正交合成电路对射频功放谐波的影响  

Influence of Orthogonal Combining Circuit on Harmonic of RF Power Amplifier

作　　者：顾卫东[1] 董亮[1] GU Wei-dong;DONG liang(No.36 Research Institute of CETC,Jiaxing Zhejiang 314033,China)

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2020年第1期41-44,共4页Communication Countermeasures

摘　　要：由于功率管的非线性,射频大功率放大器必然产生谐波分量。除了常应用到的滤波器技术来控制谐波分量外,还可以通过不同的功放设计技术来控制谐波输出幅度,从而达到频谱管控的目的。单管放大电路的功率输出能力有限,功率合成技术是实现大功率输出的必备技术,不同的合成方式对放大器最终输出的谐波分量产生了不同的影响。文章对正交合成电路作了理论分析和仿真验证,在大功率功放产品中以差相移正交合成实例加以佐证。RF power amplifiers will certainly yield harmonics due to the nonlinearity of the power transistors.For the purpose of spectrum control,variety power amplifier design technologies can be used as well as filter technologies which are used widely.Power combining technologies are necessary to fulfill high power output because of the limited power capability of a single power transistor.Different combining methods will make different effects on the harmonic components of the output signal of the amplifier.The theoretical analysis and simulation verification are presented in this paper.It is also verified in a high power amplifier with differential or-thogonal combining circuits.

关 键 词：频谱管控 功率合成 差相移正交 谐波消除 

分 类 号：TN722.75[电子电信—电路与系统]