CN112909539B - Millimeter wave frequency polarization dual-random multi-port beam-focusing antenna - Google Patents
Millimeter wave frequency polarization dual-random multi-port beam-focusing antenna Download PDFInfo
- Publication number
- CN112909539B CN112909539B CN202110077670.3A CN202110077670A CN112909539B CN 112909539 B CN112909539 B CN 112909539B CN 202110077670 A CN202110077670 A CN 202110077670A CN 112909539 B CN112909539 B CN 112909539B
- Authority
- CN
- China
- Prior art keywords
- random
- module
- port
- frequency
- different
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
- H01Q15/002—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective said selective devices being reconfigurable or tunable, e.g. using switches or diodes
-
- 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
- H01Q15/24—Polarising devices; Polarisation filters
-
- 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
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
Abstract
The invention discloses a millimeter wave frequency polarization dual-random multi-port beam-bunching antenna, which comprises: the device comprises a multi-port excitation feed module, a frequency random adjusting module, a polarization random adjusting module and a bunching generating module; the multi-port excitation feed module is positioned below the frequency random adjusting module, and the frequency random adjusting module is positioned below the polarization random adjusting module; the multi-port excitation feed module, the frequency random adjusting module and the polarization random adjusting module jointly form a super-structure cavity; the bunching generation module is positioned in the central cavity of the super-structural cavity. The invention has simple design form and lower processing and preparation difficulty, and can realize processing and preparation and practical application in the millimeter wave frequency band; the number of low correlation random radiation patterns can be greatly increased.
Description
Technical Field
The invention relates to the field of millimeter wave beam-focusing random radiation cavity antennas, in particular to a millimeter wave frequency polarization dual-random multi-port beam-focusing antenna.
Background
The existing millimeter wave beam-bunching random radiation cavity antenna mainly utilizes a mechanical structure which is randomly changed in a cavity or a random regulation surface designed by adopting a metamaterial technology to change the excitation amplitude-phase characteristic or the modulation amplitude-phase characteristic of the antenna under different working frequencies, so that a random radiation directional diagram with low correlation is generated under different working frequency points; these random radiation patterns encode the imaging plane in which the target is located, and the encoded imaging plane can be used as a reference detection mode in calculating the correlation imaging.
The existing millimeter wave beam-bunching random radiation cavity antenna at least has the following problems:
1. in the frequency bands of millimeter waves and above, the limitation of material preparation performance is difficult to consider both the high transmission phase regulation capability and the low system loss characteristic, so that the millimeter wave beam-forming random radiation cavity antenna based on the metamaterial random regulation surface is difficult to prepare;
2. because the space proportion of the randomly-changed mechanical structure occupying the whole cavity is limited, the working frequency band of the millimeter wave beam-forming random radiation cavity antenna based on the randomly-changed mechanical structure is limited, a large number of low-correlation random radiation directional diagrams cannot be effectively generated, and the imaging precision and accuracy of subsequent calculation correlation imaging are restricted;
3. with the improvement of working frequency, the structure size of the traditional millimeter wave beam-bunching random radiation cavity antenna is reduced and limited by a processing technology, and the processing of an extremely narrow structure cannot be realized, so that the application of the millimeter wave beam-bunching random radiation cavity antenna is limited.
Disclosure of Invention
The invention provides a millimeter wave frequency polarization dual-random multi-port beam-focusing antenna, which can reduce the design difficulty of a millimeter wave beam-focusing random radiation cavity antenna, realize the generation of a large number of low-correlation random radiation directional diagrams, generate the low-correlation random radiation directional diagrams under the excitation of different frequencies, different polarization states and different ports, and be used for calculating the correlation high-resolution imaging.
In order to achieve the purpose, the invention adopts the following technical scheme:
a millimeter wave frequency polarized dual random multi-port beamforming antenna comprising: the device comprises a multi-port excitation feed module, a frequency random adjusting module, a polarization random adjusting module and a bunching generating module; the multi-port excitation feed module is positioned below the frequency random adjusting module, and the frequency random adjusting module is positioned below the polarization random adjusting module; the multi-port excitation feed module, the frequency random adjusting module and the polarization random adjusting module jointly form a super-structure cavity; the bunching generation module is positioned at a cavity in the center of the super-structure cavity;
the multi-port excitation feed module is provided with a plurality of standard rectangular waveguide feed ports at different positions, receives electromagnetic wave signals of the plurality of standard waveguide feed ports respectively or simultaneously, transmits the signals to the frequency random adjustment module and restrains the signals in the super-structure cavity.
