Title:
電力信号のサンプリングを用いる無線給電通信装置および方法
Document Type and Number:
Japanese Patent JP4008961
Kind Code:
B2
Abstract:
A circuit (34) for data recovery in a wireless powered communication device (10) obviates the need for the costly high power consumption filters of prior art devices by deriving a clock signal from the power coil (18), and then sampling the data coil (20) signal with the derived sampling clock. The step of deriving a clock signal from the power signal causes the component of the power signal present on the data signal to be aliased to DC which is then easily rejected with a low order high pass or bandpass filter (38). Furthermore, the data signal may be amplified to a desired level suitable for amplitude discrimination by a simple comparator circuit (40) with hysteresis. Demodulation of the data signal is easily accomplished in the digital domain using a digital demodulator (32).
Inventors:
Connel, Lawrence Yee
Hollenbeck, Neil W.
Patre, Kennis A.
Hollenbeck, Neil W.
Patre, Kennis A.
Application Number:
JP51193098A
Publication Date:
November 14, 2007
Filing Date:
August 28, 1997
Export Citation:
Assignee:
MOTOROLA INCORPORATED
International Classes:
G06K19/07; G06K7/08; H02J17/00; H04B5/00; H04B5/02; H04L25/02; H04L27/06
Domestic Patent References:
| JP7123120A |
Attorney, Agent or Firm:
Mamoru Kuwagaki
Masanori Honjo
Masanori Honjo