共用电视天线,故名思义,就是多家电视用户为了获取高质量的电视信号通过电缆分配网共用一套电视接收装置(天线等)。这种新的广播系统在40年代开始得到应用,简称CATV。当初只是为了解决偏僻地区接收不好电视的问题。而今天,随着电视卫星传播、双向技术的发展以及采用了光纤技术、计算机设备等才使共用天线的内容和应用更加丰富与广泛。近年来,我国的电视广播与城市建设事业发展很快,于是电视接收中的重影和干扰就成了迫切需要解 Shared TV antenna, the name suggests, is that many television users in order to obtain high-quality television signals through a cable distribution network sharing a television receiver (antenna, etc.). The new broadcast system began to be used in the 1940s, referred to as CATV. Originally only to solve the problem of poor reception of television in remote areas. Today, with the spread of television satellites, the development of bi-directional technologies, and the introduction of optical fiber technologies, computer equipment and the like make the contents and applications of shared antennas even more rich and extensive. In recent years, the cause of China’s television broadcasting and urban construction has developed rapidly, so the ghosting and interference in television reception have become an urgent need for solution