Title:
非接触電子装置
Document Type and Number:
Japanese Patent JP5786194
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To operate a contactless electronic device with a transistor using carrier accumulation stably irrespective of communication range and communication condition, and to increase a communicable range of the contactless electronic device.SOLUTION: There is provided a contactless electronic device constituted by a transistor using carrier accumulation that comprises: a first rectification circuit which converts a signal received by an antenna into a first DC power supply voltage; a second rectification circuit which converts the signal received by the antenna into a second DC power supply voltage; a logic circuit which runs with a voltage resulting from a first smoothing capacitor's smoothing the first DC power supply voltage; a modulation signal amplification circuit which amplifies a first modulation signal output by the logic circuit and outputs the amplified modulation signal as a second modulation signal; a load modulation circuit which, on the basis of the second modulation signal, modulates the voltage resulting from the first smoothing capacitor's smoothing the first DC power supply voltage.
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Inventors:
Taisuke Ozaki
Takanori Yamazoe
Hiroyuki Uchiyama
Yuki Wakana
Satoshi Kawamura
Takanori Yamazoe
Hiroyuki Uchiyama
Yuki Wakana
Satoshi Kawamura
Application Number:
JP2011168352A
Publication Date:
September 30, 2015
Filing Date:
August 01, 2011
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G06K19/07; G06K19/077; H04B5/02
Domestic Patent References:
| JP2005267643A | ||||
| JP2011040890A |
Attorney, Agent or Firm:
Masahiro Fujii
Masaki Goto
Masaaki Iida
Masaki Goto
Masaaki Iida