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Multi-frequency band elimination filter

A filter and multi-band technology, which is applied to waveguide devices, electrical components, circuits, etc., can solve the problems of bulky, large number of band-stop filters, and performance degradation of filter performance communication systems, etc., to reduce volume and structure Effect of compact and novel, functional and miniaturized design

Inactive Publication Date: 2013-12-25
SICHUAN JIUZHOU ELECTRIC GROUP
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  • Abstract
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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a multi-frequency band-stop filter to solve the traditional band-stop effect of multiple frequencies, which requires a large number of series-connected band-stop filters and a large volume, resulting in filtering The problem of performance degradation of the device and the performance of the entire communication system

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Embodiment Construction

[0019] Certain terms are used, for example, in the description and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. As mentioned throughout the specification and claims, "comprising" is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. The following descriptions in the specification are preferred implementation modes for implementing the present invention, but the descriptions are for the purpose of illustrating the general principles of the present invention, and ...

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Abstract

The invention relates to the technical field of microwave communication, and discloses a multi-frequency band elimination filter. The filter comprises an input port, an output port, a waveguide transmission line and a plurality of filter bodies. The filter bodies are coupled with the two sides of the waveguide transmission line respectively, and the filter bodies are composed of resonators with the same resonance frequency or different resonance frequencies. Compared with a traditional band elimination filter which is formed by arranging resonators in a linear mode, the multi-frequency band elimination filter has the advantages that the structure is compact and novel, and due to the fact that the resonators with the same resonance frequency or different resonance frequencies to be arranged on the two sides of the waveguide transmission line in a coupled window mode, the sizes of devices in the system are effectively reduced, a plurality of useless frequency band signals can be also blocked, and the performance is greatly optimized.

Description

technical field [0001] The invention relates to the technical field of microwave communication, in particular to a multi-frequency band rejection filter. Background technique [0002] Microwave filters have important functions such as frequency selection, frequency division and signal isolation. They are widely used in modern microwave and millimeter wave communication, satellite communication, remote sensing and radar technology systems, and their performance will directly affect the operation quality of the entire system. . According to different passbands, microwave filters can be divided into low-pass, band-pass, band-stop, and high-pass filters. Among them, the band rejection filter, as a kind of microwave filter, also plays a very important role in the communication system. Generally, in many microwave systems, it is required that the attenuation should be as small as possible during signal transmission, and the unwanted noise, interference, and stray should be suppr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
Inventor 韩世虎
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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