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Filter and communication system

A filter and filter cavity technology, applied in the field of communication, can solve the problems of different types of cross-coupling, poor consistency of filter materials, high production cost of filters, etc., and achieve the effect of reducing production costs and improving material consistency

Inactive Publication Date: 2021-06-29
ANHUI TATFOOK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The inventors of the present application found in long-term R&D work that in order to improve the characteristics of out-of-band rejection of the filtered signal of the filter, cross-coupling is usually formed between non-cascaded filter cavities, but the cross-coupling types of existing filters are different , resulting in different materials used for cross-coupling, which makes the filter have poor material consistency, which leads to the problem of high production cost of the filter

Method used

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  • Filter and communication system
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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the 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.

[0023] The terms "first" and "second" in this application are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cov...

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Abstract

The invention discloses a filter and a communication system. The filter comprises: a shell having a first direction and a second direction which are perpendicular to each other; and a first filtering branch arranged on the shell, wherein the first filtering branch is composed of ten filtering cavities which are sequentially coupled along a first coupling path, and four capacitive coupling zero points of the first filtering branch are formed. Through the mode, the material consistency of the filter can be improved, and the production cost of the filter is further reduced.

Description

technical field [0001] The present application relates to the technical field of communication, in particular to a filter and a communication system. Background technique [0002] In a base station system for mobile communications, a communication signal carrying communication data within a specific frequency range is usually transmitted through a transmitting antenna, and the communication signal is received through a receiving antenna. The signal received by the receiving antenna includes not only communication signals carrying communication data within the above-mentioned specific frequency range, but also many clutter or interference signals outside the above-mentioned specific frequency range. In order to obtain a communication signal carrying communication data within a specific frequency range transmitted by the transmitting antenna from the signal received by the receiving antenna, it is usually necessary to filter the signal received by the receiving antenna through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/208H01P1/209
CPCH01P1/208H01P1/209
Inventor 李华蔡永宏贺从虎宋文刚
Owner ANHUI TATFOOK TECH CO LTD