Filter, communication device and communication system
A filter and detection device technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problem of high equipment cost and achieve the effect of saving equipment cost
Active Publication Date: 2015-09-30
HUAWEI TECH CO LTD
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Problems solved by technology
The microwave filter usually only corresponds to a fixed working frequency band. If the working frequency band required by the existing network changes and is not compatible with the inherent working frequency band of the microwave filter, the system can only work normally by replacing the suitable equipment. higher cost
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Embodiment Construction
[0041] In order to reduce equipment cost of a filter, an embodiment of the present invention provides a filter. In this technical scheme, the first rectangular waveguide is formed between the two first side plates and the top plate and the bottom plate between the two first side plates, and at least one membrane whose surface is metal is connected between the top plate and the bottom plate and connects the first rectangular waveguide. A rectangular waveguide inner cavity is divided into several chambers extending along the input and output directions of the first rectangular waveguide, at least one first side plate is a movable side plate whose position can be adjusted relative to the diaphragm, and the position of the movable side plate can be adjusted The adjustment of the working frequency band of the filter is realized without replacing relevant equipment, and compared with the prior art, this solution greatly saves the equipment cost. In order to make the purpose, technic...
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A filter, a communications apparatus, and a communications system. The filter comprises a top plate, a bottom plate, two first side plates disposed between the top plate and the bottom plate, and at least one diaphragm with a metal surface. The two first side plates and portions of the top plate and the bottom plate between the two first side plates form a first rectangular waveguide. The at least one diaphragm with the metal surface is connected between the top plate and the bottom plate, and separates an inner cavity of the first rectangular waveguide into multiple cavities extending along input and output directions of the first rectangular waveguide. At least one of the first side plates is a movable side plate capable of adjusting the position relative to the diaphragm. A working frequency band of the filter can be adjusted by adjusting a position of the movable side plate, without changing a related device. Compared with the prior art, the solution greatly saves device cost.
Description
technical field [0001] The invention relates to the technical field of radio communication, in particular to a filter, a communication device and a communication system. Background technique [0002] Microwave filter is a kind of lossless two-port network, which is widely used in microwave communication, radar, electronic countermeasures and microwave measuring instruments. It is used to control the frequency response of signals in the system, so that the useful signal frequency components are almost without attenuation. Through the filter, the transmission of unwanted signal frequency components is blocked. [0003] With the development of modern microwave communication, especially satellite communication and mobile communication, the selectivity of the system to the channel is getting higher and higher. The microwave filter is an important part of the communication system, and its performance determines the quality of the entire communication system. . [0004] Such as ...
Claims
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IPC IPC(8): H01P1/20H01P1/213
CPCH01P1/207H01P1/208
Inventor 许少峰
Owner HUAWEI TECH CO LTD