新型Ka波段模拟预失真线性化器  

New Ka-B and Analog Predistortion Linearizer

作　　者：鲍鑫 张德伟[1] 邓海林[1] 吕大龙[1] 张毅[1] BAO Xin;ZHANG Dewei;DENG Hailin;LYU Dalong;ZHANG Yi(Information Engineering University,Zhengzhou 450001,China)

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2018年第3期297-300,共4页Journal of Information Engineering University

基　　金：核高基重大专项资助项目(2015ZX01010101)

摘　　要：为解决功率放大器产生的幅度和相位失真,在典型模拟预失真器的基础上设计了新型二极管模拟预失真器。该电路利用并联二极管增加电路可调节性,利用无源传输线实现电路匹配及阻抗变换。通过改变二极管的偏置电压,无源传输线的长度及特性阻抗值得到不同的幅度和相位补偿曲线。实验结果表明,在频率为29～31GHz区间内可达到10. 5dBm的幅度扩展和57°的相位扩张。In order to compensate for the amplitude and phase distortion of power amplifier, a new Ka-band analog predistortion linearizer is presented on the basis of typical analog predistortion device . The circuit can increase the adjustable property by using parallel diode, and realize circuit matching and impedance transformation by using passive transmission line. Different amplitude and phase compensation curves are obtained by varying the bias voltage of the diode, the length of the passive transmission line and the characteristic impedance. The simulation results show that the amplitude expansion of 10.5 dBm and the phase expansion of 57 degree can be achieved in the frequency range of 29～31 GHz. Key words：

关 键 词：肖特基二极管 预失真 幅度扩展 相位扩张 非线性失真 

分 类 号：TN715[电子电信—电路与系统]