The Use of Ray-tracing and Genetic Algorithms to Optimize a Tapered Anechoic Chamber
Anechoic chambers are used for both emission and immunity testing. There are three major types of anechoic chamber including rectangular, tapered, and double horn. The tapered chamber is an established design concept used for antenna testing below 1 GHz but the ferrite tiles used to line the inside of the chamber are extremely expensive. This paper describes a method of reducing the number of tiles, whilst ensuring a reliable test environment. In this paper, the ray-tracing method for waves propagation is used for evaluation of the reflec-tivity level of a tapered anechoic chamber, and genetic algorithms are used to optimize the layout of ferrite tile absorber in a partially lined enclosure to produce a best performance. The results show that it is possible to cover just 80％ of the surface of the enclosure with ferrite absorber and obtain good agreement by fully lined enclosure with an error of less than 3 percent over the whole test points.
S.M.J.Razavi M.Khalaj-Amirhosseini
College of Electrical Engineering,Iran University of Science and Technology,Tehran,Iran
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
763-767
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）