Dual-band co-aperture flat array antenna

Abstract

The invention discloses a dual-band co-aperture flat array antenna which is applied to multiband homing heads and intelligent ammunition guidance systems. The dual-band co-aperture flat array antenna comprises a single-ridge waveguide slot array surface, a substrate integrated waveguide slot array surface, single-ridge waveguide slot array feed networks and a substrate integrated waveguide slot array feed network. The single-ridge waveguide radiation slot array surface comprises a plurality of rows of parallel single-ridge waveguide radiation slot line arrays; a substrate integrated waveguide radiation slot array comprises a plurality of rows of parallel substrate integrated waveguide radiation slot line arrays; an antenna array surface is divided into four quadrants; the feed networks respectively feed array surfaces of the four quadrants so as to have the condition of realizing a single-pulse function; each quadrant has two sets of feed networks for respectively feeding the single-ridge waveguide slot line arrays and the substrate integrated waveguide slot line arrays; the single-ridge waveguide slot array surface works in an X-band; the substrate integrated waveguide slot array surface works in a Ka-band; arrays of two forms have a common aperture and do not mutually affect; and the problem of electromagnetic wave blocking caused by non-coplanar array surfaces is solved.

Description

technical field [0001] The invention belongs to the technical field of radar antennas, and in particular relates to a dual-band common-aperture flat panel array antenna. There are two types of units: a single-ridge waveguide radiation slot front and a substrate-integrated waveguide radiation slot on the antenna front. It is mainly used in multi-band seeker and intelligent ammunition guidance system. technical background [0002] The use of dual-band coherent active radar seekers can give full play to the advantages of various bands and make up for their shortcomings, so that the guidance system can adapt to the requirements of complex battlefield environments in the future and improve the penetration capability of anti-ship missiles. [0003] Examples of this type of antenna are US Patent No. 6795020B2 "Dual-band Coplanar Microstrip Interleaved Array Antenna", US Patent No. 5023623 "Antenna with Two Modes of Slot Waveguide and Broadband Array", European Patent No. 0825671A2 ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art, and propose a brand-new dual-band single-pulse panel array antenna to solve the problem of electromagnetic wave shielding caused by the different apertures of the antenna arrays in the two working frequency bands, so that it not only It has the advantages of dual-band antennas, and can be applied to the design of monopulse antennas. At the same time, the flat panel has the advantages of compact structure and high mechanical strength, realizing multiple complementary advantages, and can be widely popularized and applied in engineering practice.

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