CN115494459A - Electronic reflector with reconfigurable polarization - Google Patents

Electronic reflector with reconfigurable polarization Download PDF

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Publication number
CN115494459A
CN115494459A CN202211261719.1A CN202211261719A CN115494459A CN 115494459 A CN115494459 A CN 115494459A CN 202211261719 A CN202211261719 A CN 202211261719A CN 115494459 A CN115494459 A CN 115494459A
Authority
CN
China
Prior art keywords
antenna
radio frequency
frequency integrated
polarization
transmitting antenna
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.)
Pending
Application number
CN202211261719.1A
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Chinese (zh)
Inventor
陈孝樟
陈强
付云起
郑月军
马燕利
隆岩
廖敦微
丁亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Institute Of Advanced Technology
National University of Defense Technology
Original Assignee
Tianjin Institute Of Advanced Technology
National University of Defense Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin Institute Of Advanced Technology, National University of Defense Technology filed Critical Tianjin Institute Of Advanced Technology
Priority to CN202211261719.1A priority Critical patent/CN115494459A/en
Publication of CN115494459A publication Critical patent/CN115494459A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/282—Transmitters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/245—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction provided with means for varying the polarisation 
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The application relates to a polarization reconfigurable electron reflector comprising: the radio frequency integrated array comprises a receiving antenna array, a transmitting antenna array, a radio frequency integrated array and a controller; the receiving antenna array and/or the transmitting antenna array are/is a polarization reconfigurable antenna array; the receiving antenna array comprises a plurality of receiving antennas, the transmitting antenna array comprises a plurality of transmitting antennas, and the radio frequency integrated array comprises a plurality of radio frequency integrated modules; the receiving antenna, the transmitting antenna and the radio frequency integrated module are in one-to-one correspondence; one receiving antenna is connected with a corresponding radio frequency integrated module through an input wiring harness, and the radio frequency integrated module is connected with a corresponding transmitting antenna through an output wiring harness; the receiving antenna and the corresponding transmitting antenna meet the phase conjugation relation, and the lengths of the input wiring harness and the corresponding output wiring harness are equal; the controller is connected with each radio frequency integrated module. The method and the device can realize rapid regulation and control of the echo polarization information so as to adapt to the radar target echo polarization characteristic reconfigurable requirement.

