Title :
Near field measurement of LF loop transmitters
Author :
Brunett, J.D. ; Liepa, Valdis V.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
The paper tabulates field decay for Hertzian transmitting loops in free space and in the presence of conducting ground planes, taking the practical effects of impedance coupling and loop dimensions into consideration. The resulting field attenuation rates correlate well with open area test site (OATS) measured data and can be readily used to extrapolate radiated emission limits at arbitrary distances in the extreme near field of low frequency loop sources.
Keywords :
conformance testing; electric impedance; electromagnetic compatibility; electromagnetic coupling; extrapolation; field strength measurement; loop antennas; transmitting antennas; 300 m; 9 to 490 kHz; EMC compliance testing; Hertzian transmitting loops; LF loop transmitters; OATS; conducting ground planes; field attenuation rates; field decay; free space; impedance coupling; loop dimensions; low frequency loop sources; near field measurement; open area test site; radiated emission limits; Attenuation; FCC; Frequency; Laboratories; Open area test sites; Size measurement; Testing; Transceivers; Transmitters; Transponders;
Conference_Titel :
Electromagnetic Compatibility, 2004. EMC 2004. 2004 InternationalSymposium on
Print_ISBN :
0-7803-8443-1
DOI :
10.1109/ISEMC.2004.1349817