As a further improvement of the invention, the multiport excitation feed module is a hollow cylindrical depressed flat plate, the depression is a flat bottom surface structure and an annular side wall formed by inward expansion of the surface of one side of the flat plate, and both sides of the depression are vertical structures so as to form a hollow hole in the center; the frequency stochastic tuning module is located above a recessed bottom surface of the multi-port excitation feed module.
As a further improvement of the invention, the number of the standard waveguide feed ports of the multi-port excitation feed module is not less than two.
As a further improvement of the invention, the frequency random adjustment module is an annular plate with a super-structure surface with different reflection characteristic structures, and the super-structure surface can generate reflection amplitude and reflection phase characteristics which are widely changed under different frequencies.
As a further improvement of the invention, the metamaterial surface is composed of metamaterial units with different reflection amplitudes and reflection phase characteristics, the reflection characteristics of different types of metamaterial units are different, and the same type of metamaterial unit can realize low correlation reflection characteristics by changing certain structural parameters.
As a further improvement of the invention, the polarization random adjustment module is a hollow cover plate engraved with a geometric pattern structure.
As a further improvement of the invention, the geometric pattern structure is a sparse array of elliptical hole structures with different minor axis lengths, different rotation angles and different arrangement positions.
As a further improvement of the present invention, the beamforming generation module is a circular horn antenna with a specific opening angle.
As a further improvement of the present invention, a circular truncated cone is arranged outside the circular horn antenna, and the beamforming generation module is arranged in a hollow hole in the center of the multi-port excitation feed module through the circular truncated cone.
As a further improvement of the invention, the effective working bandwidth of the beam-forming antenna covers a 75GHz-85GHz frequency band, and the overall radiation efficiency of the frequency polarization dual-random multi-port beam-forming antenna is higher than 85%; when the working frequency and the polarization state are fixed, the correlation of the random radiation pattern generated by different excitation feed ports during working is lower than 0.3; the correlation of the random radiation pattern generated by bunching under different working frequencies is lower than 0.3 when the excitation feed port and the polarization state are fixed; the correlation of the beam-forming random radiation pattern generated under different polarization states is lower than 0.3 when the working frequency is fixed at the excitation feed port.
Compared with the prior art, the invention has the following technical effects:
the invention relates to a millimeter wave frequency polarization dual-random multi-port beamforming antenna which comprises a multi-port excitation feed module, a frequency random adjusting module, a polarization random adjusting module and a beamforming generating module. The multi-port excitation feed module is provided with a plurality of waveguide feed ports at different positions, and when the plurality of ports respectively work independently or simultaneously, the millimeter wave frequency polarization dual-random multi-port beam-focusing antenna can generate a low-correlation random radiation pattern; the frequency random adjusting module is a super-structure surface with different reflection characteristic responses under different frequencies, and the super-structure surface changes the excitation mode adjustment of the super-structure cavity under different frequencies to realize the effect of frequency random adjustment, so that the millimeter wave frequency polarization dual-random multi-port beam bunching antenna can generate low-correlation random radiation patterns under different working frequencies; the polarization random adjusting module is a hollow circular metal cover engraved with an elliptical hole sparse array with different minor axis lengths, different rotation angles and different arrangement positions, and the elliptical hole sparse array has different polarization forms, so that the millimeter wave frequency polarization dual-random multi-port beam-focusing antenna can generate low-correlation random radiation directional diagrams in different polarization states; the invention expands the application scene of the traditional millimeter wave beam-bunching random radiation cavity antenna and provides a method for generating a low-correlation radiation directional diagram by port dimension and polarization dimension; the invention has simple design form and lower processing and preparation difficulty, and can realize processing and preparation and practical application in frequency bands of millimeter wave and above; the invention can effectively improve the generating capability of the low-correlation random radiation pattern, the relatively independent frequency interval is less than 0.13%, the radiation energy is mainly concentrated in a set angular domain range and can be adjusted, the overall radiation efficiency of the frequency polarization dual-random multi-port beam-bunching antenna is higher than 85%, and the correlation of radiation patterns generated under different working frequencies, polarization states and feed ports is lower than 0.3.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a multi-port excitation feed module according to the present invention;
