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Title:
MAGNETIC WAVE ANTENNA AND MAGNETIC WAVE COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/145515
Kind Code:
A1
Abstract:
Disclosed is a low-cost magnetic wave antenna and magnetic wave communication device which perform magnetic wave communication over intermediate distances using magnetic wave signals in air, in substances with a comparatively large magnetic wave signal transmission loss, in fresh or sea water with a salt concentration of 0% to 10%, or in a combination of these. A magnetic wave signal at frequencies of 1kHz or greater and with a comparatively large bandwidth is transmitted through air or sea water from a magnetic wave antenna (213) connected to a magnetic wave communication device (21), and the transmitted magnetic wave signal is received by a magnetic wave antenna (223) connected to a magnetic wave communication device (22). Because the aforementioned magnetic wave signal propagates over intermediate distances from tens of meters to tens of kilometers through the atmosphere or sea water with a comparatively low loss, the aforementioned magnetic wave signal can be directly transmitted and received between the magnetic wave antenna (213) and the magnetic wave antenna (223) seamlessly through the atmosphere and sea water.

Inventors:
KAWANO MINORI (JP)
KAWANO HIRONORI (JP)
Application Number:
PCT/JP2011/061028
Publication Date:
November 24, 2011
Filing Date:
May 13, 2011
Export Citation:
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Assignee:
RADIO COMM SYSTEMS LTD (JP)
KAWANO MINORI (JP)
KAWANO HIRONORI (JP)
International Classes:
H04B13/02
Foreign References:
JP2009302963A2009-12-24
JP2009093157A2009-04-30
JPH10341104A1998-12-22
JP2001352210A2001-12-21
JPH09326736A1997-12-16
JP2006270995A2006-10-05
JP2009236888A2009-10-15
JP2005223742A2005-08-18
JP2003060409A2003-02-28
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Claims: