论文部分内容阅读
有线电视基础知识讲座第七讲卫星电视广播接收（下）刘修文（湖南攸县有线电视台４１２３００）２．馈源馈源由多个环形槽主波导、９０”介质移相极化器及园矩波导变换器组成。９０”介质移相器的作用是将国极化波转成线极化波；园矩波导变换器的作用是将馈源的园波导过渡...
Basic Lectures on Cable TV Lecture # 7 Satellite Television Broadcasting Reception (Part.) Liu Xiuwen (Hunan Youxian Cable Television Station 412300) 2. The feed source is composed of a plurality of annular groove main waveguides, a 90 “dielectric phase shifting polarizer and a toroidal waveguide transducer. The function of the 90” dielectric phase shifter is to convert the polarized wave into a linear polarized wave; The role of the moment waveguide converter is to feed the garden wave guide transition ...