Modularly integrated broadband millimeter wave waveguide slot antenna array

Abstract

The invention provides a modularly integrated broadband millimeter wave waveguide slot antenna array. The modularly integrated broadband millimeter wave waveguide slot antenna array comprises a plurality of identical antenna sub-arrays. The antenna sub-arrays are composed of two rows and three columns of one-dimensional central feed waveguide slot antennas. The interior of each waveguide slot antenna is horizontally divided into three layers which are respectively provided with a slot waveguide, a coupling waveguide and a feed waveguide. The same vertically polarized radiation slots are uniformly distributed at the top of the slot waveguide. Two rows of waveguide slot antennas of the antenna sub-arrays share a slot waveguide layer. The coupling waveguides and the feed waveguides of the tworows of waveguide slot antennas of the antenna sub-arrays are staggered in the direction perpendicular to the central axis of the waveguide slot antennas. The two ends of the plurality of antenna sub-arrays are aligned and are connected in parallel to form a modular integrated broadband millimeter wave waveguide slot antenna array. The antenna is simple in structure, convenient to process, easy to realize wide and narrow beam conversion, low in loss and high in use value.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a modular integrated broadband millimeter wave waveguide slot antenna array. Background technique [0002] In recent years, with the development of modern communication and radar technology, traditional low-frequency bands have been largely occupied, and mutual interference is inevitable. Millimeter waves are increasingly being researched for their rich spectrum resources and high anti-interference performance. people's favor. As people's requirements for data transmission rates are increasing day by day, millimeter-wave high-gain antennas with low loss and narrow beams have increasingly become a hot topic of concern and research. [0003] The waveguide slot array antenna is a commonly used microwave power radiation device. It has the characteristics of low loss, easy processing, and stable antenna beam pointing. Application requirements for high reliability of spaceborne ante...

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Problems solved by technology

In the current reports, there are ridge waveguides used to realize the miniaturization design of antenna broadband, but the structure of ridge waveguides is complex, which is greatly affected by the processing accuracy in the millimeter-wave frequency band, while the traditional waveguide structure is simple, easy to process, high in reliability, and easy to realize modular integration. The miniaturization and modular integration design of waveguide antennas in the millimeter wave band is a difficult problem. It is necessary to explore a broadband and compact antenna array, which not only meets the application requirements of modular integration, but also realizes large-scale array formation with high performance. , and meet the structural strength requirements of spaceborne applications

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