Semiconductor integrated circuit and noncontact information...

Details Semiconductor integrated circuit and noncontact information... Semiconductor integrated circuit and noncontact information...

2006-11-21

2006-11-21

Kebede, Brook (Department: 2823)

Active solid-state devices (e.g., transistors, solid-state diode

Punchthrough structure device

C235S492000, C455S182200

Reexamination Certificate

active

07138699

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.

REFERENCES:
patent: 5404587 (1995-04-01), Okanobu
patent: 6525362 (2003-02-01), Sadayuki
patent: 9-147070 (1997-06-01), None
patent: 10-240889 (1998-09-01), None
patent: 2001-86666 (2001-03-01), None
patent: 2002-236890 (2002-08-01), None

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