CN110572210A - multi-user laser communication system and method with flexibly controlled wave beams - Google Patents
multi-user laser communication system and method with flexibly controlled wave beams Download PDFInfo
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- CN110572210A CN110572210A CN201910702743.6A CN201910702743A CN110572210A CN 110572210 A CN110572210 A CN 110572210A CN 201910702743 A CN201910702743 A CN 201910702743A CN 110572210 A CN110572210 A CN 110572210A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
Abstract
The invention discloses a multi-user laser communication system and a method for flexibly controlling wave beams, wherein the system comprises: the multi-wavelength optical system comprises a multi-beam optical phased array antenna, a multi-wavelength light transmitting module and a multi-wavelength light receiving module; the multi-wavelength light emitting module outputs a digitally modulated light signal and sends the light signal to the multi-beam optical phased array antenna, and the multi-beam optical phased array antenna emits the digitally modulated light signal; the multi-beam optical phased array antenna receives the optical signal and sends the optical signal to the multi-wavelength optical receiving module, and the multi-wavelength optical receiving module demodulates the optical signal to obtain a digital signal. The invention has the advantages of small volume, high integration level and flexible multi-beam control.
Description
Technical Field
the invention belongs to the technical field of satellite laser communication, and particularly relates to a multi-user laser communication system and method for flexibly controlling beams.
Background
In recent years, the space laser communication technology is rapidly developed, and an inter-satellite and inter-satellite high-speed laser communication demonstration verification system is successfully established abroad. With the development of space laser communication technology, an inter-satellite laser communication link is developed to a space laser communication network, which needs to implement communication between one user and a plurality of users. The optical phased array antenna researched at present mainly realizes beam scanning control, and a laser communication terminal of the optical phased array antenna integrating receiving and transmitting is not provided, so that the integration level is low, the size is large, and beams are not easy to flexibly control.
Disclosure of Invention
The technical problem solved by the invention is as follows: the multi-user laser communication system and the method for flexibly controlling the beams overcome the defects of the prior art, and have the advantages of small size, high integration level and flexible multi-beam control.
The purpose of the invention is realized by the following technical scheme: according to an aspect of the present invention, there is provided a multi-user laser communication system with beam flexible control, including: the multi-wavelength optical system comprises a multi-beam optical phased array antenna, a multi-wavelength light transmitting module and a multi-wavelength light receiving module; the multi-wavelength light emitting module outputs a digitally modulated light signal and sends the light signal to the multi-beam optical phased array antenna, and the multi-beam optical phased array antenna emits the digitally modulated light signal; the multi-beam optical phased array antenna receives the optical signal and sends the optical signal to the multi-wavelength optical receiving module, and the multi-wavelength optical receiving module demodulates the optical signal to obtain a digital signal.
in the multi-user laser communication system with flexibly controlled beams, the multi-beam optical phased array antenna comprises an optical emission signal phase shifter, an optical receiving signal phase shifter, N optical polarization splitters and N antenna units; the optical transmission signal phase shifter comprises M1 multiplied by N optical splitters, M multiplied by N transmission optical phase shifters and N M multiplied by 1 optical combiners; the light receiving signal phase shifter comprises M NxM light combining devices, NxM receiving light phase shifters and N1 xM light splitting devices; the multi-wavelength optical emission module outputs M paths of optical signals with different wavelengths and sends each path of optical signal to the corresponding 1 xN optical splitter, each path of optical signal is divided into N paths of first optical signals through the 1 xN optical splitter, each path of first optical signal is sent to the corresponding transmitting optical phase shifter, then the N paths of first optical signals are respectively subjected to phase shifting through the N transmitting optical phase shifters, the N paths of phase-shifted first optical signals are respectively sent to the corresponding M x 1 optical couplers, the phase-shifted first optical signals output by the N M x 1 optical couplers are respectively sent to the N antenna units through the corresponding light polarization splitters, and the N antenna units form M beams to be emitted; the N antenna units receive optical multi-beam phased array antenna signals, each antenna unit transmits the received optical multi-beam phased array antenna signals to a corresponding 1 multiplied by M optical splitter through a corresponding optical polarization splitter to form N paths of received optical signals, each path of received optical signals are phase-shifted by a corresponding received optical phase shifter and then sent to a corresponding N multiplied by 1 optical combiner to form M paths of combined beam signals, the M paths of combined beam signals are sent to a multi-wavelength optical receiving module, and the multi-wavelength optical receiving module demodulates the M paths of combined beam signals respectively to obtain electric signals.
