Metal filter, filtering loop module and coupling amount adjusting method

Abstract

The invention relates to a metal filter, a filtering loop module and a coupling amount adjusting method. The filtering loop module comprises five resonators, wherein the five resonators are sequentially arranged along a signal transmission path to form a main loop, the main loop is provided with a first zero point structure, a second zero point structure and a third zero point structure, and the first zero point structure, the second zero point structure and the third zero point structure are oppositely arranged at intervals; the second zero point structure is arranged between the first zero point structure and the third zero point structure, the first zero point structure and the third zero point structure are correspondingly provided with inductive coupling parts with adjustable coupling amount, and the second zero point structure is correspondingly provided with a capacitive coupling probe. The coupling amount of the second zero point structure can be adjusted by adjusting the coupling amount of the first zero point structure and / or the coupling amount of the third zero point structure, so processing precision and assembly precision of the capacitive coupling probe can be reduced.

Description

Technical field [0001] The present invention relates to the field of communication technologies, and more particularly to a metal filter, a filter loop module, and a regulation method of coupling amount. Background technique [0002] The filter is an indispensable communication device as a radical device. As the high-speed development of communication technology, the filter needs to reduce insertion loss and improve inhibition. Among them, a capacitive coupling structure is provided in the filter loop module of the metal filter, and the capacitive coupling structure typically includes a capacitive coupling probe (also known as a capacitive coupled flying needle), and two resonators are realized by capacitive coupling probes. Cycorder coupling. When actual application, when the size of the capacitive coupling probe (diameter, length, etc.) or a slight deviation (tolerance ± 0.01 mm), which will affect loss and suppression, thereby increasing processing difficulty and assembly diff...

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a method for adjusting the size of the metal filter, filter loop module and coupling amount for the problems of high processing difficulty and high assembly difficulty

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