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第六讲卫星直播电视接收机的室内单元(一) 室外单元将进入天线的带宽为11.7~12.2GHz(通常只用其中一部分频段)的-80dBm的高频信号经低噪声放大、混频及前置第一中放后,由20m电缆输出0.75~1.25GHz
Lecture 6 Indoor Units of Satellite TV Receivers (I) Outdoor Units The high-frequency signals of -80dBm with an antenna bandwidth of 11.7-12.2GHz (usually only part of the frequency band) are amplified with low noise, Put the first release, by the 20m cable output 0.75 ~ 1.25GHz