In the multi-user laser communication system with flexibly controlled beam, the phase shift amount of the emitted light phase shifterthe following equation is given:Wherein k isr＝wr/c，krwave number, c is speed of light, d is spacing between two adjacent antenna elements, N is number of antenna elements, wrTheta is the optical wave frequency of the first optical signal, and theta is the antenna main lobe beam pointing angle.
In the multi-user laser communication system with flexibly controlled wave beams, the phase shift phi of the optical phase shifter is receivedn' is derived from the following equation: phi is an'＝-Nkr'd sin theta; wherein k isr'＝wr'/c，kr' is the wave number, c is the speed of light, d is the spacing between two adjacent antenna elements, N is the number of antenna elements, wr' is the optical wave frequency of the received optical signal, and theta is the antenna main lobe beam pointing angle.
According to another aspect of the present invention, there is also provided a multi-user laser communication method with beam flexible control, the method including the steps of: the multi-wavelength light emitting module outputs M paths of optical signals with different wavelengths, each path of optical signal is sent to a corresponding 1 xN optical splitter, each path of optical signal is divided into N paths of first optical signals through the 1 xN optical splitter, each path of first optical signal is sent to a corresponding transmitting optical phase shifter, then the N paths of first optical signals are respectively subjected to phase shifting through the N transmitting optical phase shifters, the N paths of phase-shifted first optical signals are respectively sent to the corresponding M x 1 optical splitters, the phase-shifted first optical signals output by the N M x 1 optical splitters are respectively sent to N antenna units through the corresponding optical polarization splitters, and the N antenna units form M beams to be emitted; n antenna units receive multi-beam phased array antenna signals, each antenna unit transmits the received multi-beam phased array antenna signals to a corresponding 1 multiplied by M optical splitter through a corresponding optical polarization splitter to form N paths of received optical signals, each path of received optical signals are subjected to phase shifting through a corresponding received optical phase shifter and then are sent to a corresponding N multiplied by 1 optical combiner to form M paths of combined beam signals, the M paths of combined beam signals are sent to a multi-wavelength optical receiving module, and the multi-wavelength optical receiving module demodulates the M paths of combined beam signals respectively to obtain electric signals.
in the multi-user laser communication method with flexibly controlled beam, the phase shift amount of the emitted light phase shifterthe following equation is given:wherein k isr＝wr/c，krwave number, c is speed of light, d is spacing between two adjacent antenna elements, N is number of antenna elements, wrIs a first optical signalTheta is the antenna main lobe beam pointing angle.
In the multi-user laser communication method for flexibly controlling the wave beam, the phase shift phi of the optical phase shifter is receivedn' is derived from the following equation: phi is an'＝-Nkr' d sin θ; wherein k isr'＝wr'/c，kr' is the wave number, c is the speed of light, d is the spacing between two adjacent antenna elements, N is the number of antenna elements, wr' is the optical wave frequency of the received optical signal, and theta is the antenna main lobe beam pointing angle.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention realizes the generation of multi-user optical link and the sharing of transmitting and receiving signals by combining a multi-wavelength optical transmitting/receiving module, an optical multiplexer/combiner (wavelength division multiplexer) and a polarization beam splitter;
(2) The invention adopts the technology of separating the common antenna unit, the transmitting optical phase shifter and the receiving optical phase shifter, and realizes the flexible control of multi-beam and the receiving and transmitting integrated design of the laser communication terminal.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
Fig. 1 is a block diagram of a multi-user laser communication system with beam flexible control according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of beam deflection pointing of an antenna array according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a block diagram of a multi-user laser communication system with beam flexible control according to an embodiment of the present invention. As shown in fig. 1, the multi-user laser communication system with flexibly controlled beams includes: the multi-wavelength optical system comprises a multi-beam optical phased array antenna, a multi-wavelength light transmitting module and a multi-wavelength light receiving module; wherein the content of the first and second substances,
The multi-wavelength light emitting module outputs a digitally modulated light signal and sends the light signal to the multi-beam optical phased array antenna, and the multi-beam optical phased array antenna emits the digitally modulated light signal;
The multi-beam optical phased array antenna receives the optical signal and sends the optical signal to the multi-wavelength optical receiving module, and the multi-wavelength optical receiving module demodulates the optical signal to obtain a digital signal.
