Tunable high power waveguide band-stop filter

Abstract

The invention discloses a tunable high power waveguide band-stop filter comprising a main waveguide cavity with a left interface and a right interface, and at least two auxiliary waveguide cavities with same structures and respectively having one interface and a tuning structure; two opposite side faces of the main waveguide cavity are respectively provided with a rectangular coupling port, wherein the size of the rectangular coupling port is matched with an interface size of the auxiliary waveguide cavity; the auxiliary waveguide cavities are fixed on the rectangular coupling ports of the main waveguide cavity; the cavities of the main waveguide cavity and the auxiliary waveguide cavities are connected. The tunable high power waveguide band-stop filter is large in power capacity, strong in practicality, tunable in work frequency, and the whole filter is novel in structure, light in weight, and provides supports for micromation and integration of a subsequent system.

Description

technical field [0001] The invention relates to a filter applied in the fields of radio frequency and microwave, in particular to a tuneable high-power waveguide band-stop filter. Background technique [0002] With the development of wireless communication technology and the advancement of global informatization, a large number of radio signals need to be transmitted through radio frequency, microwave and other communication systems, and communication systems in different frequency bands can only work normally in their corresponding frequency bands, which requires The filter in the communication system has high accuracy in frequency selection, so as to achieve greater attenuation of noise signals such as unwanted interference, spurious and spurious, and to attenuate the required signal in the communication system with as little attenuation as possible. However, with the development of civilian communication systems and military communication systems, a large amount of inform...

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Problems solved by technology

[0002] With the development of wireless communication technology and the advancement of global informatization, a large number of radio signals need to be transmitted through radio frequency, microwave and other communication systems, and communication systems in different frequency bands can only work normally in their corresponding frequency bands, which requires The filter in the communication system has high accuracy in frequency selection, so as to achieve greater attenuation of noise signals such as unwanted interference, spurious and spurious, and to attenuate the required signal in the communication system with as little attenuation as possible. However, with the development of civilian communication systems and military communication systems, a large amount of information needs to be transmitted between communication systems with limited frequency band resources, which requires the communication system to have faster transmission speed, wider transmission bandwidth and Stronger anti-interference ability, which to some extent determines that the filter that has a direct impact on various performance indicators of the communication system must have better performance, especially in applications such as microwave deep space exploration, due to the microwave signal The frequency is high, the energy is large, and it has a wide frequency band. In the past, the filter with a small power capacity and a single frequency selection characteristic could not meet its actual needs.

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