MEASUREMENT OF MAGNETIC COMPLEX ANTENNA FACTOR OF A DOUBLE-LOADED SHIELDED LOOP ANTENNA BY 3-ANNTENA METHODS

Takashi Iwasaki, Makoto Takashima

Abstract

This paper presents two methods for determining the complex antenna factor (CAF) of a shielded loop antenna for HF magnetic field measurements. A circuit model is introduced to apply the field-transferred 3-antenna method to double-loaded shielded loop antennas. In addition, a new 3-antenna method is proposed, where theoretical calculation and circuit measurement are combined. Experiments are made in an anechoic chamber in the frequency range of 50 MHz to 1000 MHz. The magnetic CAF of various shielded loop antennas can be determined by the proposed methods.

Keywords

EMC/EMI, Electromagnetic sensor, Shielded loop antenna, Antenna factor, 3-anntena method

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IMEKO-TC4-2001-008.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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