The multi-beam optical phased array antenna comprises an optical emission signal phase shifter, an optical receiving signal phase shifter, N optical polarization splitters and N antenna units; wherein the content of the first and second substances,
The optical transmission signal phase shifter comprises M1 multiplied by N optical splitters, M multiplied by N transmission optical phase shifters and N M multiplied by 1 optical combiners;
the light receiving signal phase shifter comprises M NxM light combining devices, NxM receiving light phase shifters and N1 xM light splitting devices;
The multi-wavelength optical emission module outputs M paths of optical signals with different wavelengths and sends each path of optical signal to the corresponding 1 xN optical splitter, each path of optical signal is divided into N paths of first optical signals through the 1 xN optical splitter, each path of first optical signal is sent to the corresponding transmitting optical phase shifter, then the N paths of first optical signals are respectively subjected to phase shifting through the N transmitting optical phase shifters, the N paths of phase-shifted first optical signals are respectively sent to the corresponding M x 1 optical couplers, the phase-shifted first optical signals output by the N M x 1 optical couplers are respectively sent to the N antenna units through the corresponding light polarization splitters, and the N antenna units form M beams to be emitted;
n antenna units receive multi-beam phased array antenna signals, each antenna unit transmits the received multi-beam phased array antenna signals to a corresponding 1 multiplied by M optical splitter through a corresponding optical polarization splitter to form N paths of received optical signals, each path of received optical signals are subjected to phase shifting through a corresponding received optical phase shifter and then are sent to a corresponding N multiplied by 1 optical combiner to form M paths of combined beam signals, the M paths of combined beam signals are sent to a multi-wavelength optical receiving module, and the multi-wavelength optical receiving module demodulates the M paths of combined beam signals respectively to obtain electric signals.
Phase shift amount of emitted light phase shifterThe following equation is given:
wherein k isr＝wr/c，krWave number, c is speed of light, d is spacing between two adjacent antenna elements, N is number of antenna elements, wrTheta is the optical wave frequency of the first optical signal, and theta is the antenna main lobe beam pointing angle.
Phase shift phi of receiving optical phase shiftern' is derived from the following equation:
φn'＝-Nkr'd sinθ；
Wherein k isr'＝wr'/c，kr' is the wave number, c is the speed of light, d is the spacing between two adjacent antenna elements, N is the number of antenna elements, wr' is the optical wave frequency of the received optical signal, and theta is the antenna main lobe beam pointing angle.
the embodiment also provides a multi-user laser communication method for beam flexible control, which comprises the following steps:
the multi-wavelength light emitting module outputs M paths of optical signals with different wavelengths, each path of optical signal is sent to a corresponding 1 xN optical splitter, each path of optical signal is divided into N paths of first optical signals through the 1 xN optical splitter, each path of first optical signal is sent to a corresponding transmitting optical phase shifter, then the N paths of first optical signals are respectively subjected to phase shifting through the N transmitting optical phase shifters, the N paths of phase-shifted first optical signals are respectively sent to the corresponding M x 1 optical splitters, the phase-shifted first optical signals output by the N M x 1 optical splitters are respectively sent to N antenna units through the corresponding optical polarization splitters, and the N antenna units form M beams to be emitted;
N antenna units receive multi-beam phased array antenna signals, each antenna unit transmits the received multi-beam phased array antenna signals to a corresponding 1 multiplied by M optical splitter through a corresponding optical polarization splitter to form N paths of received optical signals, each path of received optical signals are subjected to phase shifting through a corresponding received optical phase shifter and then are sent to a corresponding N multiplied by 1 optical combiner to form M paths of combined beam signals, the M paths of combined beam signals are sent to a multi-wavelength optical receiving module, and the multi-wavelength optical receiving module demodulates the M paths of combined beam signals respectively to obtain electric signals.
