Estudio del comportamiento de cámaras semianecoicas utilizando una técnica híbrida bidimensional

Abstract

Semianechoic chambers are the most widely used emplacements for Electromagnetic Compatibility (EMC) Tests. Semianechoic chambers design is not an easy task, since they must behave like an ideal Open Area Test Site (OATS) within a quite narrow margin (±4 dB) in a wide frequency span (from 30 to 1000 MHz). There are several possible configurations for a Semianechoic Chamber, based on different technological solutions (dielectric foam absorbers of different shapes, ferrite absorbing tiles or a combination of both elements are found in most of the actual chambers). In this work a new and efficient technique for the analysis of 2-D simplified model of a chamber with arbitrary absorber is introduced and validated. Some advanced results are presented, and a 2-D estimator for studying the overall behaviour of the chamber is proposed.