Reaction Analysis of Quiet Zone Error Impact on Relative Gain Accuracy

This paper presents an error model using the reaction integral to quantify measurement uncertainty in relative gain pattern measurements under near-plane wave conditions. By deliberately introducing errors into an ideal Quiet Zone, the study evaluates their impact through Root Mean Square metrics and Site Acceptance Standard Error criteria. The investigation focuses on assessing the tightness of the upper bound on the relative gain accuracy, as determined by the Root Mean Square error of the field across the antenna surface. Furthermore, the uncertainty in estimating Quiet Zone error metrics from incomplete but widely used scanning techniques is illustrated through practical examples.