Title:
半導体集積回路及び非接触型情報媒体
Document Type and Number:
Japanese Patent JP4197417
Kind Code:
B2
Abstract:
A semiconductor integrated circuit includes a supply voltage generator for rectifying a signal received by an antenna coil and generating a supply voltage set at a predetermined voltage by a regulator, and a demodulator. The demodulator includes a demodulation circuit for demodulating an input signal and outputting the demodulated input signal, a resistor whose one end is connected to one end of the antenna coil, a diode whose anode is connected to the other end of the resistor and whose cathode is connected to a node located to the input end of the demodulation circuit, a first capacitance connected between a node at which the resistor and the diode are connected to each other and a grounding conductor, and a second capacitance connected between a node at which the diode and the demodulation circuit are connected to each other and a grounding conductor.
Inventors:
Joji Nakane
Kaku Tatsumi
Kaku Tatsumi
Application Number:
JP2002265518A
Publication Date:
December 17, 2008
Filing Date:
September 11, 2002
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
G06K19/07; H02J5/00; H04B5/02
Domestic Patent References:
| JP10240889A | ||||
| JP9147070A | ||||
| JP2002236890A |
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Koyama
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Teshima Masaru
Atsushi Fujita
Hiroshi Koyama
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Teshima Masaru
Atsushi Fujita