Operation of electromagnetic reverberation chambers with wave diffractors at relatively low frequencies

被引：58

作者：

Arnaut, LR ^{[1
]}

机构：

[1] Natl Phys Lab, Ctr Electromagnet Metrol, Teddington TW11 0LW, Middx, England

来源：

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY | 2001年 / 43卷 / 04期

关键词：

composite quality factor; diffractors; extended Weyl law; field homogeneity; field isotropy; lowest usable frequency; mode density; reverberation chamber;

D O I：

10.1109/15.974645

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The dependence of the modal density on chamber geometry is analyzed, for general unstirred reverberation chambers at relatively low frequencies of operation. An expression for the lowest usable frequency is derived based on the chamber mode density. The use of curved wave diffractors is investigated as a method for increasing the average mode density. The specific effect of corner, edge, surface and volume diffractors on the mode density and quality factor of a nominally rectangular shielded room is analyzed as a function of diffractor size, density, and operating frequency. The present paper complements earlier studies on field statistics of undermoded reverberation chambers and performance of acoustic-type diffusers in electromagnetic reverberation chambers.

引用

页码：637 / 653

页数：17

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