FIG. 3 is a schematic diagram of a frequency random adjustment module according to the present invention;
FIG. 4 is a schematic diagram of the structure of the polarization random adjustment module of the present invention;
FIG. 5 is a schematic structural diagram of a bunching generation module in accordance with the present invention;
FIG. 6 is a graph of the low correlation random field distribution produced at different feed ports or frequencies according to an embodiment of the present invention;
FIG. 7 is a beaming random radiation pattern for different feed ports produced by an embodiment of the present invention;
FIG. 8 is a beaming random radiation pattern for different polarization states produced by an embodiment of the present invention;
FIG. 9 is a beaming random radiation pattern at different operating frequencies produced by an embodiment of the present invention;
FIG. 10 shows the reflection coefficient of the feed port and the mutual coupling coefficient between the ports according to an embodiment of the present invention;
FIG. 11 is a graph of the radiation efficiency of an embodiment of the present invention;
FIG. 12 is a correlation coefficient of a beaming random radiation pattern at different feed ports according to an embodiment of the present invention;
FIG. 13 is a graph of correlation coefficients of beaming random radiation patterns for different polarization states in accordance with an embodiment of the present invention;
fig. 14 shows correlation coefficients of beaming random radiation patterns at different operating frequencies according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a millimeter wave frequency polarization dual-random multi-port beamforming antenna, including: the multi-port excitation power feeding system comprises a multi-port excitation power feeding module 1, a frequency random adjusting module 2, a polarization random adjusting module 3 and a bunching generating module 4, wherein the multi-port excitation power feeding module 1 is positioned below the frequency random adjusting module 2, and the frequency random adjusting module 2 is positioned below the polarization random adjusting module 3; the multi-port excitation feed module 1, the frequency random adjusting module 2 and the polarization random adjusting module 3 jointly form a super-structure cavity; the bunching generation module 4 is positioned in a central cavity of the super-structural cavity;
the multi-port excitation feed module 1 is used for receiving electromagnetic wave signals of a plurality of standard waveguide feed ports 5 respectively or simultaneously, transmitting the signals to the frequency random adjustment module 2 and constraining the signals in the whole cavity, and excitation mode distribution in the super-structure cavity can be changed by changing the positions of the standard waveguide feed ports 5.
Preferably, the number of the standard waveguide feed ports 5 of the multi-port excitation feed module 1 is not limited to two, increasing the number of the ports can generate more excitation mode distributions in the super-structure cavity, and the change of the distribution positions of the standard waveguide feed ports 5 can generate different excitation mode distributions in the super-structure cavity under the condition of the same number.
The frequency random adjustment module 2 utilizes the characteristics that the super-structure surface can generate different emission amplitudes and emission phases under different frequencies, when electromagnetic wave signals with different frequencies are transmitted from the multi-port excitation feed module 1 to the frequency random adjustment module 2, excitation mode distribution with low correlation is generated under discrete working frequency points through emission of the super-structure surface, and the excitation mode distribution with low correlation has different initial amplitudes and initial phases at the same position.
Preferably, the frequency random adjustment module 2 is composed of super-structure units with different reflection amplitudes and reflection phase characteristics, reflection characteristics of different types of super-structure units are different, and low-correlation reflection characteristics can be realized by changing a certain structural parameter of the same type of super-structure units.
Preferably, the frequency stochastic regulation module 2 is located above the multi-port excitation feed module 1, and the two modules are closely attached and both are in a hollow form.
Preferably, the polarization random adjustment module 3 is a hollow cover plate 31 engraved with a sparse array of elliptical hole structures having different minor axis lengths, different rotation angles and different arrangement positions.
Preferably, the polarization random adjusting module 3 is located on the frequency random adjusting module 2, and the polarization random adjusting module 3, the frequency random adjusting module 2 and the multi-port excitation feed module 1 jointly form a super-structure cavity.
Preferably, the sparse array of elliptical hole structures engraved on the polarization random adjustment module 3 has different short axis lengths, different rotation angles and different distribution positions, and the sparse array can generate random radiation patterns with multiple polarization states, and the correlation of the random radiation patterns in different polarization states is low.
