Radio frequency adjustment structure

Abstract

A radio frequency adjustment structure comprises a tuning screw, a cover plate, a base and a limit member. The tuning screw includes a cap cover part and a smooth rod part. The cover plate includes a base plate part extending horizontally and a column part extending vertically. The cover plate has a through hole which penetrates the column part and the base plate part in the vertical direction, and the smooth rod part is inserted through the through hole. The cap cover part is provided with a first inner thread, the column part is provided with a first outer thread, and the first inner thread is in spiral engagement with the first outer thread. The base is located below the base plate part, and a frequency adjustment cavity is formed between the base plate part and the base. A part of the smooth rod part extends into the frequency adjustment cavity, and the cap cover part is located above the base plate part and surrounds the column part. The limit member is abutted with the cap cover part in the vertical direction. The present invention avoids debris from falling into the lower part of the cover plate and ensures the stability of the tuning screw during the adjustment process.

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