in particular, the method comprises the following steps of,
(1) And M paths of output ports of the multi-wavelength light emitting module are connected with input interfaces of M1 multiplied by N optical dividers of the multi-beam optical phased array antenna, and M paths of optical signals output by the multi-wavelength light emitting module are sent to the multi-beam optical phased array antenna. The multi-wavelength optical emission module adopts wavelength division multiplexing technology, multi-user digital signals are respectively modulated to different wavelengths, and M paths of optical signals with different wavelengths are output.
(2) for each path of optical signals with different wavelengths, firstly dividing the optical signals into N paths by a 1 multiplied by N optical splitter, then respectively shifting the phase of the N paths of optical signals by N optical phase shifters, respectively sending the optical signals after phase shifting to N multiplied by 1 optical combiners, and respectively sending the optical signals after phase shifting output by the N multiplied by 1 optical combiners to N antenna units;
(3) for the optical signals with different wavelengths of M paths, the optical signals respectively pass through the respective 1 multiplied by N optical splitters and N optical phase shifters and then are sent into N MX 1 optical combiners, and the optical signals output by the N MX 1 optical combiners are respectively sent into N antenna units through N transceiving polarization beam splitters. Each antenna unit receives optical signals after M paths of optical wavelength splitting; for each path of wavelength signal, corresponding to a beam, the beam is formed by N antenna units respectively;
(4) the N antenna units form M wave beams, the wave beams are independently and flexibly controlled respectively, and optical signals output by a plurality of wavelengths are transmitted through the M wave beams;
(5) for receiving optical signals, the transmission path of the optical signals is opposite to that of the emitted light beams, multi-beam phased array antenna signals received by the multi-wavelength optical phased array antenna are respectively received by the N antenna units, and for each beam, the multi-beam phased array antenna signals are sequentially sent to the subsequent polarization beam splitter and the N1 xM optical splitters to form N paths of optical signals;
(6) N optical signals are respectively sent to N optical phase shifters, and the N optical phase shifters are respectively connected with M Nx 1 optical combiner; the N paths of signals are respectively phase-shifted and then sent into M Nx 1 optical combiners to form M paths of combined beam signals, and for each M paths of combiners, optical signals with the same wavelength are input; wherein the light phase shift amount and the light emission phase shift amount coincide.
(7) The optical signals combined by the M Nx 1 optical combiners are sent to the multi-wavelength light receiving module, and the multi-wavelength light signals are respectively demodulated to recover the electric signals.
(8) The phase shift control method in step (3) and step (6) adopts phased array antenna beam phase shift control technology, and a schematic diagram thereof is given by fig. 2. The deflection angle of each beam and the phase shift control unit phase shift of each beam are in one-to-one correspondence. After the relation between the light beam and the antenna unit is determined, the phase shift amount of each phase shifter is calculated according to the deflection angle of each beam, and beam deflection control is realized. For any one of M wave beams formed by the multi-beam optical phased-array antenna, firstly, the phase shift quantity of each phase shifter corresponding to the wave beam is calculated according to the wave beam pointing requirement
The above-described embodiments are merely preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (7)
1. A multi-user laser communication system with beam agile control, comprising: the multi-wavelength optical system comprises a multi-beam optical phased array antenna, a multi-wavelength light transmitting module and a multi-wavelength light receiving module; wherein the content of the first and second substances,
the multi-wavelength light emitting module outputs a digitally modulated light signal and sends the light signal to the multi-beam optical phased array antenna, and the multi-beam optical phased array antenna emits the digitally modulated light signal;
The multi-beam optical phased array antenna receives the optical signal and sends the optical signal to the multi-wavelength optical receiving module, and the multi-wavelength optical receiving module demodulates the optical signal to obtain a digital signal.