Description

Polarization reconfigurable electronic reflector
Technical Field
The application relates to the technical field of radars, in particular to an electronic reflector with reconfigurable polarization.
Background
The reflector is a reflector which can focus a reflected radar wave signal and reversely reflect the signal along an original path in an incident direction within a certain radar wave incident angle range, generally has a strong backward scattering echo, and is widely applied to the fields of radar target positioning, remote sensing reconnaissance and the like. Common reflectors include corner reflectors, luneberg lenses, retro-directive antenna arrays, and the like.
The radar target characteristics of the conventional passive reflector are fixed after the design and the design of the conventional passive reflector are shaped, and the characteristics of the radar echo such as amplitude, phase and polarization do not have the regulation and control capability. Therefore, the regulation of the characteristics of the amplitude, the phase, the polarization and the like of the echo of the reflector can be realized by adding a mechanical or electronic regulation device into the passive reflector.
However, the regulation in the prior art is limited to modulating the phase and polarization characteristics of the echo, and the rapid regulation of the polarization information of the echo cannot be realized.
Disclosure of Invention
Therefore, in order to solve the technical problems, a polarization reconfigurable electronic reflector is needed to be provided, which can realize fast regulation and control of echo polarization information so as to meet the requirement of radar target echo polarization characteristic reconfiguration.
A polarization reconfigurable electron reflector, comprising: the radio frequency integrated array comprises a receiving antenna array, a transmitting antenna array, a radio frequency integrated array and a controller;
the receiving antenna array and/or the transmitting antenna array are polarization reconfigurable antenna arrays;
the receiving antenna array comprises a plurality of receiving antennas, the transmitting antenna array comprises a plurality of transmitting antennas, and the radio frequency integrated array comprises a plurality of radio frequency integrated modules; the receiving antenna, the transmitting antenna and the radio frequency integrated module are in one-to-one correspondence;
one receiving antenna is connected with a corresponding radio frequency integrated module through an input wiring harness, and the radio frequency integrated module is connected with a corresponding transmitting antenna through an output wiring harness; the receiving antenna and the corresponding transmitting antenna meet the phase conjugation relation, and the lengths of the input wiring harness and the corresponding output wiring harness are equal;
the controller is connected with each radio frequency integrated module.
In one embodiment, each radio frequency integrated module comprises: two single pole double throw switches and an amplifier;
the two single-pole double-throw switches are respectively connected with the corresponding receiving antenna and the corresponding transmitting antenna, and the amplifier is simultaneously connected with the two single-pole double-throw switches.
In one embodiment, the input harness is connected to an input of a radio frequency integrated module, and the output harness is connected to an output of the radio frequency integrated module.
In one embodiment, the controller is connected with a single-pole double-throw switch of the radio frequency integrated module to control the switching of channel states.
In one embodiment, an amplifier and a phase shifter are loaded in the transmit antenna or the receive antenna to enable control of the echo amplitude and phase characteristics of the electron reflector.
In one embodiment, the transmit antenna or the receive antenna is switched polarization state by a single pole double throw switch or a diode.
In one embodiment, the transmit antenna or the receive antenna is a linearly polarized antenna with switching between a horizontal polarization state and a vertical polarization state.
In one embodiment, the transmitting antenna or the receiving antenna is a linearly polarized antenna switched between a left-hand circular polarization state and a right-hand circular polarization state.
The electronic reflector with reconfigurable polarization is provided for the radar target echo polarization characteristic regulation and control requirement, the polarization characteristics of reflected echoes can be changed according to the requirement, and the reconstruction of the echo polarization characteristics is realized by taking the polarization reconfigurable antenna as an array element of a direction backtracking antenna array and controlling the polarization directions of all or part of the array elements, wherein the reconstruction comprises the occupation ratios of different polarized wave components in echoes, time domain change characteristics of the echo polarization characteristics and the like. In addition, the electronic control mode can also be used for programming and configuring reconfigurable polarization, a user can preset the time domain on-off state of each channel and store the time domain on-off state into the controller, and the user can also communicate with the controller through a computer and other upper computers to realize real-time control and simulate the expected echo polarization characteristics of different types of targets, and as for a specific modulation algorithm, the method can be realized by adopting the prior art.
Drawings
FIG. 1 is a schematic diagram of a polarization reconfigurable electron reflector in one embodiment;
FIG. 2 is a schematic diagram of an embodiment of polarization reconfigurable electron reflectors operating on signal polarization reconfiguration;
fig. 3 is a schematic diagram of a transmit-receive antenna array of a polarization reconfigurable electronic reflector in one embodiment.
FIG. 4 is a schematic diagram illustrating the operation of a polarization reconfigurable electron reflector in one embodiment.
Reference numerals:
a receiving antenna array 11, a first receiving antenna 111, a second receiving antenna 112, a transmitting antenna array 12, a first transmitting antenna 121, a second transmitting antenna 122;
an input harness 21, a first input harness 211, a second input harness 212, an output harness 22, a first output harness 221, a second output harness 222;
the radio frequency integrated module 3, the single-pole double-throw switch 31, the first single-pole double-throw switch 311, the second single-pole double-throw switch 312 and the amplifier 32;
a controller 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
As shown in fig. 1, the present application provides a polarization reconfigurable electron reflector, comprising, in one embodiment: a receiving antenna array 11, a transmitting antenna array 12, a radio frequency integrated array and a controller 4;
the receiving antenna array 11 and/or the transmitting antenna array 12 are polarization reconfigurable antenna arrays;
