%0 Journal Article
%T Theoretical analysis and an improvement method of the bias effect on the linearity of RF linear power amplifiers<br>射频线性功放的偏置电路对线性度影响的理论分析和改善方法
%A Wu Tuo
%A Chen Hongyi
%A Qian Dahong
%A <br>吴拓
%A 陈弘毅
%A 钱大宏
%J 半导体学报
%D 2009
%I 
%X Based on the Gummel-Poon model of BJT,the change of the DC bias as a function of the AC input signal in RF linear power amplifiers is theoretically derived,so that the linearity of different DC bias circuits can be interpreted and compared.According to the analysis results,a quantitative adaptive DC bias circuit is proposed,which can improve the linearity and efficiency.From the simulation and test results,we draw conclusions on how to improve the design of linear power amplifier.
%K bipolar
%K large-signal model
%K DC bias
%K linearity
%K adaptive bias<br>双极型晶体管，大信号模型，偏置电路，线性度，自适应偏置
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=025C8057C4D37C4BA0041DC7DE7C758F&aid=237FF2B0FA82B901C48D26646224964F&yid=DE12191FBD62783C&vid=340AC2BF8E7AB4FD&iid=94C357A881DFC066&sid=3074F4D5C79C1DD3&eid=DF92D298D3FF1E6E&journal_id=1674-4926&journal_name=半导体学报&referenced_num=0&reference_num=8