Modeling Disruptions in Anechoic Chamber Antenna Measurements

This technical report presents a study focused on the impact of various disruptions within anechoic chambers on antenna measurements. Anechoic chambers are essential for accurate antenna testing, as they simulate free-space conditions. The report outlines a modeling approach that simulates the effects of common disruptions such as HVAC vents, lighting fixtures, and fire suppression systems on antenna performance. The study employs a commercial method of moments (MoM) computational electromagnetics package to analyze measurements in both far-field and near-field ranges. The results indicate that these disruptions can introduce significant measurement errors, with variations in gain observed under different conditions. The analysis provides a framework for estimating potential uncertainties in antenna measurements caused by these structural elements. The findings are relevant for engineers and researchers involved in antenna design and testing, as they highlight the need for careful consideration of environmental factors in measurement accuracy.