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Single multi-mode ceramic filter

A ceramic filter and filter technology, applied in the filter field, can solve problems such as low Q value, poor coupling accuracy and structural stability of multimode filters, achieve high Q value, improve coupling accuracy and yield, and reduce volume Effect

Pending Publication Date: 2020-11-24
GUANGDONG GOVA ADVANCED MATERIAL TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] This application provides a single multimode ceramic filter, which is used to solve the technical problems of existing multimode filters with poor coupling accuracy and structural stability and low Q value

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  • Single multi-mode ceramic filter
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Embodiment Construction

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0031] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer " and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenie...

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Abstract

The invention discloses a single multi-mode ceramic filter. By arranging a first single-mode resonator, a first multi-mode resonator, a second single-mode resonator, a third single-mode resonator, a second multi-mode resonator and a fourth single-mode resonator on a filter body of a single structure, every two resonators are connected by a coupling structure formed by tailoring, so that the plurality of resonators are integrally formed without splicing modes such as welding or pasting, the structural stability is improved, the size of the filter is greatly reduced, the coupling precision and yield are improved, and the process requirements are reduced. Besides, through combination of the single-mode resonators and the multi-mode resonators, the overall insertion loss of the filter is reduced, and the filter is enabled to have a relatively high Q value.

Description

technical field [0001] The present application relates to the technical field of filters, in particular to a single multimode ceramic filter. Background technique [0002] In the field of communications, ceramic dielectric filters have become a hot spot for applications due to their excellent characteristics. At present, there are two mainstream modes of ceramic dielectric filters: one is a single-body ceramic filter, which uses a single-cavity deep-loaded To achieve miniaturization, but due to the deep loading will lead to low single-cavity Q value, the insertion loss of the filter is large, and at the same time, the width size is too large; another mainstream mode is the multi-layer mode, this filter uses a multi-block Ceramics are connected by welding. Because this mode requires multi-layer welding, it is difficult to precisely control the cavity coupling between each single piece of ceramic in the filter, which affects the structural stability and increases the cost. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20
CPCH01P1/20
Inventor 马才兵麦艳红杨继聪
Owner GUANGDONG GOVA ADVANCED MATERIAL TECH
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