Waveguide slot array anti-jamming antenna

Abstract

The invention provides an anti-interference waveguide slit array antenna which comprises a metal waveguide tube (1) and metal films. The metal waveguide tube (1) is internally provided with a cavity,an accommodation space is formed in the internal space of the cavity, and the metal films are installed in the accommodation space; and the metal films, including first and second metal films (2 and 3), are arranged successively along the length extension direction of the metal waveguide tube (1); and the metal waveguide tube (1) is provided with a radiation slit, and an internal space of the radiation slit is communicated with the accommodation space mutually. A filtering characteristic of a waveguide slow wave structure is merged into the waveguide slit array antenna, so that the antenna hasa good working frequency radiation characteristic and a good anti-interference inhibition characteristic near the high frequency on the basis that the space and size are not changed almost, no additional equipment is included, the difficulty in anti-interference design of the system is reduced, and less equipment is needed.

Description

technical field [0001] The invention relates to the field of microwave technology, in particular to a waveguide slot array anti-jamming antenna, in particular to a waveguide slot array anti-jamming antenna loaded with a capacitive diaphragm. Background technique [0002] With the continuous development of wireless communication technology, the electromagnetic spectrum has been fully utilized and greatly expanded, but it has also become increasingly tense and crowded. Today, there are more and more electronic devices working at various frequencies, and electromagnetic interference in different frequency bands is ubiquitous; and on narrow platforms such as vehicles, ships, airplanes and satellites, the mutual interference of various electronic devices is particularly serious. Typical The best example is the receiving antenna of a small platform in satellite communication, which is severely interfered by the transmitting antenna. Therefore, electromagnetic compatibility issues...

AI Technical Summary

Problems solved by technology

However, this method arranges a large number of metal columns at the bottom of the metal waveguide, which significantly increases the actual weight of the antenna and limits the large-scale array capability of the antenna

At the same time, due to the dense arrangement of metal columns, the processing difficulty and cumbersomeness are increased

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