Full metal circular polarization and liner polarization 8-shaped wave beam antenna of millimeter wave

Abstract

The invention discloses a full metal circular polarization and liner polarization 8-shaped wave beam antenna of a millimeter wave. Two antenna radiation units are respectively mounted on two rectangular feed waveguides which are connected or not connected with each other; the two rectangular feed waveguides are connected with a double-T-shaped waveguide splitter; each antenna radiation unit is provided with a cross-shaped coupling gap; a pair of isosceles triangle radiation slots which are distributed in a central symmetry way are formed in the two diagonal line directions and positioned on the upper surface of a rectangular radiation cavity; the rectangular radiation cavity is fixed above the cross-shaped coupling gap; the arm E and the arm H of the double-T-shaped waveguide splitter are input ends; the two side arms are respectively connected with two hollow conducting cavities. According to the antenna disclosed by the invention, the 8-shaped wave beam shape and width are realized by adjusting an angle; full metal can be used for extremely harsh environments, such as low-temperature and high-temperature environments; meanwhile, the full metal circular polarization and liner polarization 8-shaped wave beam antenna of the millimeter wave has the advantages of compact structure, low side lobe and back lobe, wide application range, low requirement for machining precision, easiness in implementation, low cost and the like, and is very suitable for millimeter-wave band.

Description

technical field [0001] The invention relates to a millimeter-wave antenna, in particular to a millimeter-wave all-metal circular polarization and linear polarization "8"-shaped beam antenna. Background technique [0002] The research on slot antennas first started in the 1940s. In 1946, H. G. Booker proposed the concept of the slot antenna, but it did not attract widespread attention at that time. With the development of research, the waveguide slot antenna has been widely valued and applied due to its advantages of high efficiency, compact structure, independent control of aperture distribution, and simple processing and installation. At present, waveguide-fed slot antennas have been widely used in the fields of ground, shipboard, airborne, navigation, meteorology, air traffic control, beacons and airborne radar. The waveguide slot antennas that have been put into use are mainly in the military field, including Russia's "Pearl" airborne fire control radar, the X-band sate...

AI Technical Summary

Problems solved by technology

At present, there are relatively few reports on the design of wideband circularly polarized and linearly polarized "8" beam antennas using waveguide structures in the millimeter wave band, and the performance is not ideal, which limits its application prospects in aerospace and airborne radar.

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