Broadband two-dimensional sum-difference phase comparison network based on multilayer microstrip slot coupling structure

Abstract

The invention discloses a broadband two-dimensional sum-difference phase comparison network based on a multilayer microstrip slot coupling structure, solves the problem of narrow bandwidth of an existing two-dimensional sum-difference phase comparison network, and can be used for feeding of a broadband two-dimensional monopulse array antenna in monopulse radar. The network comprises a first dielectric plate (1) and a second dielectric plate (2) which are stacked up and down. The upper surface of the first dielectric plate (1) is printed with an upper microstrip line, and the metal floor (14) printed on the lower surface is provided with four circular gaps and four linear gaps. And a lower microstrip line is printed on the lower surface of the second dielectric plate (2). The four microstrip nodes of the upper microstrip line, the four circular gaps at the corresponding positions on the metal floor and the four microstrip nodes at the corresponding positions on the lower microstrip lineform four patch gap couplers; and the four linear slots etched on the metal floor and the microstrip open-circuit ends at the corresponding positions respectively form four slot coupling phase shifters.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to a broadband two-dimensional and differential phase comparison network, in particular to a broadband two-dimensional and differential phase comparison network based on a multi-layer microstrip slot coupling structure, which can be used in broadband two-dimensional in monopulse radar Feed for a monopulse array antenna. Background technique [0002] The sum and difference phase comparison network is an important microwave passive device, which can combine the array antenna feed network to perform phase and difference comparison operations on the received four-way antenna independent signals to obtain angle error signals. The sum-difference phase network is widely used in the feed network of monopulse radar array antennas to achieve tactical goals such as target tracking. [0003] The traditional two-dimensional and differential phase comparison network is usually based on a metal ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects in the above-mentioned prior art, and propose a broadband two-dimensional sum difference phase comparison network based on a multi-layer microstrip slot coupling structure, which is used to solve the narrow bandwidth technology existing in the prior art question

Images