Dielectric filter with adjustable coupling and dielectric resonator mixed and matched with metal resonator

Abstract

The invention discloses a dielectric filter with adjustable coupling and a dielectric resonator mixed and matched with a metal resonator. The dielectric filter comprises a shell, a cover board, the dielectric resonator and the metal resonator, an open cavity is formed in the top of the shell in a concave mode, the cover board is detachably fixed to the open end of the cavity, the dielectric resonator and the metal resonator are arranged in the cavity in parallel, a coupling block is arranged on the inner wall of the cavity in an inward protruding and extending mode, the side, close to the metal resonator, of the coupling block protrudes and extends to a boss, the coupling block is arranged between the dielectric resonator and the metal resonator, and the side, close to the coupling block,of the dielectric resonator is provided with an adjustable threaded rod. According to the filter, a traditional coupling and transformation piece is replaced by the coupling block, and the coupling block and the shell can be integrated, so that the consistency and the stability of the coupling block are improved; by arranging the adjustable threaded rod, adjustable production is achieved, and theworking efficiency is improved.

Description

technical field [0001] The present application relates to a filter, in particular to a dielectric filter mixed with adjustable coupling dielectric resonators and metal resonators. Background technique [0002] In the dielectric filter with a mix of dielectric resonators and metal resonators, the traditional solution is to add a coupling conversion plate between the dielectric resonator and the metal resonator for energy coupling. After the positioning plate is positioned, there are still some Disadvantages, such as the dielectric filter mixed with the dielectric resonator and the metal resonator, there is a dimensional deviation in the assembly of the whole machine, or the precision is not enough, and it needs to be reworked. The current method is to open the filter cover, re-correct the coupling plate, correct the distance between the coupling plate and the dielectric resonator, adjust the accuracy, install it, install the cover plate, and continue debugging. To continue t...

AI Technical Summary

Problems solved by technology

[0002] In the dielectric filter with a mix of dielectric resonators and metal resonators, the traditional solution is to add a coupling conversion plate between the dielectric resonator and the metal resonator for energy coupling. After the positioning plate is positioned, there are still some Disadvantages, such as the dielectric filter mixed with the dielectric resonator and the metal resonator, there is a dimensional deviation in the assembly of the whole machine, or the precision is not enough, so it needs to be reworked

The current method is to open the filter cover, re-correct the coupling plate, correct the distance between the coupling plate and the dielectric resonator, adjust the accuracy, install it, install the cover plate, and continue debugging. To continue the above work, this method will produce some adverse factors: 1. The deviation of the size of the coupling plate will cause insufficient precision, resulting in difficult debugging, unsatisfactory index debugging, more rework times, time-consuming and laborious, and coupling in the rework process. Dimensions of tabs can change, coupling tabs can break, cavity set screws can break

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