Title:
RELAY AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2005/020459
Kind Code:
A1
Abstract:
A relay amplifier provided at a branching point of an electric power line in an electric power line communication for amplifying communication signals, comprising a plurality of signal couplers provided at the respective electric power lines on both sides of the branching point for transmitting/receiving the communication signals to/from the electric power lines; and an amplifier for amplifying the communication signals inputted from the plurality of signal couplers.
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Inventors:
NAKAMURA KENZO (JP)
YAMASHITA NOBUYUKI (JP)
NAKAMURA MASAHIKO (JP)
OKAMOTO TAKAFUMI (JP)
OJIMA SAWAKO (JP)
HORI YASUAKI (JP)
NARIKAWA MASAFUMI (JP)
ISHIKAWA NAOKI (JP)
YAMASHITA NOBUYUKI (JP)
NAKAMURA MASAHIKO (JP)
OKAMOTO TAKAFUMI (JP)
OJIMA SAWAKO (JP)
HORI YASUAKI (JP)
NARIKAWA MASAFUMI (JP)
ISHIKAWA NAOKI (JP)
Application Number:
PCT/JP2004/012229
Publication Date:
March 03, 2005
Filing Date:
August 19, 2004
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
MITSUBISHI ELECTRIC CORP (JP)
NAKAMURA KENZO (JP)
YAMASHITA NOBUYUKI (JP)
NAKAMURA MASAHIKO (JP)
OKAMOTO TAKAFUMI (JP)
OJIMA SAWAKO (JP)
HORI YASUAKI (JP)
NARIKAWA MASAFUMI (JP)
ISHIKAWA NAOKI (JP)
MITSUBISHI ELECTRIC CORP (JP)
NAKAMURA KENZO (JP)
YAMASHITA NOBUYUKI (JP)
NAKAMURA MASAHIKO (JP)
OKAMOTO TAKAFUMI (JP)
OJIMA SAWAKO (JP)
HORI YASUAKI (JP)
NARIKAWA MASAFUMI (JP)
ISHIKAWA NAOKI (JP)
International Classes:
H04B3/58; H01F17/06; H04B3/56; H05K9/00; (IPC1-7): H04B3/58; H01F17/06; H05K9/00
Foreign References:
| JPS62147821A | 1987-07-01 | |||
| JPH07123035A | 1995-05-12 | |||
| JPS52109815A | 1977-09-14 | |||
| JPH08223092A | 1996-08-30 | |||
| JP2003134003A | 2003-05-09 | |||
| JPH09284255A | 1997-10-31 | |||
| JPH11284552A | 1999-10-15 | |||
| JPH11331051A | 1999-11-30 |
Other References:
See also references of EP 1657827A4
Attorney, Agent or Firm:
Shiga, Masatake (Yaesu Chuo-ku, Tokyo, JP)
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