Title:
SIGNAL COUPLING DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/063627
Kind Code:
A1
Abstract:
In a capacitive coupler (CCU) 100 used in a power line communication system that
performs communication by putting a high-frequency signal on a power line (8),
increasing the capacitance of a high-voltage capacitor (1) in order to increase
the coupling efficiency in the low-frequency region of the high-frequency signal
has been problematic, for example, in that the cost of the capacitor is increased
and the breakdown voltage is lowered. In a signal coupling device of this invention,
a drain coil (2) used in the CCU (100) is wound around a magnetic core (21) to match
a frequency in the characteristic region in which the Q value of the complex permeability
of a magnetic material constituting the magnetic core (21) increases with a frequency
in the low-frequency region of the high-frequency signal. This enables the coupling
efficiency in the low-frequency region of the high-frequency signal to increase,
so that a high coupling efficiency is obtained in a wider frequency range.
Inventors:
MURATA YUICHIRO (JP)
ABE JUNICHI (JP)
TSURIMOTO TAKAO (JP)
ABE JUNICHI (JP)
TSURIMOTO TAKAO (JP)
Application Number:
PCT/JP2006/315579
Publication Date:
June 07, 2007
Filing Date:
August 07, 2006
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MURATA YUICHIRO (JP)
ABE JUNICHI (JP)
TSURIMOTO TAKAO (JP)
MURATA YUICHIRO (JP)
ABE JUNICHI (JP)
TSURIMOTO TAKAO (JP)
International Classes:
H04B3/56; H01F17/06
Foreign References:
| US20010038329A1 | 2001-11-08 | |||
| JP2005073208A | 2005-03-17 | |||
| JP2003023362A | 2003-01-24 |
Attorney, Agent or Firm:
OIWA, Masuo (Minamitsukaguchi-cho 2-chome Amagasaki-sh, Hyogo 12, JP)
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