Filter and its communication module

Abstract

The embodiment of the present invention provides a filter and a communication module using it, which relates to the field of electronic components, and solves the problem of debugging when using the method of removing dielectric materials to perform frequency debugging on the existing solid double-ended TM mode filter Irreversible and difficult to control in production. The filter includes a metal cavity with an opening, a dielectric resonator, a metal shielding cover and a tuning component, the metal shielding cover covers the opening of the metal cavity and is fixed on the metal cavity, and the dielectric resonator is fixed on the bottom surface inside the metal cavity Between the metal shielding cover; the tuning component is passed through the metal shielding cover, the tuning part of the tuning component extending into the metal cavity is located in the gap between the dielectric resonator and the inner wall of the metal cavity, and the tuning part is perpendicular to the The length in the direction of the bottom surface of the metal cavity is adjustable. The communication module includes the filter described above.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a filter and a communication module using the same. Background technique [0002] In the communication module of the base station, the filter is used to select the communication signal, filter out the clutter or interference signal outside the frequency of the communication signal, and retain the required signal in the passband. As the requirements of base stations for miniaturization, high performance, and high power of communication modules are increasing, solid double-ended TM (transverse magnetic, transverse magnetic field) mode filters have been widely used due to their small size and high peak power. [0003] figure 1 A structural form of the solid double-ended TM mode filter is shown, "solid" means that the medium used therein is a solid dielectric rod, and "double-ended" means that the two ends of the dielectric rod are plated with conductive materials and the two en...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a filter and a communication module using it, which solves the irreversible problem of debugging when the frequency debugging of the existing solid double-ended TM mode filter is carried out by using the method of removing the dielectric material

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