APERTURE EXCITATION OF ELECTRICALLY LARGE, LOSSY CAVITIES

被引：290

作者：

HILL, DA ^{[1
]}

MA, MT ^{[1
]}

ONDREJKA, AR ^{[1
]}

RIDDLE, BF ^{[1
]}

CRAWFORD, ML ^{[1
]}

JOHNK, RT ^{[1
]}

机构：

[1] UNIV COLORADO, DEPT ELECT & COMP ENGN, BOULDER, CO 80309 USA

来源：

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY | 1994年 / 36卷 / 03期

关键词：

D O I：

10.1109/15.305461

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：

We present a theory based on power balance for aperture excitation of electrically large, lossy cavities. The theory yields expressions for shielding effectiveness, cavity Q, and cavity time constant. In shielding effectiveness calculations, the incident field can be either a single plane wave or a uniformly random field to model reverberation chamber or random field illumination. The Q theory includes wall loss, absorption by lossy objects within the cavity, aperture leakage, and power received by antennas within the cavity. Extensive measurements of shielding effectiveness, cavity Q, and cavity time constant were made on a rectangular cavity, and good agreement with theory was obtained for frequencies from 1 to 18 GHz.

引用

页码：169 / 178

页数：10

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