Impact Analysis of Amplitude Error on Angle Simulation Precision in RFSS
Amplitude error of each antenna in three-element array is an important factor affecting the angle simula-tion precision,which is a key index in radio frequency simulation system(RFSS).Analyzing the relationship between angle simulation error and amplitude error is of great significance.Firstly,under the maximum amplitude error limita-tion of three-element array,the problem of maximum angle simulation error at a fixed incoming wave direction is mod-eled.This optimization problem is a non-convex optimization problem,and by analyzing its structural characteristics,six possible values for the optimal solution are obtained.Secondly,the problem of maximum angle simulation error at any incoming wave direction within the three-element array is modeled.Based on the optimization results for the fixed incoming wave direction and structural properties of the problem,a closed-form expression for the maximum angle simu-lation error is obtained,and the apparent radiation centers corresponding to the maximum angle simulation error are re-vealed.Then,when the amplitude errors approach zero,the asymptotic characteristics of the maximum angle simulation error of the three-element array are analyzed,revealing that the asymptotic angle simulation error increases linearly with the amplitude error.Finally,the accuracy of the analysis results is proved via numerical simulations.
万方数据
维普
