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Experimental investigation of very small low frequency transmitting antennas

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1 Author(s)
Moritz, J.R. ; Radio Soc. of Great Britain, Hertfordshire Univ., Hatfield, UK

This paper describes an experimental evaluation of small (h<λ/100) wire transmitting antennas for amateur radio applications at 136 kHz and 73 kHz. Efficiencies between 0.0033% and 0.13% are obtained, whilst the radiation pattern is found to be that of a short monopole. Causes of low efficiency, and discrepancy between measured and calculated field strengths are discussed.

Published in:

HF Radio Systems and Techniques, 2003. Ninth International Conference on (Conf. Publ. No. 493)

Date of Conference:

23-26 June 2003