Preferably, the beamforming generating module 4 is a circular horn antenna 42 with a specific opening angle 41; the beamforming generation module 4 is arranged at a hollow in the center of the multiport excitation feed module 1.
The millimeter wave frequency polarization dual-random multi-port beamforming antenna is characterized in that the multi-port excitation feed module 1 generates different excitation mode distributions when different ports are excited independently or simultaneously, so that port randomness is realized; the frequency random adjusting module 2 generates different excitation mode distributions under different frequencies, thereby realizing frequency random; the polarization random module 3 realizes random radiation patterns of various polarization states, thereby realizing polarization randomness; the main beam with strong directivity is generated by the beam-forming module 4, thereby realizing the beam-forming characteristic.
The present invention will be described in detail below with reference to specific embodiments and the accompanying drawings.
Examples
As shown in fig. 1, a millimeter wave frequency polarized dual-random multi-port beamforming antenna is characterized by comprising: the system comprises a multiport excitation feed module 1, a frequency random adjusting module 2, a polarization random adjusting module 3 and a bunching generating module 4; the multi-port excitation feed module 1 is positioned below the frequency random adjusting module 2, and the frequency random adjusting module 2 is positioned below the polarization random adjusting module 3; the multi-port excitation feed module 1, the frequency random adjusting module 2 and the polarization random adjusting module 3 jointly form a super-structure cavity; the bunching generation module 4 is positioned in the central cavity of the super-structural cavity.
The multi-port excitation feed module 1 is provided with a plurality of standard rectangular waveguide feed ports 5 at different positions, and the multi-port excitation feed module 1 receives electromagnetic wave signals of the standard rectangular waveguide feed ports 5 respectively or simultaneously, transmits the signals to the frequency random adjustment module 2 and restrains the signals in a super-cavity.
As shown in fig. 2, the multiport excitation feed module 1 is a hollow cylindrical depressed flat plate, the depressed part is a bottom flat structure 12 and a ring-shaped side wall 11 formed by inward expansion of one side surface of the flat plate, and both sides of the depressed part are vertical structures so as to form a hollow 13 in the center; the frequency random adjusting module 2 is positioned on the concave bottom surface of the multi-port excitation feed module 1.
As shown in fig. 3, the frequency random adjusting module 2 is an annular plate 21 having a super-structured surface 22 with different reflection characteristic structures, and the super-structured surface 22 can generate reflection amplitude and reflection phase characteristics with wide range of variation under different frequencies.
As shown in fig. 4, the polarization random access module 3 is a hollow cover plate 31 engraved with a geometric pattern structure 32. In a preferred embodiment, the geometric pattern structure 32 is a sparse array of elliptical hole structures with different minor axis lengths, different rotation angles, and different arrangement positions.
As shown in fig. 5, the beamforming generating module 4 is a circular horn antenna 42 with a specific opening angle 41; the circular horn antenna 42 is externally provided with a circular truncated cone 43, and the beamforming generation module 4 is arranged in the hollow hole 13 in the center of the multi-port excitation feed module 1 through the circular truncated cone 43.
As a preferred embodiment, the millimeter wave frequency polarization dual-random multi-port beamforming antenna can generate a random radiation pattern with frequency characteristics, and the correlation of the random radiation pattern at different discrete frequency points is low; random radiation patterns with various polarization states can be generated, and the random radiation patterns under different polarization states have low correlation; when excitation is carried out through different ports, different random radiation patterns can be generated, and the low correlation of the random radiation patterns under different frequencies and different polarization states is still met.
As shown in fig. 6, the illustrated embodiment of the present invention can generate different excitation mode distributions in the metamaterial cavity when excited by different ports; different excitation mode distributions can be generated in the super-structure cavity under different discrete working frequencies; these excitation modes are randomly radiated by a sparse array of elliptical hole structures with different minor axis lengths, different rotation angles, and different distribution positions, thereby producing a random radiation pattern with low correlation in all three dimensions, port, frequency, and polarization.
