CN107591610B - 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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- CN107591610B CN107591610B CN201710588505.8A CN201710588505A CN107591610B CN 107591610 B CN107591610 B CN 107591610B CN 201710588505 A CN201710588505 A CN 201710588505A CN 107591610 B CN107591610 B CN 107591610B
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Abstract
The invention belongs to millimeter wave antenna fields, provide a kind of broadband high-isolation low-cross polarization dual-linear polarization antenna, are 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 function separation structure and radiating element, wherein, 1 feed structure that polarizes is orthogonal with polarization 2 feed structures connection polarization isolation structure, the two incentive mode, submatrix function separation structure is set in polarization isolation structure, You Gongfen coupler and divides the coupling gap of coupler upper surface to constitute set on function, and coupling gap is connect by mating structure with radiating element；The present invention provides broadband high-isolation low-cross polarization dual-linear polarization antenna, it can be realized broadband high-efficiency high gain characteristics, dual polarization input port has high-isolation (being greater than 60dB) and dual-linear polarization all has high polarization purity (being greater than 50dB).
Description
Technical background
The invention belongs to millimeter wave antenna fields, in particular to a kind of broadband high-isolation low-cross polarization dual-linear polarization day
Line.
Background technique
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, ferrite isolation, polarization isolation etc. at present.Frequency division isolation uses
Uplink and downlink frequency range, high-isolation duplexer realize receiving and transmitting signal isolation, and which reduces the utilization rate of frequency spectrum resource.Ferrite
Material is worked at the same time for designing the transmitting-receiving of one-way transmission device (such as circulator) realization system, but Ferrite Material limits and is
System bandwidth of operation, greatly reduces system communication capacity.Polarization isolation uses high isolation dual polarized array antenna, transmitting-receiving system
System is worked respectively in different polarization modes, and this method requires antenna to have high polarization purity.The advantages of based on polarization isolation system,
Mainly there are two the array antennas and double polarization array antenna of cross polarization for its implementation；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 the system of reception, this method is due to two
Set antenna is twice system dimension increasing.Double polarization array antenna realizes dual-mode antenna Shared aperture, can largely subtract
Mini system size, but require two dual polarization feed ports that there is very high isolation.
Currently, double polarization array antenna design structure mainly has paster antenna, substrate integration wave-guide array antenna and plane
Reflectarray antenna；Paster antenna distinguishes two orthogonal modes of excitation radiation patch by two ports and realizes dual polarization, still
Radiation patch is in open space and is difficult to realize the high degree of isolation of dual-port；Substrate integrated wave guide structure is difficult to realize multilayer knot
Structure, and be lost since substrate exists, 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.
Summary of the invention
It is an object of the invention to be directed to the shortcoming of background technique, the wide band high-gain for providing a kind of high-isolation is double
Polarization array antenna is suitable for Terahertz frequency range wireless full-duplex communication.The technical solution adopted by the present invention are as follows:
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, which is characterized in that the dual polarization subarray element antenna includes polarization 1 feed structure (11), 2 feed of polarization
Structure (12), polarization isolation structure (13), submatrix function separation structure (14) and radiating element (15), wherein the polarization isolation knot
Structure is made of " ten " word coupling gap (132) that Polarization Coupling chamber (131) and its upper surface are arranged, the Polarization Coupling chamber
(131) lower surface center is equipped with 1 coupling gap of polarization, realizes feed, the polarization coupling for polarization 1 feed structure (11)
Closing chamber (131) side wall center, 2 feed structures (12) realization is fed equipped with 2 coupling gaps of polarizing, for polarizing, the polarization
1 feed structure (11) and the incentive mode of polarization 2 feed structures (12) are mutually orthogonal, and " ten " word described in composition couples gap
(132) two coupling gaps respectively correspond work in two polarized states；The submatrix function separation structure (14) is set to " ten "
Word couples gap (132) upper surface, You Gongfen coupler (141) and the coupling gap (142) for dividing coupler upper surface set on function
Constitute, the function divide coupler be quadrangle the square cavity with corner cut, four sides center be respectively provided with perturbed structure, each cut
Angle Position is corresponding to open up a coupling gap (142), and coupling gap (142) is connect 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 1 feeding network of polarization and institute
Polarization 1 feed structure connection is stated, 2 feeding networks of polarization are connect with 2 feed structures of the polarization.
Further, the Polarization Coupling chamber (131) is the quadrangle square cavity with corner cut.
