Dual-band waveguide slot array antenna

Abstract

The invention relates to a dual-band waveguide slot array antenna, which comprises a radiation layer, a coupling layer and a feed network layer, and is characterized in that the radiation layer and the feed network layer are respectively arranged at two sides of the coupling layer; the radiation layer is provided with first radiation slots, second radiation slots, shoulder arms, grooves and choke grooves, the first radiation slots which are distributed in a staggered manner are uniformly arranged on two sides of a center line of the surface of each shoulder arm, the grooves are formed between two adjacent shoulder arms, the second radiation slots are distributed on two sides of a center line of the grooves in a staggered manner, and the choke grooves are formed between two grooves. The length of the second radiation slot is greater than that of the first radiation slot. The first radiation slot and the second radiation slot which are different in length are formed in the antenna, the first radiation slot is formed in the shoulder arm, the second radiation slot is formed in the groove, the space size can be effectively utilized, the thickness of the antenna can be reduced, work of two different frequency bands can be met, and the requirement of the dual-band wave band for the radiation slots is met.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a dual-band waveguide slot array antenna. Background technique [0002] With the rapid development of modern communication technology, the requirements of communication systems for antennas are developing in the direction of miniaturization and high efficiency. The waveguide panel array antenna has the characteristics of small size, high efficiency, low profile and light weight, which is very in line with the development direction of modern communication technology. [0003] Due to the advantages of small size, compact structure, good mechanical strength, high reliability, and long service life, the planar waveguide slot array antenna can expand the working bandwidth and reduce the size of the cavity by loading a single ridge or double ridge to feed the inner cavity of the waveguide. , reducing weight, so it has become one of the preferred solutions for radar antenn...

AI Technical Summary

Problems solved by technology

[0004] The radiating unit of the planar waveguide slot array antenna usually uses a wide-side longitudinal slot as the radiating unit, but this wide-side longitudinal slot can only work in one frequency band at the same time, and cannot meet the requirements of the antenna working in two frequency bands at the same time

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