As shown in fig. 7 to 9, the illustrated embodiment of the present invention can generate low-correlation beam-bunching random radiation patterns when the operating frequency and the polarization state are fixed and different excitation feed ports 5 work; the low-correlation beam-bunching random radiation pattern can be generated under different working frequencies with fixed polarization states at the excitation feed port 5; the low-correlation beam-bunching random radiation pattern can be generated under the conditions that the exciting feed port 5 and the working frequency are fixed and different polarization states are realized; the radiation energy is mainly concentrated in the set angular domain range and can be adjusted.
As shown in fig. 10 to 14, the effective working bandwidth can cover a 75GHz-85GHz band, and the overall radiation efficiency of the frequency polarization dual-random multi-port beamforming antenna is higher than 85%; when the working frequency and the polarization state are fixed, the correlation of the random radiation pattern generated by different excitation feed ports 5 during working is lower than 0.3; the polarization state can be fixed at the excitation feed port 5, and the correlation of the beam-bunching random radiation pattern generated under different working frequencies is lower than 0.3; the correlation of the beam-forming random radiation pattern generated under different polarization states is lower than 0.3, and the working frequency is fixed when the feed port 5 is excited.
In summary, the millimeter wave frequency polarization dual-random multi-port beamforming antenna of the present invention includes a multi-port excitation feed module 1, a frequency random adjustment module 2, a polarization random adjustment module 3, and a beamforming generation module 4. The multi-port excitation feed module 1 is provided with a plurality of waveguide feed ports 5 at different positions, and when the plurality of ports respectively work independently or simultaneously, the millimeter wave frequency polarization dual-random multi-port beam-forming antenna can generate a low-correlation random radiation pattern; the frequency random adjusting module 2 is a super-structure surface with different reflection characteristic responses under different frequencies, and the super-structure surface changes the excitation modes of the super-structure cavity under different frequencies to realize the function of frequency random adjustment, so that the millimeter wave frequency polarization dual-random multi-port beamforming antenna can generate low-correlation random radiation patterns under different working frequencies; the polarization random adjusting module 3 is a hollow circular metal cover engraved with an elliptical hole sparse array with different minor axis lengths, different rotation angles and different arrangement positions, and the elliptical hole sparse array has different polarization forms, so that the millimeter wave frequency polarization dual-random multi-port beam-bunching antenna can generate low-correlation random radiation patterns in different polarization states; the invention expands the application scene of the traditional millimeter wave beam-bunching random radiation cavity antenna and provides a method for generating a low-correlation radiation directional diagram by port dimension and polarization dimension; the invention has simple design form and lower processing and preparation difficulty, and can realize processing and preparation and practical application in the millimeter wave frequency band; the invention can greatly improve the number of low-correlation random radiation directional diagrams, the relatively independent frequency interval is less than 0.13%, the radiation energy is mainly concentrated in a set angular domain range, the overall radiation efficiency of the frequency polarization dual-random multi-port beam-bunching antenna is higher than 85%, and the correlation of the random radiation directional diagrams generated under different working frequencies, polarization states and feed ports 5 is lower than 0.3.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A millimeter wave frequency polarized dual random multi-port beamforming antenna, comprising: the device comprises a multi-port excitation feed module (1), a frequency random adjusting module (2), a polarization random adjusting module (3) and a beam bunching generating module (4); the multi-port excitation feed module (1) is positioned below the frequency random adjusting module (2), and the frequency random adjusting module (2) is positioned below the polarization random adjusting module (3); the multi-port excitation feed module (1), the frequency random adjusting module (2) and the polarization random adjusting module (3) jointly form a super-structure cavity; the bunching generation module (4) is positioned at a cavity (13) in the center of the super-structure cavity;
the multi-port excitation feed module (1) is provided with a plurality of excitation feed ports (5) at different positions, and the multi-port excitation feed module (1) receives electromagnetic wave signals of the plurality of excitation feed ports (5) respectively or simultaneously;
the multi-port excitation feed module (1) is a hollow cylindrical sunken flat plate, the sunken part is a flat bottom surface structure (12) and an annular side wall (11) which are formed by inward expansion of the surface of one side of the flat plate, and two sides of the sunken part are vertical structures so as to form a hollow hole (13) in the center;
the frequency random adjustment module (2) is an annular plate (21) with a super-structured surface (22) with structures with different reflection characteristics;
the polarization random adjustment module (3) is a hollow cover plate (31) engraved with a geometric pattern structure (32);
the geometric pattern structure (32) is an elliptical hole structure sparse array with different short axis lengths, different rotation angles and different arrangement positions;
the beam bunching generation module (4) is a circular horn antenna (42) with a specific opening angle (41);
the round horn antenna (42) is externally provided with a round table (43), and the beam bunching generation module (4) is arranged in a cavity (13) at the center of the multi-port excitation feed module (1) through the round table (43).
