C/X dual-wave waveband shared aperture waveguide slot array antenna

Abstract

The invention relates o a C / X dual-wave waveband shared aperture waveguide slot array antenna, which is mainly applied to a multi-functional and multi-purpose composite radar. The antenna comprises an X waveband waveguide slot antenna, a radiation transition cavity and a C waveband waveguide slot antenna, wherein the X waveband waveguide slot antenna adopts a waveguide narrow-side inclined slot radiating unit; the C waveband waveguide slot antenna adopts a waveguide wide-side slot radiation array antenna. The working frequency difference of the two antennae is used, the C waveband waveguide slot antenna is placed behind the X waveband waveguide slot antenna, impedance matching from the C waveband waveguide slot antenna to an X waveband antenna linear array slot is realized by using the radiation transition cavity, and electromagnetic wave radiation of the C waveband waveguide slot antenna is realized through the linear array slot.

Description

technical field [0001] The invention belongs to the field of radar antennas, in particular to a C / X dual-band common-aperture waveguide slot array antenna, which is applied to multifunctional and multipurpose composite radars. Background technique [0002] With the development of multi-purpose moving platform radar system, more and more functions are required for the radar system on the platform, and the requirements for radar system indicators are getting higher and higher. Radars with multiple frequency bands often need to be deployed on the same platform. The conventional practice of ground radar is to use one antenna for each radar, but the space position of the mobile weapon platform is very limited, and it is impossible to install multiple radar antennas. Therefore, the multi-band common-aperture antenna design technology Gaining importance. [0003] The dual-frequency common-aperture antenna is a dual-frequency antenna array composed of antenna units working in two f...

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Problems solved by technology

[0007] In order to overcome the deficiencies of the existing multi-band common-aperture antenna technology, the present invention proposes a C / X dual-band common-aperture waveguide slot array antenna to solve the difficult problem of waveguide slot array multi-band common-aperture antenna technology, so that it can not only overcome the dual-band The problem of mutual shading and mutual influence of antenna units, and at the same time has the advantages of waveguide slot antenna array, and can be widely used in engineering practice

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