An Automated System for Measuring Electromagnetic-Field Strength with a Magnetic-Field Probe


IEICE TRANSACTIONS (1976-1990)   Vol.E67   No.4   pp.197-202
Publication Date: 1984/04/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Instrumentation

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An automated measurement system has been developed for measuring a magnetic-field strength inside and outside a motor vehicle exposed to an electromagnetic-field (EM-field). This measurement system consists of an EM-field generator unit, a magnetic-field probe, a data transmission unit with a fiber optic link, a graphic computer and its peripherals. The system is capable of measuring an EM-field strength of 4085 dBµA/m within a frequency range of 20200 MHz, with a certainty of 0.5 dB. The time required for the measurement is approximately three minutes per axis of X, Y or Z at one measuring point when the measurement is repeated five times per specific frequency at 2 MHz intervals for a frequency range of 20200 MHz. This measuring time is one-twentieth as long as that required by conventional unautomated measurement sets.