2. A millimeter wave frequency polarized dual random multi-port beamforming antenna according to claim 1, wherein the multi-port excitation feed module (1) passes the electromagnetic wave signal to the frequency randomizing module (2) and confines it within the metastructural cavity.
3. A millimeter wave frequency polarized dual random multi-port beamforming antenna according to claim 1, wherein the frequency randomizing module (2) is located on the recessed bottom surface of the multi-port excitation feed module (1).
4. A millimeter wave frequency polarized dual random multi-port beamforming antenna according to claim 1, wherein the metamaterial surface (22) is capable of generating widely varying reflection amplitude and reflection phase characteristics at different frequencies.
5. A millimeter wave frequency polarized dual random multi-port beamforming antenna according to claim 1, wherein the number of excitation feed ports (5) of the multi-port excitation feed module (1) is not less than two.
6. A millimeter wave frequency polarized dual random multi-port beamforming antenna according to claim 1, wherein the metamaterial surface (22) is composed of metamaterial units having different reflection amplitude and reflection phase characteristics, the reflection characteristics are different between different types of metamaterial units, and the same type of metamaterial unit can achieve low correlation reflection characteristics by changing a certain structural parameter.
7. The millimeter wave frequency-polarized dual-random multi-port beamforming antenna according to claim 1, wherein the effective operating bandwidth of the beamforming antenna covers 75GHz-85GHz band, and the overall radiation efficiency of the frequency-polarized dual-random multi-port beamforming antenna is higher than 85%; when the working frequency and the polarization state are fixed, the correlation of the random radiation pattern generated by different excitation feed ports (5) during working is lower than 0.3; the polarization state is fixed at the excitation feed port (5), and the correlation of the random radiation pattern generated by bunching under different working frequencies is lower than 0.3; the correlation of beam-forming random radiation patterns generated under different polarization states is lower than 0.3 when the power feeding port (5) is excited and the working frequency is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110077670.3A CN112909539B (en) | 2021-01-20 | 2021-01-20 | Millimeter wave frequency polarization dual-random multi-port beam-focusing antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110077670.3A CN112909539B (en) | 2021-01-20 | 2021-01-20 | Millimeter wave frequency polarization dual-random multi-port beam-focusing antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112909539A CN112909539A (en) | 2021-06-04 |
| CN112909539B true CN112909539B (en) | 2022-02-22 |
Family
ID=76117205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110077670.3A Active CN112909539B (en) | 2021-01-20 | 2021-01-20 | Millimeter wave frequency polarization dual-random multi-port beam-focusing antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112909539B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0629316A1 (en) * | 1992-12-03 | 1994-12-21 | Atx Telecom Systems, Inc. | Optical self-heterodyne remote antenna system |
| CN201716419U (en) * | 2010-03-16 | 2011-01-19 | 中国科学院遥感应用研究所 | Airborne Doppler/delay mapping receiver |
| CN105445711A (en) * | 2015-11-27 | 2016-03-30 | 南京信息工程大学 | Sea level essential factor SAR original data simulation method based on inverse Omega-K algorithm |
| CN112216978A (en) * | 2020-08-26 | 2021-01-12 | 西安交通大学 | Broadband random radiation antenna based on cavity radiation pattern coding |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4797682A (en) * | 1987-06-08 | 1989-01-10 | Hughes Aircraft Company | Deterministic thinned aperture phased antenna array |
| JP2005354595A (en) * | 2004-06-14 | 2005-12-22 | Nippon Hoso Kyokai <Nhk> | Lens antenna |
| CN100454776C (en) * | 2005-03-17 | 2009-01-21 | 西安交通大学 | Method for acquiring full marks set gain based on diagonal BLAST structure |