the receiving antenna array 11 comprises a plurality of receiving antennas, the transmitting antenna array 12 comprises a plurality of transmitting antennas, and the radio frequency integrated array comprises a plurality of radio frequency integrated modules 3; the receiving antenna, the transmitting antenna and the radio frequency integrated module 3 are in one-to-one correspondence;
one receiving antenna is connected with a corresponding radio frequency integrated module through an input wiring harness, and the radio frequency integrated module is connected with a corresponding transmitting antenna through an output wiring harness; the receiving antenna and the corresponding transmitting antenna meet the phase conjugation relation, and the lengths of the input wiring harness and the corresponding output wiring harness are equal;
the controller is connected with each radio frequency integrated module.
In the present embodiment, the receiving antenna array 11 and the transmitting antenna array 12 are both antenna arrays, the antenna arrays are formed by a plurality of identical antennas (antenna elements) passing through the array, the receiving antenna array 11 is formed by a plurality of identical receiving antennas passing through the array, and the transmitting antenna array 12 is formed by a plurality of identical transmitting antennas passing through the array. The receiving antenna array 11 and the transmitting antenna array 12 form a polarization reconfigurable backtracking antenna array.
The receiving antenna array 11 and the transmitting antenna array 12 may be different antenna arrays, but at least one antenna array is a polarization reconfigurable antenna array, and at least one antenna array is composed of polarization reconfigurable antennas, that is: in two kinds of antenna array elements of polarization reconfigurable backtracking antenna array, at least one kind of antenna array element is polarization reconfigurable antenna, that is to say: the receiving antenna is a polarization reconfigurable antenna, or the transmitting antenna is a polarization reconfigurable antenna, or both the receiving antenna and the transmitting antenna are polarization reconfigurable antennas. The type and number of specific polarization reconfigurable antennas (antenna elements) can be selected according to the prior art and practical requirements. The bandwidth and the beam width of the antenna array elements determine the bandwidth and the space coverage range of the electronic reflector, and can be selected according to actual needs.
In one embodiment, the transmit antenna or the receive antenna is a linearly polarized antenna with switching between a horizontal polarization state and a vertical polarization state. That is, the transmitting antenna is a linearly polarized antenna in a horizontal polarization state, and the receiving antenna is a linearly polarized antenna in a vertical polarization state; or: the transmitting antenna is a linear polarization antenna in a vertical polarization state, and the receiving antenna is a linear polarization antenna in a horizontal polarization state.
In one embodiment, the transmitting antenna or the receiving antenna is a linearly polarized antenna switched between a left-hand circular polarization state and a right-hand circular polarization state. That is, the transmitting antenna is a linearly polarized antenna in a left-handed circularly polarized state, and the receiving antenna is a linearly polarized antenna in a right-handed circularly polarized state; or: the transmitting antenna is a linearly polarized antenna in a right-hand circularly polarized state, and the receiving antenna is a linearly polarized antenna in a left-hand circularly polarized state.
The receiving antenna, the transmitting antenna and the radio frequency integrated module are in one-to-one correspondence, that is, the receiving antenna and the radio frequency integrated module are in one-to-one correspondence, and meanwhile, the transmitting antenna and the radio frequency integrated module are in one-to-one correspondence, that is, one radio frequency integrated module is arranged, and the receiving antenna and the transmitting antenna which correspond to the radio frequency integrated module are arranged at the same time. The number of the receiving antennas, the number of the transmitting antennas and the number of the radio frequency integrated modules are equal. A receiving antenna, an input wiring harness 21, a radio frequency integrated module, an output wiring harness 22 and a transmitting antenna are connected in sequence to form a polarization reconfigurable loop. The number of polarized reconfigurable loops in the reflector is equal to the number of radio frequency integrated modules. The receiving antenna, the radio frequency integrated module and the transmitting antenna which form a polarization reconfigurable loop correspond to each other.
The receiving antenna and the corresponding transmitting antenna are a pair of polarized reconfigurable antenna array elements with central symmetry positions, form a pair of receiving and transmitting antenna array elements, are connected by isometric transmission lines to meet a phase conjugation relation, and the receiving antenna array and the transmitting antenna array also meet the phase conjugation relation, so that an echo is still reflected back along the incident direction of radar waves.
The input harness 21 connects the antenna elements on the receiving antenna array with the input end of the corresponding radio frequency integrated module, and the output harness 22 connects the antenna elements on the transmitting antenna array 12 with the output end of the corresponding radio frequency integrated module.
The total length of the wire harness connecting each pair of transceiving antenna elements, i.e. the total length of a group of input wire harness and output wire harness, is the same, i.e. the length of all input wire harness and all output wire harness is equal.
The controller is connected with the receiving antenna and the transmitting antenna through the radio frequency integrated module.
In one embodiment, each radio frequency integrated module 3 comprises: two single pole double throw switches 31 and an amplifier 32; the two single-pole double-throw switches 31 are respectively connected with the corresponding receiving antenna and the corresponding transmitting antenna, and the amplifier 32 is simultaneously connected with the two single-pole double-throw switches 31.
The controller 4 is connected to two single-pole double-throw switches 31 of the rf integrated module 3 to control the switching of the channel state, and therefore, the controller may also be referred to as a polarization reconfigurable controller.
