Extrapolating near-field emissions of low-frequency loop transmitters

• Published in: IEEE transactions on electromagnetic compatibility Vol. 47; no. 3; pp. 635 - 641
• Main Authors: Brunett, J.D., Liepa, V.V., Sengupta, D.L.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.08.2005; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna radiation patterns; Antennas; Applied sciences; Attenuation; Electromagnetic compatibility; Electromagnetic compatibility (EMC); electromagnetic fields; electromagnetic near field; electromagnetic propagation; Electronics; Exact sciences and technology; Extrapolation; Information, signal and communications theory; Loop antennas; measurement errors; Oats; Radiocommunications; Tables; Telecommunications; Telecommunications and information theory; Testing, measurement, noise and reliability; Transmission; Transmitters. Receivers; Transmitting antennas; Near field; Waveform; measurement errors; Electromagnetic compatibility; Field emission; Low frequency; Experimental result; Electromagnetic compatibility (EMC); Electromagnetic wave propagation; Transmitting antenna; electromagnetic fields; electromagnetic near field; Electromagnetic field; Emission measure; Measurement method; Measurement error; Geometrical factor; electromagnetic propagation; Loop antenna; Open area test sites
• ISSN: 0018-9375; 1558-187X
• DOI: 10.1109/TEMC.2005.853168

This paper investigates the emission of fields and field attenuation rates from electrically small transmitting loop antennas in the presence of a general half-space. Considerations are made for the practical effects of antenna loop dimension and source-to-sensor impedance coupling. The resulting field attenuation rates correlate well with open area test site (OATS) measurements. The tables provided may be readily used to extrapolate measured low-frequency emissions to common regulatory limit locations.