STRIDE's 3 meters EMC semi-anechoic chamber design considerations and compliance to standards

Abstract

This paper discuss the design considerations of a semianechoic chamber (SAC) for Science and Technology Research Institute for Defense's (STRIDE) to cater for electromagnetic compatibility (EMC) measurements in compliance to military and commercial standards. The SAC size is limited to the available space at STRIDE premise of 13.8 meters length, 5.88 meters width and 6.9 meters height. Similarly the size of the control room (CR) and the amplifier room (AR) are restricted to the adjacent smaller space. All of the rooms including the SAC are incorporated with RF shielding, however only the SAC is fitted with microwave absorbers. Three types of test are performed to validate the performance of the SAC which are Shielding Effectiveness (SE), Field Uniformity (FU) and Normalize Site Attenuation (NSA).