Hardware & Software to Realize Broad Range AGC in PLC Communication
Yang Si-xiang · Journal of Military Communications Technology · 2006
In PLC communication channel,the amplitude of signal fluctuates in a broad scope.A SSB audio communication system was analyzed with a guide frequency.The digital commutation and demodulation were adopted to detect the amplitude precisely.And then,the attenuator,AGC chip AD603 and software airthmetic were used to accomplish the AGC.The AGC system can realize 70 dB～80 dB dynamic scope AGC, and the resulted signal has 0.1 dB fluctuation.