Single-cavity resonator and radio frequency cavity filter

Abstract

The invention relates to the field of communication devices, and discloses a single-cavity resonator and a radio frequency cavity filter. The single-cavity resonator comprises a shell which is internally provided with a resonant cavity; a cover body which covers the shell, wherein the resonant cavity is located in the shell and the cover body; a resonant piece which comprises a sheet-shaped first resonant piece and a sheet-shaped second resonant piece, wherein the first resonant piece comprises a first connecting end and a first resonant end which are integrated, the first connecting end is connected with the resonant cavity, and the first resonant end is located in the resonant cavity and is separated from the inner wall of the resonant cavity; the second resonant piece comprises a second connecting end and a second resonant end which are integrated, the second connecting end is connected with the resonant cavity, the second resonant end is located in the resonant cavity and is spaced from the inner wall of the resonant cavity, the first resonance end and the second resonance end are spaced to form a frequency modulation interval. The single-cavity resonator is small in size, light in weight, simple in structure and few in parts, and is suitable for developing the radio frequency cavity filter which is small in size, light in weight, simple in structure and few in parts. The radio frequency cavity filter is small in size, light in weight, simple in structure and few in parts.

Description

technical field [0001] The invention relates to the technical field of communication equipment, in particular to a single cavity resonator and a radio frequency cavity filter. Background technique [0002] A cavity filter is a microwave filter with a resonant cavity structure. A cavity can be equivalent to an inductor connected in parallel with a capacitor to form a resonant stage to realize microwave filtering. It is an indispensable important device in the communication system, and its performance directly affects the performance index of the entire communication system. [0003] The cavity filter is mainly composed of a cavity, a cover plate covering the cavity, debugging screws, lock nuts and set screws, among which there are resonant columns on the cavity, and the cover plate is equipped with Screw vias for screws and debug screws. With the upgrading and development of communication technology, related products put forward higher requirements for the miniaturization a...

AI Technical Summary

Problems solved by technology

However, there are many problems in the existing traditional cavity filter, which are mainly reflected in: 1. Limited by the resonance frequency of the circular resonator, it is impossible to achieve a smaller size and lighter weight design of the cavity filter; 2. , There are many types of materials in traditional cavity filters (such as adjustment screws, lock nuts and set screws, etc.), and the assembly relationship is complicated. It is necessary to manually adjust the depth of each adjustment screw inserted into the corresponding cylindrical resonator one by one. Frequency modulation of the resonant cavity is not conducive to the realization of production automation

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