-T power splitter (323) it is defeated
Exit port is connected with the input port of H faces hybrid-T power splitter (324), from 1 point 16 of feeding network of composition；Broadband is fed
Network and 4 × 4 cell array antennas form 16 × 16 cell array antennas.
Emulation experiment is carried out to above-mentioned 16 × 16 cell array antenna, its result, can from figure as shown in Figure 11,12,13
To see that dual-polarized 10dB return losses band is wider than 14%, and dual-port isolation is more than 60dB.Meanwhile dual polarization exists
It is more than 30dBi with interior gain, cross polarization is less than -50dB.
The foregoing is only a specific embodiment of the invention, any feature disclosed in this specification, except non-specifically
Narration, can alternative features equivalent by other or with similar purpose replaced；Disclosed all features or all sides
Method or during the step of, in addition to mutually exclusive feature and/or step, can be combined in any way.
Claims (2)
1. a kind of broadband high-isolation low-cross polarization dual-linear polarization antenna, including the array-fed network of cummerbund and bipolaron
Array element antenna, it is characterised in that the dual polarization subarray element antenna includes 1 feed structure of polarization (11), the feed knot of polarization 2
Structure (12), polarization isolation structure (13), submatrix work(separation structure (14) and radiating element (15), wherein, the polarization isolation structure
" ten " word coupling gap (132) set by Polarization Coupling chamber (131) and its upper surface is formed, the Polarization Coupling chamber (131)
Lower surface center is provided with the coupling of polarization 1 gap, for polarizing, 1 feed structure (11) realizes feed, the Polarization Coupling chamber
(131) side wall center is provided with the coupling of polarization 2 gap, feed is realized for 2 feed structures (12) that polarize, the feedback of polarization 1
Electric structure (11) and the incentive mode of 2 feed structures of polarization (12) are mutually orthogonal, " ten " word coupling gap (132) described in composition
Two coupling gap corresponds to be operated in two polarized states respectively；The submatrix work(separation structure (14) is arranged at " ten " word coupling slot
Gap (132) upper surface, divide coupler (142) by work(and divide the coupling gap (142) of coupler upper surface to form located at work(, it is described
Work(divides coupler to be respectively provided with perturbed structure, each corner cut position pair for square cavity of the corner with corner cut, the center on four sides
Coupling gap (142) should be opened up, coupling gap (142) is connected by mating structure with radiating element (15)；The broadband
Subarray feeding network includes 2 feeding networks of 1 feeding network of polarization and polarization, wherein, 1 feeding network of polarization and the polarization 1
Feed structure is connected, and 2 feeding networks of polarization are connected with 2 feed structures of the polarization.
2. the broadband high-isolation low-cross polarization dual-linear polarization antenna as described in claim 1, it is characterised in that the polarization coupling
It is square cavity of the corner with corner cut to close chamber (131).
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| CN201710588505.8A CN107591610B (en) | 2017-07-19 | 2017-07-19 | A kind of broadband high-isolation low-cross polarization dual-linear polarization antenna |
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| CN201710588505.8A CN107591610B (en) | 2017-07-19 | 2017-07-19 | A kind of broadband high-isolation low-cross polarization dual-linear polarization antenna |
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| CN110943294A (en) * | 2019-12-16 | 2020-03-31 | 电子科技大学 | Broadband low-profile dual-circular-polarization panel antenna |
| CN112074991A (en) * | 2018-03-08 | 2020-12-11 | 索尼公司 | Substrate integrated waveguide antenna |
| CN112382853A (en) * | 2020-09-18 | 2021-02-19 | 上海无线电设备研究所 | Full-shunt-feed common-caliber dual-polarized waveguide slot filter antenna array system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112074991A (en) * | 2018-03-08 | 2020-12-11 | 索尼公司 | Substrate integrated waveguide antenna |
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| CN110943294B (en) * | 2019-12-16 | 2021-07-02 | 电子科技大学 | Broadband low-profile dual-circular-polarization panel antenna |
| CN112382853A (en) * | 2020-09-18 | 2021-02-19 | 上海无线电设备研究所 | Full-shunt-feed common-caliber dual-polarized waveguide slot filter antenna array system |
| CN112382853B (en) * | 2020-09-18 | 2023-02-28 | 上海无线电设备研究所 | Full-parallel-feed common-caliber dual-polarized waveguide slot filter antenna array system |
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| CN107591610B (en) | 2019-11-05 |
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