Title :
A study on the characteristics of semi-anechoic chambers below 30 MHz
Author :
Ishii, M. ; Yoshida, Hiroyuki ; Danjo, Yasuyuki ; Kurokawa, Satoru ; Fujii, Kenichi
Author_Institution :
Nat. Metrol. Inst. of Japan, Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan
Abstract :
Several methods for evaluating test sites for EMI measurements above 30 MHz have been regulated by the CISPR, ANSI etc. Nowadays the demand for EMI measurements below 30 MHz is increasing; however, the methods to evaluate the test sites for such EMI measurements in the low frequency have not yet been regulated. In general, a loop antenna is used for measuring magnetic fields below 30 MHz, whereas a monopole antenna is used for measuring electric fields in the frequency band. Recently, we measured the characteristics of several semi-anechoic chambers (SACs) using monopole antennas and loop antennas. In this paper, we discuss and report a study on the characteristics of two types of SACs through measurement and simulation.
Keywords :
ANSI standards; anechoic chambers (electromagnetic); electric field measurement; electromagnetic interference; loop antennas; magnetic field measurement; monopole antennas; ANSI; CISPR; EMI measurement; International Special Committee on Radio Interference; SAC; electric field measurement; frequency band; loop antenna; magnetic field measurement; monopole antenna; semianechoic chamber characteristics; Antenna measurements; Antennas; Ferrites; Frequency measurement; Magnetic field measurement; Magnetic fields; Transmission line measurements; below 30 MHz; loop antenna; monopole antenna; semi-anechoic chamber; site evaluation;
Conference_Titel :
Electromagnetic Compatibility (EMC Europe), 2014 International Symposium on
Conference_Location :
Gothenburg
DOI :
10.1109/EMCEurope.2014.6931037
