Low-loss radiation-type leakage coaxial cable

Abstract

The invention discloses a low-loss radiation-type leakage coaxial cable, comprising an inner conductor, wherein the inner conductor is sequentially coated by an insulating layer, an outer slotted conductor and a shell; and a copper wire, a copper-clad aluminum conductor or a hollow copper tube is used as the inner conductor, and the insulating layer and the shell are made from a poly-4-methyl-1-pentene foaming material. The low-loss radiation-type leakage coaxial cable disclosed by the invention has the advantages of small loss, wide use frequency range, low attenuation and low voltage standing wave ratio.

Description

technical field [0001] The invention belongs to the field of cables, in particular to a low-loss radiation type leaky coaxial cable. Background technique [0002] With the improvement of living standards and the continuous development of the communication industry, people's requirements for communication are no longer limited to voice communication and low data flow communication (such as ordinary calls and text messages), but have gradually shifted to high data flow and multimedia communication. Communication methods, such as mobile high-speed Internet access, videophone, video conferencing, Internet of Things, etc. As a result, today's mobile communication 3G (CDMA800, CDMA2000, WCDMA, TD-SCDMA system) network, WLAN, WiFi network, and the upcoming commercial 4G (LTE system) network were born. For so many mobile communication systems, in indoor distribution, each operator still needs to build its own communication system to meet people's communication requirements, and maj...

AI Technical Summary

Problems solved by technology

For so many mobile communication systems, in indoor distribution, each operator still needs to build its own communication system to meet people's communication requirements, and major operators still use the traditional antenna coverage method or use 1 / 2 coupling leaky cable for coverage, but these two coverage methods have the following problems: when using antenna coverage, the system cost is high, the system standing wave ratio is high, the antenna radiation is large, the antenna radiation is uneven, there are coverage blind spots, and the signal is free Space loss is fast, engineering installation is complicated, and because of radiation, many residents have begun to reject and not allow the installation of antennas and many other problems; when using coupled leaky cable coverage, the electrical performance of the leaky cable is poor, the coverage distance is short, the signal fluctuates greatly, and is affected The environmental interference is large, and more importantly, it can only be used in 2G systems, and cannot meet the emerging 3G and 4G systems; using large-scale radiating leaky cables: poor bending performance, heavy, difficult to meet indoor complex engineering environments, indoors Basically not used in coverage

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