One input wiring harness comprises two input small wires, wherein one input small wire is connected with a receiving antenna and one end point of a single-pole double-throw switch in a radio frequency integrated module corresponding to the receiving antenna, and the other input small wire is connected with the receiving antenna and the other end point of the single-pole double-throw switch in the radio frequency integrated module corresponding to the receiving antenna. Similarly, one output wire harness comprises two output small wires, wherein one output small wire is connected with the transmitting antenna and one end point of the other single-pole double-throw switch in the radio frequency integrated module corresponding to the transmitting antenna, and the other output small wire is connected with the transmitting antenna and the other end point of the other single-pole double-throw switch in the radio frequency integrated module corresponding to the transmitting antenna.
The working process of the application is as follows: the receiving antenna receives signals and inputs the signals into the radio frequency integrated module, and the signals are output to the transmitting antenna from the output end of the radio frequency integrated module for transmission after being processed.
The working principle of the application for the polarization reconstruction of the backtracking signal is as follows: the polarization reconfigurable antenna array element (namely a transmitting antenna or a receiving antenna) realizes electronic switching of a polarization state through active switching elements such as a single-pole double-throw switch (namely SPDT) or a diode (for example a PIN diode); as regards the specific positions of the spdt and the diode in the antenna element, and how to implement the electronic switching of the polarization state, it is known in the art to provide: on the antenna or on the back-end circuit. Elements such as an amplifier, a phase shifter and the like are added in a polarization reconfigurable antenna array element (namely a transmitting antenna or a receiving antenna) so as to realize the control of the echo amplitude and phase characteristics of the electronic reflector; the specific positions of the elements such as the amplifier and the phase shifter in the antenna array element and how to realize the control of the amplitude and phase characteristics of the echo belong to the prior art, and are not described herein again. The polarization reconfigurable controller controls the polarization direction of the partial polarization reconfigurable antenna array element according to requirements so as to realize control of different polarization components in the echo of the electronic reflector; the control signal output by the polarization reconfigurable controller 4 controls the rapid switching of the states of the SPDT 31 channels in all the radio frequency integrated modules 3, and the switching frequency and the timing sequence of the control signal can be set in the polarization reconfigurable controller 4.
The electronic reflector with reconfigurable polarization is provided for the radar target echo polarization characteristic regulation and control requirements, the polarization characteristics of reflected echoes can be changed according to requirements, the reconfigurable echo polarization characteristic can be reconfigured by taking the polarization reconfigurable antenna as an array element of a direction backtracking antenna array and controlling the polarization directions of all or part of the array elements, the reconfiguration of the echo polarization characteristic is realized, the method comprises the steps of adjusting the occupation ratios of different polarization wave components in echoes by adjusting the occupation ratios of the array elements in different polarization modes, and the time domain change characteristics of the echo polarization characteristic are constructed by switching active switching devices at different moments. In addition, the electronic control mode can also be used for polarization reconfigurable programming and configuration, a user can preset the time domain on-off state of each channel and store the time domain on-off state into the controller, and the time domain on-off state can also be communicated with the controller through a computer and other upper computers to realize real-time control and simulate the expected echo polarization characteristics of different types of targets, and the specific modulation algorithm can be realized by adopting the prior art.
As shown in fig. 1, in the reflector of one embodiment, the antenna elements are dual-wire polarized antennas controllable by SPDT, and each rf integrated module 3 includes two single-pole double-throw switches 31 (i.e., SPDT) and an amplifier 32. The SPDTs 31 and the amplifiers 32 of all the radio frequency integrated modules 3 are controlled by a polarization reconfigurable controller 4 to ensure that the receiving antenna array 11 and the transmitting antenna array 12 are in a phase conjugate state under different phase states, so that the direction of the reflected beam is consistent with the direction of the incident beam of the radar wave.
As shown in fig. 2, the receiving antenna array 11 and the transmitting antenna array 12 both use 4 × 4 element antenna arrays, and the number of the rf integrated modules 3 is 16. After the horizontally polarized radar wave received by the first receiving antenna 111 passes through the first input harness 211, the polarization reconfigurable controller 4 controls the first single-pole double-throw switch 311 to select and input the vertically polarized port of the first transmitting antenna 121, and the horizontally polarized radar wave is sent to the first transmitting antenna 121 through the first output harness 221, so that the horizontally polarized radar incoming wave becomes an echo wave with vertical polarization after being amplified; after the horizontally polarized radar wave received by the second receiving antenna 112 passes through the second input harness 212, the polarization reconfigurable controller 4 controls the second single-pole double-throw switch 312 to select and input the vertical polarized port of the second transmitting antenna 122, and the horizontally polarized radar wave is sent to the second transmitting antenna 122 through the second output harness 222, so that the horizontally polarized radar incoming wave becomes an echo wave with vertical polarization after being amplified; the principle of the remaining 14 signals is similar.
As shown in fig. 3, by independently setting the polarization reconfigurable controller 4 of each path, the ratio of the antennas in the two polarization directions can be adjusted as needed. Two orthogonal polarization echoes with different proportions are superposed in space, so that the receiving of incoming waves with different polarization directions and the transmitting of the echoes with different polarization directions are realized.
As shown in fig. 4, by controlling the on-off state of the first single-pole double-throw switch 311 connected to the first transmitting antenna 121, different output small lines of the first output harness 221 are selected, so that signals are selected to be input to different polarization channels of the antenna, transmission of signals in different polarization directions is realized, and the purpose of polarization reconfiguration is achieved. The operation of the remaining receive/transmit antenna elements is similar.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (8)

