Summary
International Symposium on Antennas and Propagation
2010
Session Number:2WD1
Session:
Number:2WD1-5
Evaluation of Anechoic Chamber for EMI over 1GHz by Pseudo Plane-Wave Spectrum
Michitaka Ameya, Satoru Kurokawa, Ikuo Watanabe, Mikito Yamaguchi, Ryoichi Hasumi,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
Recently, site evaluation of anechoic chamber for EMI over 1GHz has attracted much attention because EU and VCCI start the regulation for EMI above 1GHz from October 2010. Although there are a lot of evaluation methods for anechoic chamber [1] [2], CISPR16-1-4[3] defines an evaluation method, SVSWR method, for EMI anechoic chamber over 1GHz. The SVSWR is measured at the only four positions (front, right, left, and center) at the height above a turntable of 1 m. Only these positions may not be enough for the reflection analysis of anechoic chambers for EMI over 1GHz. In this paper, we propose a new site evaluation method using pseudo plane-wave spectrum. The proposed method enables to obtain the intensity and the angle of arrival of reflection waves and facilitates improving performance of anechoic chambers.