温度补偿偏置电压的预失真处理技术研究

doi:10.13190/jbupt.200505.102.huj

北京邮电大学学报 ›› 2005, Vol. 28 ›› Issue (5): 102-105.doi: 10.13190/jbupt.200505.102.huj

温度补偿偏置电压的预失真处理技术研究

胡军，刘文清

中国科学院安徽光学精密机械研究所，合肥 230031

出版日期:2005-10-28 发布日期:2005-10-28

Research on Predistortion Process Technology of Temperature Compensation Bias

HU Jun,LIU Wenqing

Anhui Institute of Optic and Fine Mechanics， Chinese Academy of Sciences, Hefei 230031, China

Online:2005-10-28 Published:2005-10-28

摘要/Abstract

摘要：

设计了一种双功率管互补式预失真功率放大器，并给出了温度补偿偏置电压的具体设计电路. 通过实验证明了该放大器可在20?MHz信号带宽内改善放大器3阶互调指标10?dB，其温度补偿方式可使放大器在温度变化时3阶互调指标的变化保持在±15?dB以内.

关键词: 偏置电压, 预失真, 温度补偿, 3阶互调

Abstract:

A kind of predistortion power amplifier by two radio frequency transistors reciprocal compensating was designed. And the temperature compensation circuit was presented. This predistortion power amplifier is verified by many experiments to improve intermodulation distortion(IMD) by 10?dB for a 20?MHz signal bandwidth, and the temperature compensation circuit can maintain IMD change within ±15?dB over the temperature range.

Key words: bias, predistortion, temperature compensation, intermodulation distortion

中图分类号:

TN830.6

胡军，刘文清. 温度补偿偏置电压的预失真处理技术研究[J]. 北京邮电大学学报, 2005, 28(5): 102-105.

HU Jun,LIU Wenqing. Research on Predistortion Process Technology of Temperature Compensation Bias[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2005, 28(5): 102-105.

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温度补偿偏置电压的预失真处理技术研究

Research on Predistortion Process Technology of Temperature Compensation Bias

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