Title:
ワイヤレス受電装置、電子機器、ＦＳＫが施された電力信号の復調方法
Document Type and Number:
Japanese Patent JP6902846
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress reduction in communication quality under such a situation that ringing occurs.SOLUTION: A rectification circuit 304 includes an H-bridge circuit 330 and rectifies an AC current flowing in a reception antenna 301. A smoothing capacitor 306 smooths an output of the rectification circuit 304. A demodulator 350 demodulates a power signal subjected to FSK. A first comparator CMP1 compares a voltage Vat a first AC input terminal AC1 with a first threshold voltage Vto generate a first detection signal S11. A second comparator CMP2 compares a voltage Vat a second AC input terminal AC2 with a second threshold voltage Vto generate a second detection signal S12. A clock generation circuit 352 generates a frequency detection clock CLK_OUT that makes transition depending on one edge of the first detection signal S11 and one edge of the second detection signal S12. A frequency detection circuit 354 detects a frequency of the frequency detection clock CLK_OUT.SELECTED DRAWING: Figure 5
Inventors:
Iwa saki Tatsuya
Takeshi Nozawa
Isamu Yamamoto
Kazuyoshi Yasuoka
Takeshi Nozawa
Isamu Yamamoto
Kazuyoshi Yasuoka
Application Number:
JP2016211335A
Publication Date:
July 14, 2021
Filing Date:
October 28, 2016
Export Citation:
Assignee:
ROHM Co., Ltd.
International Classes:
H04B5/02; H02J50/10; H02J50/80; H04M1/00
Domestic Patent References:
| JP2008206325A | ||||
| JP2010074950A | ||||
| JP9298485A | ||||
| JP2011211780A |
Foreign References:
| WO2014039088A1 | ||||
| US8156365 | ||||
| US20140265610 | ||||
| US20150326143 |
Attorney, Agent or Firm:
Sakaki Morishita
Masaki Taiki
Masaki Taiki