1. A polarization reconfigurable electron reflector, comprising: the system comprises a receiving antenna array, a transmitting antenna array, a radio frequency integrated array and a controller;
the receiving antenna array and/or the transmitting antenna array are polarization reconfigurable antenna arrays;
the receiving antenna array comprises a plurality of receiving antennas, the transmitting antenna array comprises a plurality of transmitting antennas, and the radio frequency integrated array comprises a plurality of radio frequency integrated modules; the receiving antenna, the transmitting antenna and the radio frequency integrated module are in one-to-one correspondence;
one receiving antenna is connected with a corresponding radio frequency integrated module through an input wiring harness, and the radio frequency integrated module is connected with a corresponding transmitting antenna through an output wiring harness; the receiving antenna and the corresponding transmitting antenna meet the phase conjugation relation, and the lengths of the input wiring harness and the corresponding output wiring harness are equal;
the controller is connected with each radio frequency integrated module.
2. The electronic reflector of claim 1, wherein each radio frequency integrated module comprises: two single pole double throw switches and an amplifier;
the two single-pole double-throw switches are respectively connected with the corresponding receiving antenna and the corresponding transmitting antenna, and the amplifier is simultaneously connected with the two single-pole double-throw switches.
3. The electronic reflector of claim 1 or 2, wherein the input harness is connected to an input of a radio frequency integrated module and the output harness is connected to an output of the radio frequency integrated module.
4. The electronic reflector of claim 1 or 2, wherein the controller is connected to a single pole double throw switch of the rf integrated module to control the switching of channel states.
5. An electron reflector according to claim 1 or 2, characterized in that an amplifier and a phase shifter are incorporated in the transmitting antenna or the receiving antenna to enable control of the echo amplitude and phase characteristics of the electron reflector.
6. The electronic reflector of claim 1 or 2, wherein the transmit antenna or the receive antenna is switched in polarization state by a single pole double throw switch or a diode.
7. An electronic reflector according to claim 1 or 2, characterized in that the transmitting antenna or the receiving antenna is a linearly polarized antenna with switching between a horizontal polarization state and a vertical polarization state.
8. The electronic reflector of claim 1 or 2, wherein the transmit antenna or the receive antenna is a linearly polarized antenna switched between a left-hand circular polarization state and a right-hand circular polarization state.
CN202211261719.1A 2022-10-14 2022-10-14 Electronic reflector with reconfigurable polarization Pending CN115494459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211261719.1A CN115494459A (en) 2022-10-14 2022-10-14 Electronic reflector with reconfigurable polarization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211261719.1A CN115494459A (en) 2022-10-14 2022-10-14 Electronic reflector with reconfigurable polarization

Publications (1)

Publication Number Publication Date
CN115494459A true CN115494459A (en) 2022-12-20

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Application Number Title Priority Date Filing Date
CN202211261719.1A Pending CN115494459A (en) 2022-10-14 2022-10-14 Electronic reflector with reconfigurable polarization

Country Status (1)

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