It should be noted that working under the 1 feeding mechanism feed that polarizes in TE in the present invention120Mode is fed in polarization 2
The lower work of structure feed is in TE210Mode；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 are TE210Mode magnetic field maximum direction, TE120Mode magnetic field is most
Small direction, therefore, 1 feed structure of polarization can only motivate TE120Mode, 2 feed structures of polarization can only motivate TE210Mode, TE120
Mode and TE210Mode orthogonality realizes the high-isolation of two feed ports.The function of submatrix function separation structure divides coupler (141)
There are perturbed structures for 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 be realized broadband high-efficiency
High gain characteristics, dual polarization input port has high-isolation (be greater than 60dB) and dual-linear polarization to all have very high polarization pure
Degree (is greater than 50dB).
Detailed description of the invention
Fig. 1 is the XOZ sectional view of bipolaron array antenna of the invention；
Fig. 2 is the YOZ sectional view of bipolaron array antenna of the invention；
Fig. 3 is the partial dissection figure of bipolaron array antenna of the invention；
Fig. 4 is submatrix function separation structure top view of the invention；
Fig. 5 is polarization isolation structure top view of the invention；
Fig. 6 is 4 × 4 bipolaron array antennas, 1 feeding network of polarization of the invention；
Fig. 7 is 4 × 4 bipolaron array antennas, 2 feeding networks of polarization of the invention；
Fig. 8 is the overall structure figure of 4 × 4 bipolaron array antennas of the invention；
Fig. 9 is the broadband feeding network of 16 × 16 double polarization array antennas of the invention；
Figure 10 is 16 × 16 double polarization array antenna overall structure figures of the invention；
Figure 11 is the S parameter curve of 16 × 16 double polarization array antennas of the invention；
Figure 12 is the gain and cross polarization of 16 × 16 double polarization array antennas polarization 1 of the invention；
Figure 13 is the gain and cross polarization of 16 × 16 double polarization array antennas polarization 2 of the invention；
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
The present embodiment provides a kind of 16 × 16 high-isolations and the double polarization array antenna of low-cross polarization, overall structures
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, structure is 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 function separation structure (14) and radiating element (15)；Polarization Coupling cavity
(131) it is corner cut square cavity, works under the feed of polarization 1 in TE120Mode works under the conditions of polarization 2 is fed in TE210
Mode；For 1 feed gaps that polarize in the central lower surface of Polarization Coupling chamber (131), gap direction is TE120Mode magnetic field is maximum
Direction, TE210Mode magnetic field minimum direction；In the side wall of Polarization Coupling chamber (131), gap direction is 2 feed gaps that polarize
TE210Mode magnetic field maximum direction, TE120Mode magnetic field minimum direction；Therefore, 1 feed structure of polarization can only motivate TE120Mode,
2 feed structures that polarize can only motivate TE210Mode, TE120Mode and TE210Mode orthogonality realize two feed ports it is high every
From degree；There is ' ten ' words coupling gap (132) in Polarization Coupling cavity (131) upper surface, ' ten ' words couple the two of gap (132)
A gap respectively corresponds work in two polarized states, as shown in Figure 5；
As shown in figure 4, the submatrix function separation structure (14) is set to the coupling of " ten " word gap (132) upper surface, You Gongfen
Coupler (141) and the coupling gap (142) of coupler upper surface is divided to constitute set on function, the function divides coupler to be the equal band in quadrangle
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 connect by mating structure with the input port of radiating element (15)；
In addition, polarization 1 feed structure (11) includes input port (111), mating structure (112) and gradual change couple gap
(113)；2 feed structures (12) that polarize include input port (121) and mating structure (122)；Radiating element (15) input
It is connect between port and radiating aperture (152) by mating structure (151)；
The array-fed network of cummerbund includes polarization 1 feeding network (21) and polarization 2 feeding networks (22), 1 feed of polarization
Network is spliced by the face a H hybrid-T power splitter (211) and two face H hybrid-T power splitters (212), input port
2111, output port (2122) connects 1 input port of polarization (111) of bipolaron array antenna, as shown in Figure 6；2 feed of polarization
Network (22) is made of the face a H T waveform waveguide power divider and two face E T shape power splitters, and input port (2211) passes through the face H T
Shape power splitter, output port connect composition, the output port of the face E power splitter by mating structure (2221) with the face E power splitter
(2222) it is connect with 2 input port of polarization (121) of bipolaron array antenna, as shown in Figure 7；Finally, polarization 1 feeding network and
2 supply network roads that polarize and four bipolaron array antennas are spliced into 4 × 4 cell arrays, as shown in Figure 8；
Broadband feeding network is for designing 16 × 16 cell array antennas, as shown in figure 9, it is by the face H hybrid-T power splitter
(32) pass through with standard waveguide adapter composition, standard waveguide WR06 input port (311) with feeding network input port (313)
Grading structure (312) connection, feeding network input port (313) are connect with the face H hybrid-T power splitter (321), the face H hybrid-T
Power splitter (321) output port is connect with the input port of the face H hybrid-T power splitter (322), the face H hybrid-T power splitter
(322) output port is connect with the input port of the face H hybrid-T power splitter (323), the face H hybrid-T power splitter (323) it is defeated
Exit port is connect with the input port of the face H hybrid-T power splitter (324), and 16 feeding network is divided from composition 1；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, result, can from figure as shown in Figure 11,12,13
To see that dual-polarized 10dB return loss band is wider than 14%, and dual-port isolation is greater than 60dB.Meanwhile dual polarization exists
It is greater than 30dBi with interior gain, cross polarization is less than -50dB.
