Multi-doubling frequency harmonic inhibiting waveguide wave filter

Abstract

The invention discloses a multi-doubling frequency harmonic inhibiting waveguide wave filter which relates to the technical field of electronic communication and aims to solve the technical problems of complicated structure, large volume, difficult assembly, low reliability, and the like in the traditional multi-doubling frequency harmonic inhibiting product in a waveguide way. In the multi-doubling frequency harmonic inhibiting waveguide wave filter, a three-port structure comprises a high-frequency output end, a low-frequency output end and a public input end, and a signal source from the public input end of an antenna opening is divided into two paths, wherein one path is outwards output by a low-frequency waveguide opening of the low-frequency output end after passing through a waveguide bandpass wave filter A and a harmonic inhibiting wave filter, and the other path is outwards output by a high-frequency waveguide opening of the high-frequency output end after passing through a waveguide bandpass wave filter B and the harmonic inhibiting wave filter. The invention is suitable for the fields of microwave communication, satellite communication, electronic equipment, and the like.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a waveguide filter for suppressing multi-frequency harmonics. Background technique [0002] The multi-frequency harmonic suppression component is a key component in the communication system. Due to the frequency selectivity of the resonator, the signal of the specified frequency can pass through the device, and the energy other than the specified frequency signal is reflected, thereby realizing the function of frequency selection. [0003] Products currently on the market generally use candied haws coaxial cable or microstrip form for multi-frequency harmonic suppression. The frequency range of multi-frequency harmonic suppression of these structures is generally within 0GHz to 5GHz. In the case of high frequency , the current structure is difficult to process, large insertion loss, poor suppression of remote frequency harmonics, and many parasitic passbands. Secondly, bec...

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Problems solved by technology

[0004] The present invention aims to solve the technical problems such as complex structure, large volume, difficult assembly and low reliability existing in existing waveguide form multi-frequency harmonic suppression products, so as to provide an easy-to-control processing precision, simpler structure, lower insertion Multi-octave harmonic suppression waveguide filter with small loss, large signal receiving range, high signal receiving sensitivity, strong anti-interference ability and no intermediate conversion device

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