Title:
POWER TRANSMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/033407
Kind Code:
A1
Abstract:
Provided is a low-profile and small-size power transmission device capable of transmitting large power at high efficiency. The power transmission device has a first resonator (36, 37), a second resonator (38, 39) coupled to the first resonator through electromagnetic waves, a first circuit (51) connected to the input terminals of the first resonator, and a second circuit (52) connected to the output terminals of the second resonator. The first resonator is isolated from the second resonator. The output impedance of the first circuit is different from the input impedance of the second circuit. The impedance when viewing the first resonator side from the input terminals of the first resonator and the output impedance of the first circuit are matched each other, and the impedance when viewing the second resonator side from the output terminals of the second resonator and the input impedance of the second circuit are matched each other.
Inventors:
HARA KAZUNORI (JP)
KATAGISHI MAKOTO (JP)
SHINODA HIROSHI (JP)
TERADA TAKAHIDE (JP)
KATAGISHI MAKOTO (JP)
SHINODA HIROSHI (JP)
TERADA TAKAHIDE (JP)
Application Number:
PCT/JP2013/073837
Publication Date:
March 12, 2015
Filing Date:
September 04, 2013
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H02J17/00
Domestic Patent References:
| WO2012039045A1 | 2012-03-29 |
Foreign References:
| JP2013051864A | 2013-03-14 | |||
| JPH10136587A | 1998-05-22 | |||
| JP2002078247A | 2002-03-15 | |||
| JPH10145987A | 1998-05-29 | |||
| JPH0646563A | 1994-02-18 |
Attorney, Agent or Firm:
TSUTSUI, YAMATO (JP)
Tsutsui Daiwa (JP)
Tsutsui Daiwa (JP)
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