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

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.