Communication cavity device and combining and distribution structure thereof

Abstract

Disclosed are a communication cavity component and a path-combining / splitting structure thereof. The path-combining / splitting structure comprises: a connector, where one end thereof forms a public port, while the other end is used for coupling a first frequency band signal of the communication cavity component, an impedance transformation transmission cable, where one end thereof is used for accessing a second frequency band signal of the communication cavity component, while the other end is connected to the connector, and comprises at least two cable segments having different impedances, a resonant column serial-connected to the mid-section of the impedance transformation transmission cable, and a medium support element used for fixing the resonant column and for insulating the resonant column from the communication cavity component. The present invention uses the path-combining / splitting structure to allow the two frequency band signals to implement great isolation and thereby to perform path-combination and path-splitting, and, by merging an elliptic function-type low-pass filter having a unique structure, allows to generate enhanced out-of-band rejection under the premise of ensuring a relatively high bandwidth, thus meeting a requirement for increased isolation between communication systems.

Description

【Technical field】 [0001] The invention relates to a communication cavity device for combining multiple communication signals, which is suitable for cavity devices such as combiners, duplexers, and filters, and specifically relates to a communication cavity device used in the communication cavity device. A combination and branch structure. 【Background technique】 [0002] With the development of triple play integration and the use of LTE frequency bands, compared with traditional frequency bands, new frequency bands are moving towards lower and higher directions. With the introduction of new standards or systems, the market has higher and higher requirements for combiners, hoping to realize the combination and splitting of wider frequency band signals. However, for such a wide-band combiner, the traditional implementation method can no longer meet the requirements, and a new implementation method needs to be introduced. [0003] The patent application with publication number...

AI Technical Summary

Problems solved by technology

In the technical solution disclosed in this patent application, a band-stop filter is used to realize a broadband low-frequency signal channel. The relative bandwidth of this low-frequency signal channel can reach 200%, but its limitation is that the band-stop filter has a It is difficult to achieve sufficient rejection in a wide frequency band, so the other signal channel can only be realized by a narrowband filter to ensure sufficient passband isolation between the two channels

Therefore, the application range of this combiner is limited and cannot adapt to the new market environment

[0004] The combination of two channels with high relative bandwidth requires skill to ensure the interference-free combination of the signals of the two channels. Although the combination and splitting structure of the known combiner can meet this requirement to some extent, But it may not be able to obtain better technical indicators

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