Transmitting and receiving shared two-dimensional reconfigurable light-operated beam forming network device

A technology for transmitting and receiving sharing and network devices, applied in the field of phased array radar, can solve the problems of poor scalability, two-dimensional control that cannot realize two-way sharing, poor practicability, etc., to simplify complexity, improve practicability and expandability. Effect

Pending Publication Date: 2021-10-29
BEIJING INST OF RADIO MEASUREMENT
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Problems solved by technology

[0003] However, the current optical beamforming network devices are mainly proposed for one-dimensional line arrays, and are usually only applicable to the transmitting end or receiving end of the antenna, and cannot realize bidirectional shared two-dimensional control. Poor practicability and poor expandability of the device

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  • Transmitting and receiving shared two-dimensional reconfigurable light-operated beam forming network device
  • Transmitting and receiving shared two-dimensional reconfigurable light-operated beam forming network device
  • Transmitting and receiving shared two-dimensional reconfigurable light-operated beam forming network device

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Embodiment Construction

[0022] The principles and features of the present invention will be described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0023] It should be understood that the optically controlled beamforming network device of the present invention is used for a phased array antenna, and the input optical carrier signal can be generated by a multi-wavelength array laser and input from the first optical power splitter. For an M*N antenna array, the present invention only needs one optical dispersion delay unit and N optical switch delay units. Compared with the traditional solution, fewer optical delay units are used and the system complexity is lower.

[0024] In the non-full array working state, the actual array position and array size can be controlled by selecting the output wavelength range of the array wavelength laser.

[0025] The present...

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Abstract

The invention discloses a transmitting and receiving shared two-dimensional reconfigurable light-operated beam forming network device, and relates to the field of phased array radars. A first output end of a first optical power divider of the device is connected with a first modulation-demodulation module, and N output ends of the first optical power divider are connected with one end of a modulation-demodulation array; the first modulation-demodulation module is also connected with an optical dispersion delay unit; the optical dispersion delay unit is connected with the input end of asecond optical power divider, and N paths of output ends of the second optical power divider are connected with the optical switch delay unit; and the optical switch delay unit is also connected with the other end of the modulation-demodulation array. The device is suitable for a phased-array antenna realized based on a microwave photon true delay technology, realizes two-dimensional control of a wave beam in an azimuth direction and a pitching direction, and through the topological structure, the same set of delay network is used for transmitting and receiving of the antenna, and bidirectional sharing of a transmitting wave beam and a receiving wave beam is realized.

Description

technical field [0001] The invention relates to the field of phased array radar, in particular to a two-dimensional reconfigurable optical control beam forming network device shared by sending and receiving. Background technique [0002] When traditional phased array antennas work with large instantaneous bandwidths, using phase shifters for beam scanning will cause beam pointing deviation. However, the technology based on microwave photon true delay can realize accurate beam pointing under large instantaneous bandwidth. [0003] However, the current optical beamforming network devices are mainly proposed for one-dimensional line arrays, and are usually only applicable to the transmitting end or receiving end of the antenna, and cannot realize bidirectional shared two-dimensional control. The practicability and expandability of the device are poor. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a two-dimension...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/26H01Q3/30H01Q21/00G01S7/02G01S13/02
CPCH01Q3/2676H01Q3/2682H01Q3/30H01Q21/00G01S13/02G01S7/02
Inventor 张程慧杨杰
Owner BEIJING INST OF RADIO MEASUREMENT
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