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Filter and communication equipment

A filter and filter cavity technology, applied in the field of communication, can solve the problem of many types of filter materials, and achieve the effect of facilitating debugging indicators, improving suppression performance, and reducing material types

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

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Problems solved by technology

[0004] The present application provides a filter to solve the technical problem that there are many types of filter materials in the prior art

Method used

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  • Filter and communication equipment
  • Filter and communication equipment
  • Filter and communication equipment

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Embodiment Construction

[0031] The application will be described in further detail below in conjunction with the accompanying drawings and embodiments. In particular, the following examples are only used to illustrate the present application, but not to limit the scope of the present application. Likewise, the following embodiments are only some of the embodiments of the present application but not all of them, and all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0032] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein, for example, can be practi...

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Abstract

The invention discloses a filter and communication equipment. The filter comprises: a housing provided with a first direction and a second direction perpendicular to the first direction; and a filtering branch arranged on the shell and composed of ten filtering cavities which are sequentially coupled, wherein the ten filtering cavities of the filtering branch circuit comprise four inductive cross coupling zero points. The range of the receiving bandwidth of the filtering branch is from 822 MHz to 845 MHz, and the range of the transmitting bandwidth of the filtering branch is from 867 MHz to 890 MHz. Through the above mode, the four inductive cross coupling zero points of the filtering branch realize zero point suppression, index debugging is facilitated, the four inductive cross coupling zero points are all inductive cross coupling, and the material types of the filter are reduced, so that the consistency of materials is good, the stability of the filter is improved, and the suppression performance of a passband of the filtering branch is improved.

Description

technical field [0001] The present application relates to the technical field of communication, in particular to a filter and a communication device. Background technique [0002] In mobile communication equipment, the required signal is modulated to form a modulated signal, which is loaded on a high-frequency carrier signal, transmitted to the air through the transmitting antenna, and the signal in the air is received through the receiving antenna. Among the signals received by the receiving antenna, not only Include the desired signal, but also include other frequency harmonics, noise signals. For the signal received by the receiving antenna, it is necessary to use a filter to filter out unnecessary harmonics and noise signals. Therefore, the designed filter must precisely control its bandwidth. [0003] The inventors of the present application found in the long-term research and development work that the filter branch of the filter in the prior art includes capacitive c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/208
CPCH01P1/208
Inventor 钟志波李华龚爱强唐成
Owner ANHUI TATFOOK TECH CO LTD
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