Monopulse antenna array of integrated broadband miniaturization and difference phase comparison network

Abstract

The invention discloses a monopulse antenna array of an integrated broadband miniaturization and difference phase comparison network. The monopulse antenna array comprises a miniaturized broadband plane and difference phase comparison network and a plane yagi array antenna; the miniaturized broadband plane and difference phase comparison network is composed of a double-faced parallel strip line, and comprises a first-level network and a second-level network, the first-level network comprises a first-level network and a second-level network, the first-level network comprises a first-level annular coupler, the second-level network comprises two second-stage annular couplers, a phase inverter is arranged at the annular part of the couplers, and electrical connection is formed between the upper layer and the lower layer of the phase inverter through a metallized through hole. The bandwidth of the integrated broadband miniaturization and difference phase comparison network is increased, the monopulse antenna array has smaller structure size and is smaller than the size of a general T-shaped power dividing feed network, and a transition structure between the feed network and the antenna is not needed; by adopting a plane structure, the integral construction is greatly simplified, the processing difficulty is low, and the monopulse antenna array is easy to large-scale production, is easy to be integrated with other plane circuits, is particularly suitable for integration in radar systems, and is extremely convenient to install and debug.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to an antenna in a monopulse radar system, and more specifically, relates to a monopulse antenna array integrating wideband miniaturization and a phase difference comparison network. Background technique [0002] Monopulse radar is a high-precision tracking and directional radar. Monopulse radar can obtain all direction information and distance information of the target within one pulse period, with precise orientation and strong anti-interference ability. As a key component of monopulse radar, monopulse antenna determines the performance of monopulse radar to a large extent, so the research on monopulse antenna is of great significance. Traditional monopulse radars mostly use parabolic antennas, Cassegrain antennas, etc., and their corresponding phase comparison networks mostly use metal waveguide structures, so they have large volume, heavy weight, complex structure, high cost, an...

AI Technical Summary

Problems solved by technology

Traditional monopulse radars mostly use parabolic antennas, Cassegrain antennas, etc., and their corresponding phase comparison networks mostly use metal waveguide structures, so they have large volume, heavy weight, complex structure, high cost, and are not easy to integrate with other planar circuits. Shortcomings

In addition, due to the narrow bandwidth of traditional and differential phase comparison networks, it will limit the bandwidth of the entire antenna array and even the radar system

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