Correction factors for normalized site attenuation

Author

Sugiura, Akira ; Shinozuka, Takashi ; Nishikata, Atsuhiro

Author_Institution

Min. of Posts & Telecommun., Tokyo, Japan

Volume

34

Issue

4

fYear

1992

fDate

11/1/1992 12:00:00 AM

Firstpage

461

Lastpage

470

Abstract

EMI standards require test sites to be validated by measuring the normalized site attenuation (NSA) instead of the classical site attenuation (CSA). Theoretical investigations are, therefore, carried out on the general formulation of NSA and CSA, where chain matrices are introduced to account for the effects of antenna circuits. It is found that the theoretical NSA values given by the standards are based on three assumptions inappropriate to measurements using tuned dipole antennas. Thus, correction is considered requisite for every NSA measurement when tuned dipoles are used. In this connection, new correction factors are proposed for various measurement configurations at 3-, 10-, and 30-m test sites. In addition, numerical evaluations are made on the correction factors applicable to the NSA measurements with antenna factors calibrated at 2 or 3 m above a metal plane

Keywords

attenuation measurement; dipole antennas; electromagnetic interference; measurement standards; 10 m; 3 m; 30 m; EMI standards; antenna circuits; antenna factors; classical site attenuation; correction factors; measurement configurations; metal plane; normalized site attenuation; numerical evaluations; test sites; tuned dipole antennas; Antenna measurements; Antenna theory; Attenuation measurement; Circuits; Dipole antennas; Electric variables measurement; Electromagnetic interference; Electromagnetic measurements; Measurement standards; Testing;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.179279

Filename

179279