自适应加权最小二乘法在中波发射机阻抗测量与匹配的应用  

Application of Adaptive Weighted Least Square Method in Impedance Measurement and Matching of AM Transmitter

作　　者：许晓春 Xu Xiaochun(Zhejiang Province AM Transmission Management Center,Zhejiang 310012,China)

机构地区：[1]浙江省中波发射管理中心,浙江310012 [2]浙江省广播电视局科学技术委员会覆盖专业委员会

出　　处：《广播与电视技术》2021年第6期107-110,共4页Radio & TV Broadcast Engineering

摘　　要：本文提出了一种基于自适应加权最小二乘法的复平面阻抗测量校准与匹配方法。该方法通过加权系数的自适应变化改变代价函数及其梯度,使得测量结果误差渐近式地缩小,并且网络实际阻抗逼近50欧姆匹配点。In this paper, a calibration and matching method for complex plane impedance measurement based on adaptive weighted least square method is proposed. In this method, cost function and its gradient are changed by adaptive change of weighting coefficient, so that measurement error is reduced asymptotically, and actual network impedance is close to 50 ohm matching point.

关 键 词：自适应加权 最小二乘法 阻抗测量 阻抗匹配 

分 类 号：TN934.1[电子电信—信号与信息处理]