外推法天线增益测量的核心算法及实验研究

The Core Algorithm and Experimental Research of Antenna Gain Measurement by Extrapolation

基于外推法测量原理研究了外推法天线增益测量核心算法,重点在于天线互耦的滤波抑制、功率级数展开式的拟合和任意距离下的天线增益求解。此外,还基于以上核心算法设计了一款外推法天线增益测量界面,为外推法天线增益的精密测量提供便利。最后,开展了W波段标准天线的增益校准实验,增益测量结果与NPL的测量偏差小于0.04 dB,实现了较好的等效一致性。

Based on the principle of extrapolation method,the core algorithm of extrapolation antenna gain measurement is studied.The innovation lies in the design of antenna mutual coupling suppression filtering,fitting of power series expansion and impedance mismatch correction,and the antenna gain calculation at any distance.In addition,an operation interface of extrapolation antenna gain measurement is designed basing the above core algorithm for antenna gain measurement convenience.Finally,The gain calibration experiment of W-band standard antenna is carried out,the gain measurement deviation is less than 0.04 dB with the NPL measurement,which achieves good equivalent consistency.