2. the beam agile multi-user laser communication system of claim 1 wherein: the multi-beam optical phased array antenna comprises an optical emission signal phase shifter, an optical receiving signal phase shifter, N optical polarization splitters and N antenna units; wherein the content of the first and second substances,
The optical transmission signal phase shifter comprises M1 multiplied by N optical splitters, M multiplied by N transmission optical phase shifters and N M multiplied by 1 optical combiners;
The light receiving signal phase shifter comprises M NxM light combining devices, NxM receiving light phase shifters and N1 xM light splitting devices;
the multi-wavelength optical emission module outputs M paths of optical signals with different wavelengths and sends each path of optical signal to the corresponding 1 xN optical splitter, each path of optical signal is divided into N paths of first optical signals through the 1 xN optical splitter, each path of first optical signal is sent to the corresponding transmitting optical phase shifter, then the N paths of first optical signals are respectively subjected to phase shifting through the N transmitting optical phase shifters, the N paths of phase-shifted first optical signals are respectively sent to the corresponding M x 1 optical couplers, the phase-shifted first optical signals output by the N M x 1 optical couplers are respectively sent to the N antenna units through the corresponding light polarization splitters, and the N antenna units form M beams to be emitted;
The N antenna units receive optical multi-beam phased array antenna signals, each antenna unit transmits the received optical multi-beam phased array antenna signals to a corresponding 1 multiplied by M optical splitter through a corresponding optical polarization splitter to form N paths of received optical signals, each path of received optical signals are phase-shifted by a corresponding received optical phase shifter and then sent to a corresponding N multiplied by 1 optical combiner to form M paths of combined beam signals, the M paths of combined beam signals are sent to a multi-wavelength optical receiving module, and the multi-wavelength optical receiving module demodulates the M paths of combined beam signals respectively to obtain electric signals.
3. The beam agile multi-user laser communication system of claim 1 wherein: phase shift amount of emitted light phase shifterThe following equation is given:
wherein k isr＝wr/c，krWave number, c is speed of light, d is spacing between two adjacent antenna elements, N is number of antenna elements, wrTheta is the optical wave frequency of the first optical signal, and theta is the antenna main lobe beam pointing angle.
4. The beam agile multi-user laser communication system of claim 1 wherein: phase shift phi of receiving optical phase shiftern' is derived from the following equation:
φn'＝-Nkr'dsinθ；
wherein k isr'＝wr'/c，kr' is the wave number, c is the speed of light, d is the spacing between two adjacent antenna elements, N is the number of antenna elements, wr' is the optical wave frequency of the received optical signal, and theta is the antenna main lobe beam pointing angle.
5. a multi-user laser communication method with beam flexible control, the method comprising the steps of:
The multi-wavelength light emitting module outputs M paths of optical signals with different wavelengths, each path of optical signal is sent to a corresponding 1 xN optical splitter, each path of optical signal is divided into N paths of first optical signals through the 1 xN optical splitter, each path of first optical signal is sent to a corresponding transmitting optical phase shifter, then the N paths of first optical signals are respectively subjected to phase shifting through the N transmitting optical phase shifters, the N paths of phase-shifted first optical signals are respectively sent to the corresponding M x 1 optical splitters, the phase-shifted first optical signals output by the N M x 1 optical splitters are respectively sent to N antenna units through the corresponding optical polarization splitters, and the N antenna units form M beams to be emitted;
N antenna units receive multi-beam phased array antenna signals, each antenna unit transmits the received multi-beam phased array antenna signals to a corresponding 1 multiplied by M optical splitter through a corresponding optical polarization splitter to form N paths of received optical signals, each path of received optical signals are subjected to phase shifting through a corresponding received optical phase shifter and then are sent to a corresponding N multiplied by 1 optical combiner to form M paths of combined beam signals, the M paths of combined beam signals are sent to a multi-wavelength optical receiving module, and the multi-wavelength optical receiving module demodulates the M paths of combined beam signals respectively to obtain electric signals.
6. The method of claim 5, wherein: phase shift amount of emitted light phase shifterthe following equation is given:
Wherein k isr＝wr/c，krwave number, c is speed of light, d is spacing between two adjacent antenna elements, N is number of antenna elements, wrTheta is the optical wave frequency of the first optical signal, and theta is the antenna main lobe beam pointing angle.
