共用天线电视系统,是一种多台电视接收机共用一套天线的设备。共用天线将接收来的电视信号,经过放大、混合、频道变换等处理,然后再将信号合理的分配给各电视接收机,因此得名为共用天线电视系统。又由于共用天线电视系统设备之间采用同轴电缆做为信号传输线,因而又称为电缆电视系统。 共用天线电视系统,简称CATV是英文“Community Antennd Televison”的 Shared antenna television system, is a multi-television receiver to share a set of antenna equipment. The common antenna will receive the television signal, after amplification, mixing, channel conversion and other processing, and then the signal is allocated to the television receiver, so named for the common antenna TV system. And because of the common antenna TV system equipment used between the coaxial cable as a signal transmission line, which is also known as the cable television system. The common antenna television system, referred to as CATV is English “Community Antennd Televison”