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本文以UHF波段1Kw移动多媒体广播发射机为例,介绍了CMMB基本技术和调制发射的基本原理,并对如何改善带肩比、提高功放效率做了简要的分析。
This paper takes 1Kw mobile multimedia broadcast transmitter in UHF band as an example, introduces the basic principle of CMMB and modulation transmission, and gives a brief analysis on how to improve the shoulder-shoulder ratio and improve the power amplifier efficiency.