Phased array radar multifunctional sub-array beam forming network

Abstract

The invention discloses a phased array radar multifunctional sub-array beam forming network which comprises a primary sub-array beam forming network, two secondary sub-array beam forming networks and four tertiary sub-array beam forming networks. The primary sub-array beam forming network comprises a primary transmitting port and a primary receiving port, the two secondary sub-array beam forming networks comprise respective secondary transmitting ports and secondary receiving ports, the four tertiary sub-array beam forming networks comprise respective tertiary transmitting ports, tertiary receiving ports and TR (transmitting receiving) channel interfaces, two branch ports of the primary sub-array beam forming network are respectively connected with the two secondary sub-array beam forming networks, and four branch ports of the two secondary sub-array beam forming networks are respectively connected the four tertiary sub-array beam forming networks. Compared with the prior art, the phased array radar multifunctional sub-array beam forming network has the advantages that sub-array beams in different scales can be formed by the single phased array radar multifunctional sub-array beam forming network, and the sub-array beam forming networks in different scales can be simultaneously used and also can be individually used; the phased array radar multifunctional sub-array beam forming network is low in equipment quantity and has multiple functions.

Description

technical field [0001] The invention relates to a beam forming network, in particular to a phased array radar multifunctional sub-array beam forming network. Background technique [0002] The digitalization of the sub-array at the front end of the transceiver has become the development trend of the phased array radar, and the beamforming network is an important part of the phased array radar to realize the digitalization of the sub-array. When transmitting, the beamforming network plays the role of distributing the output power of the subarray digital transmitter to each subarray’s transmitting TR channel; when receiving, the beamforming network plays the role of synthesizing the signals received by each subarray TR channel into one or more beams and output to the sub-array digital receiver. Therefore, the beamforming network of phased array radar is a system that connects many TR channels on the array with sub-array digital receivers or transmitters and transmits signals. ...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this prior art beamforming network is that sub-array beamforming networks of different scales such as 4, 8, and 16 channels cannot be shared, and the purpose of sharing transmission and reception cannot be realized, and the function is single, which cannot meet modern requirements. The Development Trend of Phased Array Radar in the Direction of Multifunction and Digitalization

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