Improving shielding effectiveness measurements with a spherical dipole antenna

Author

Mori, Toshinori ; Shinozaki, Kaoru ; Kaneko, Yoshimasa

Author_Institution

NTT Commun. Switching Labs., Musashino, Japan

fYear

1994

fDate

22-26 Aug 1994

Firstpage

1

Lastpage

4

Abstract

This paper describes the effect of reradiated waves from the enclosure under test on shielding effectiveness measurements in which an optically-linked spherical dipole antenna is placed inside the enclosure. The results show a remarkable dependency of the measured shielding effectiveness on the receiving antenna height due to a height pattern difference between the reference field and the leakage field from the enclosure. This dependency reduces the measurement repeatability. A max-hold method is proposed to eliminate this effect so as to produce repeatable measurements

Keywords

antenna testing; dipole antennas; electromagnetic shielding; EM field measurement; enclosure under test; height pattern difference; leakage field; max-hold method; optical isolation technique; optically-linked antenna; receiving antenna height; reference field; repeatable measurements; reradiated waves; shielding effectiveness measurements; spherical dipole antenna; Antenna measurements; Dipole antennas; Electric variables measurement; Electromagnetic measurements; Electromagnetic radiation; Log periodic antennas; Position measurement; Receiving antennas; Testing; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1994. Symposium Record. Compatibility in the Loop., IEEE International Symposium on

Conference_Location

Chicago, IL

Print_ISBN

0-7803-1398-4

Type

conf

DOI

10.1109/ISEMC.1994.385695

Filename

385695