| WO2013116368A1 (en) * | 2012-01-30 | 2013-08-08 | University Of Iowa Research Foundation | Managing back pain by applying a high frequency electrical stimulus directly to the spinal cord |
| US9329255B2 (en) * | 2013-06-24 | 2016-05-03 | Raytheon Company | Imaging antenna and related techniques |
| WO2015189846A1 (en) * | 2014-06-10 | 2015-12-17 | Tag & Find Wireless Solutions Ltd. | Rfid reader and antenna system for locating items using a mobile device |
| US11255663B2 (en) * | 2016-03-04 | 2022-02-22 | May Patents Ltd. | Method and apparatus for cooperative usage of multiple distance meters |
| WO2019066622A1 (en) * | 2017-09-29 | 2019-04-04 | 엘지전자 주식회사 | Method for reporting channel state information in wireless communication system and apparatus therefor |
| CN110708100B (en) * | 2017-11-17 | 2021-03-05 | 华为技术有限公司 | Communication method, terminal and base station |
| CN109768385B (en) * | 2019-01-29 | 2020-03-17 | 西安交通大学 | Ultra-wideband high-capacity terahertz metamaterial random radiation antenna |
| CN112086747B (en) * | 2020-09-04 | 2021-04-20 | 西北工业大学 | Inflatable high-power microwave array antenna |
-
2021
- 2021-01-20 CN CN202110077670.3A patent/CN112909539B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0629316A1 (en) * | 1992-12-03 | 1994-12-21 | Atx Telecom Systems, Inc. | Optical self-heterodyne remote antenna system |
| CN201716419U (en) * | 2010-03-16 | 2011-01-19 | 中国科学院遥感应用研究所 | Airborne Doppler/delay mapping receiver |
| CN105445711A (en) * | 2015-11-27 | 2016-03-30 | 南京信息工程大学 | Sea level essential factor SAR original data simulation method based on inverse Omega-K algorithm |
| CN112216978A (en) * | 2020-08-26 | 2021-01-12 | 西安交通大学 | Broadband random radiation antenna based on cavity radiation pattern coding |
Non-Patent Citations (1)
| Title |
|---|
| 高分三号卫星聚束SAR误差补偿成像处理技术研究;陈琦等;《航天器工程》;20171215(第06期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112909539A (en) | 2021-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107275803B (en) | Millimeter wave lens reflection type intelligent antenna device | |
| Geyi | The method of maximum power transmission efficiency for the design of antenna arrays | |
| EP0390350B1 (en) | Low cross-polarization radiator of circularly polarized radiation | |
| Yang et al. | Generating multiple OAM based on a nested dual-arm spiral antenna | |
| KR20030039326A (en) | Dielectric resonator antenna array with steerable elements | |
| WO2008061107A2 (en) | Antenna | |
| JPH07221532A (en) | Phased array antenna | |
| Zhu et al. | Unified time-and frequency-domain study on time-modulated arrays | |
| JP2015050669A (en) | Antenna and sector antenna | |
| JPH07154136A (en) | Slot array antenna of double circularly polarized wave tem mode | |
| CN109768385B (en) | Ultra-wideband high-capacity terahertz metamaterial random radiation antenna | |
| CN108242600B (en) | Linearly polarized monopulse planar slot antenna | |
| CN112271444B (en) | High-gain dual-polarization SIW-CTS antenna array | |
| CN113851856A (en) | Broadband high-gain metal lens antenna based on four-ridge waveguide | |
| Wang et al. | A low-sidelobe-level variable inclination continuous transverse stub antenna with two-types stubs | |
| CN112909539B (en) | Millimeter wave frequency polarization dual-random multi-port beam-focusing antenna | |
| US11329388B2 (en) | Antenna for transmitting and/or receiving an electromagnetic wave, and system comprising this antenna | |
| Zhang et al. | Plane spiral orbital angular momentum wave and its applications | |
| TWI679803B (en) | Antenna system | |
| Jokanovic et al. | Advanced antennas for next generation wireless access | |
| Yang et al. | Millimeter wave dual polarization design using frequency selective surface (FSS) for 5G base-station applications | |
| CN205680784U (en) | Zigzag crossed slit circular polarisation cavity-backed radiator antenna | |
| Ghate et al. | Quasi-optical beamforming approach using vertically oriented dielectric wedges | |
| CN218975790U (en) | Positioning antenna and positioning system | |
| JP2005535209A (en) | Directional dual frequency antenna device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |