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CATV系统亦称电缆电视系统。在该系统中大量地使用同轴电缆作为信号传输线。随着系统传输容量的扩大和使用频率的展宽,对同轴电缆提出了更高的要求。本文简述了CATV系统用射频同轴电缆的主要电气参数要求,并对藕状电缆的设计提供了计算公式、曲线。通过该电缆的电气参数的计算实例,提供了技术数据。文章最后部分列出了国内常用同轴电缆结构尺寸及电气参数。供有关科技人员参考。
CATV system is also called cable television system. In this system, a large number of coaxial cables are used as signal transmission lines. With the expansion of system transmission capacity and the use of frequency expansion, coaxial cables put forward higher requirements. In this paper, the main electrical parameters of RF coaxial cable for CATV system are briefly described, and the calculation formulas and curves are provided for the design of the lotus cable. An example of the calculation of the electrical parameters of the cable provides technical data. The last part of the article lists the commonly used coaxial cable structure size and electrical parameters. For scientific and technical personnel for reference.