7. The method of claim 5, wherein: phase shift phi of receiving optical phase shiftern' is derived from the following equation:
φn'＝-Nkr'dsinθ；
Wherein k isr'＝wr'/c，kr' is the wave number, c is the speed of light, d is the spacing between two adjacent antenna elements, N is the number of antenna elements, wr' is the optical wave frequency of the received optical signal, and theta is the antenna main lobe beam pointing angle.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595647A (en) * | 2021-07-21 | 2021-11-02 | 联合微电子中心有限责任公司 | Photon beam forming unit, transmitting system and receiving system |
| CN113725717A (en) * | 2021-11-02 | 2021-11-30 | 浙江铖昌科技股份有限公司 | Two-dimensional lattice type multi-beam phased array and design method thereof |
| CN113960713A (en) * | 2021-10-21 | 2022-01-21 | 中国船舶重工集团公司第七二三研究所 | Broadband optical multi-beam integrated chip with flexibly controllable beam number |
| CN114844576A (en) * | 2022-04-19 | 2022-08-02 | 深圳市玖合鑫通讯技术有限公司 | Simulation signal generation device, beam forming simulation system and simulation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104834148A (en) * | 2015-04-27 | 2015-08-12 | 西安空间无线电技术研究所 | Bidirectional four-beam liquid crystal optical phased-array antenna and multi-user communication method thereof |
| CN105356943A (en) * | 2015-09-29 | 2016-02-24 | 西安空间无线电技术研究所 | Laser communication capturing and tracking system and method thereof |
| CN106533562A (en) * | 2016-11-30 | 2017-03-22 | 上海卫星工程研究所 | Spatial multiuser multi-system satellite laser communication system and method |
| US20180175501A1 (en) * | 2016-12-16 | 2018-06-21 | Samsung Electronics Co .. Ltd. | Beam steering optical phased arrays |
| CN108957900A (en) * | 2018-06-29 | 2018-12-07 | 西安空间无线电技术研究所 | A kind of multi-beam optical phased array antenna based on silicon substrate |
-
2019
- 2019-07-31 CN CN201910702743.6A patent/CN110572210A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104834148A (en) * | 2015-04-27 | 2015-08-12 | 西安空间无线电技术研究所 | Bidirectional four-beam liquid crystal optical phased-array antenna and multi-user communication method thereof |
| CN105356943A (en) * | 2015-09-29 | 2016-02-24 | 西安空间无线电技术研究所 | Laser communication capturing and tracking system and method thereof |
| CN106533562A (en) * | 2016-11-30 | 2017-03-22 | 上海卫星工程研究所 | Spatial multiuser multi-system satellite laser communication system and method |
| US20180175501A1 (en) * | 2016-12-16 | 2018-06-21 | Samsung Electronics Co .. Ltd. | Beam steering optical phased arrays |
| CN108957900A (en) * | 2018-06-29 | 2018-12-07 | 西安空间无线电技术研究所 | A kind of multi-beam optical phased array antenna based on silicon substrate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595647A (en) * | 2021-07-21 | 2021-11-02 | 联合微电子中心有限责任公司 | Photon beam forming unit, transmitting system and receiving system |
| CN113960713A (en) * | 2021-10-21 | 2022-01-21 | 中国船舶重工集团公司第七二三研究所 | Broadband optical multi-beam integrated chip with flexibly controllable beam number |
| CN113725717A (en) * | 2021-11-02 | 2021-11-30 | 浙江铖昌科技股份有限公司 | Two-dimensional lattice type multi-beam phased array and design method thereof |
| CN113725717B (en) * | 2021-11-02 | 2022-03-11 | 浙江铖昌科技股份有限公司 | Two-dimensional lattice type multi-beam phased array and design method thereof |
| CN114844576A (en) * | 2022-04-19 | 2022-08-02 | 深圳市玖合鑫通讯技术有限公司 | Simulation signal generation device, beam forming simulation system and simulation method |
| CN114844576B (en) * | 2022-04-19 | 2023-12-05 | 深圳市玖合鑫通讯技术有限公司 | Simulation signal generation device, beam forming simulation system and simulation method |
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Application publication date: 20191213 |
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| RJ01 | Rejection of invention patent application after publication |