China has determined to establish test platform for digital terrestrial HDTV broadcasting in Beijing,shanghai and Shenzhen,which will certainly promote the coures of trial digital terrestrial HDTV broadcasting.To save...China has determined to establish test platform for digital terrestrial HDTV broadcasting in Beijing,shanghai and Shenzhen,which will certainly promote the coures of trial digital terrestrial HDTV broadcasting.To save frequency resources and reduce huge investments in antenna and feeder system,the transmission in adjacent channel,after all,is a better choice.This means adding a digital HDTV channel adjacent to the existing operational UHF analog TV channel.This paper introduces the operating principle and design proposal of the UHF adjacent channel duplexer.展开更多
文摘China has determined to establish test platform for digital terrestrial HDTV broadcasting in Beijing,shanghai and Shenzhen,which will certainly promote the coures of trial digital terrestrial HDTV broadcasting.To save frequency resources and reduce huge investments in antenna and feeder system,the transmission in adjacent channel,after all,is a better choice.This means adding a digital HDTV channel adjacent to the existing operational UHF analog TV channel.This paper introduces the operating principle and design proposal of the UHF adjacent channel duplexer.
