Millimeter wave two-dimensional sum-difference network

Abstract

The invention provides a millimeter wave two-dimensional sum-difference network, which has the advantages of small size, light weight, high structural strength and low cost. According to the technical scheme of the invention, a microstrip line conductor tape (1) and a microstrip line dielectric slab (2) are wired along a sunken shielding cavity topological curve pattern on the plate surface of a metal shielding plate (3) to form a complete millimeter wave transmission line structure; the front end and the rear end of the metal shielding plate are provided with a sum port, a pitch difference port, an azimuth difference port and a dual-difference port, the conductor tape and the microstrip line dielectric slab surround the sunken groove isolated by a middle rectangular body of the above ports through the above four input ports, extend along sunken opening grooves formed by Z-shaped isolation blocks at two ends of the rectangular body, are bent around the Z-shaped isolation blocks and a middle cylindrical isolation blocks, and extend to output ports of the Z-shaped tail-end sunken groove along the Z-shaped back-end sunken groove, and a topological structure for the millimeter wave two-dimensional sum-difference network with eight ports is formed.

Description

technical field [0001] The invention belongs to the field of microwave and millimeter wave technology, and relates to a two-dimensional sum and difference network in the millimeter wave band suitable for systems such as millimeter wave single-pulse radar. Background technique [0002] The two-dimensional sum and difference network, also known as two-dimensional comparator and two-dimensional sum difference, can simultaneously superpose and subtract four signals, and output the sum and difference signal at the same time. As a key component of the millimeter-wave monopulse radar system, the performance of the sum difference network often directly affects important tactical indicators such as radar tracking accuracy and tracking distance. The traditional millimeter-wave two-dimensional sum and difference network is usually realized by waveguide, which makes the sum and difference network larger, which brings inconvenience to the miniaturization, light weight and integrated desi...

AI Technical Summary

Problems solved by technology

The traditional millimeter-wave two-dimensional sum and difference network is usually realized by waveguide, which makes the sum and difference network larger, which brings inconvenience to the miniaturization, light weight and integrated design of the radar system

On the other hand, due to the high requirements on the processing accuracy of the device in the millimeter wave frequency band, the processing technology of the two-dimensional sum difference network of the waveguide is more complicated, the scrap rate is high, and the cost will inevitably not be reduced.

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