共用天线电视系统前端设备应用研究

Research application of front-end equipment in common antenna television system

一一列举了电视系统前端设备主部件,如天线放大器、U/V变换器、V/V变换器、放大器、混合器,辅助设备调制器、导频信号发生器、自动关机装置、频道滤波器、其他演播室设备以及设备组成形式即直接混合式、前端放大—混合式、放大—放大—混合式、放大—混合—放大式、放大混合—混合—放大式等,分别介绍了它们的构成、作用和功能,并分析各部分共用天线电视系统前端设备的有关应用。

The main components of front-end equipment of TV system are listed,such as antenna amplifier,U/V converter,V/V converter,amplifier,mixer,auxiliary equipment modulator,pilot signal generator,automatic shutdown device,channel filter,other studio equipment and equipment composition,namely direct mixing,front-end amplification-mixing,amplification-amplification-mixing and playback.The composition,effect and function of large-hybrid-amplifier and amplifier-hybrid-amplifier are introduced respectively,and the application of front-end equipment of common antenna TV system in each part is analyzed.