The above description is merely a specific embodiment, any feature disclosed in this specification, except non-specifically
Narration, can be replaced by other alternative features that are equivalent or have similar purpose；Disclosed all features or all sides
Method or in the process the step of, other than 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, which is characterized in that the dual polarization subarray element antenna includes polarization 1 feed structure (11), 2 feed knot of polarization
Structure (12), polarization isolation structure (13), submatrix function separation structure (14) and radiating element (15), wherein the polarization isolation structure
It is made of " ten " word coupling gap (132) that Polarization Coupling chamber (131) and its upper surface are arranged, the Polarization Coupling chamber (131)
Lower surface center is equipped with 1 coupling gap of polarization, realizes feed, the Polarization Coupling chamber for polarization 1 feed structure (11)
(131) side wall center is equipped with 2 coupling gap of polarization, for polarizing, 2 feed structures (12) realize feed, 1 feedback of polarization
Electric structure (11) and the incentive mode of polarization 2 feed structures (12) are mutually orthogonal, and " ten " word described in composition couples gap (132)
Two coupling gaps respectively correspond work in two polarized states；The submatrix function separation structure (14) is set to " ten " word coupling slot
Gap (132) upper surface, You Gongfen coupler (141) and the coupling gap (142) of coupler upper surface is divided to constitute set on function, it is described
Function divide coupler be quadrangle the square cavity with corner cut, four sides center be respectively provided with perturbed structure, each corner cut position pair
A coupling gap (142) should be opened up, coupling gap (142) is connect 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 connection, 2 feeding networks of polarization are connect with 2 feed structures of the polarization.
2. by broadband high-isolation low-cross polarization dual-linear polarization antenna described in claim 1, which is characterized in that the polarization coupling
Closing chamber (131) is the quadrangle square cavity with corner cut.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112074991B (en) * | 2018-03-08 | 2022-12-20 | 索尼公司 | Substrate integrated waveguide antenna |
| CN110943294B (en) * | 2019-12-16 | 2021-07-02 | 电子科技大学 | Broadband low-profile dual-circular-polarization panel antenna |
| 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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| CN105703064A (en) * | 2014-11-24 | 2016-06-22 | 中国航空工业集团公司雷华电子技术研究所 | Novel metal back cavity dual-polarization broadband radiation unit |
| CN106450748A (en) * | 2016-11-08 | 2017-02-22 | 广东盛路通信科技股份有限公司 | Cavity coupling slot radiation unit |
| CN206301951U (en) * | 2016-12-30 | 2017-07-04 | 广东盛路通信科技股份有限公司 | Slot-array antennas |
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| US20060038732A1 (en) * | 2003-07-11 | 2006-02-23 | Deluca Mark R | Broadband dual polarized slotline feed circuit |
| US10038237B2 (en) * | 2015-11-11 | 2018-07-31 | Raytheon Company | Modified cavity-backed microstrip patch antenna |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703064A (en) * | 2014-11-24 | 2016-06-22 | 中国航空工业集团公司雷华电子技术研究所 | Novel metal back cavity dual-polarization broadband radiation unit |
| CN106450748A (en) * | 2016-11-08 | 2017-02-22 | 广东盛路通信科技股份有限公司 | Cavity coupling slot radiation unit |
| CN206301951U (en) * | 2016-12-30 | 2017-07-04 | 广东盛路通信科技股份有限公司 | Slot-array antennas |
Non-Patent Citations (1)
| Title |
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| A K-band dual-polarized antenna with high isolation and low cross-polarization;Jie Wu et al;<2016 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications>;20161013;第1-4页 * |
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