Hidden type feed ridge waveguide slot antenna

Abstract

The invention discloses a hidden type feed ridge waveguide slot antenna. The hidden type feed ridge waveguide slot antenna comprises a slot leaky wave ridge waveguide and a ridge waveguide coaxial converter which are in mutual connection; the slot leaky wave ridge waveguide comprises a ridge waveguide and a plurality of radiation slots formed in the upper surface of the ridge waveguide; the ridgewaveguide coaxial converter comprises a ridge waveguide cavity and an SMA connector; convex grooves are formed in the ridge waveguide and the lower bottom surface of the ridge waveguide cavity; the cross sections of the ridge waveguide and the ridge waveguide cavity are inversely concave-shaped; a metal table is arranged in the convex groove of the ridge waveguide cavity; the SMA connector is arranged in the metal table in a penetration manner; by virtue of reasonable radiation slot layout on the ridge waveguide, an effect of high gain and low side lobe is achieved; the metal table is arrangedin the ridge waveguide coaxial converter, and the SMA connector is hidden in the ridge waveguide coaxial converter, so that an effect of reasonable space utilization and SMA connector protection is achieved; and in addition, an effect of reducing the antenna dimension is also realized.

Description

technical field [0001] The invention relates to the field of microwave technology, in particular to a hidden feeding ridge waveguide slot antenna applied to various aspects such as vehicle, airborne, shipborne, missile-borne, meteorological, air traffic control, port control radar systems and the like. Background technique [0002] The waveguide slot antenna is a product born with the development of the radar system. It first appeared in the ground air defense radar during World War II. Expanding to the civilian field, the military aspect includes various early warning radars, guidance radars, and detection radars, and the civilian aspect includes weather radars, air traffic control radars, and maritime radars. [0003] The document "Design of Broadband Single Ridge Waveguide Antenna Array" (published journal: Modern Electronic Technology, publication date: 2006, author: Jin Jian, Wang Wei, Wan Xiaomei) gives a design of broadband single ridge waveguide antenna, the antenna ...

AI Technical Summary

Problems solved by technology

The antenna uses a ridge waveguide to reduce the size of the waveguide, but the size and position of the slots cut on the waveguide are the same, which cannot achieve the effect of low sidelobes. The size is large, so there is currently no ridge waveguide slot antenna that meets the requirements of low cross-polarization and low sidelobe while reducing the size

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