SAMPLING CIRCUIT AND RECEIVER USING SAME

WIPO Patent Application WO/2010/064450

A1

Disclosed are a sampling circuit and a receiver having a high degree of freedom of the filter design and excellent characteristics for removing an interfering wave.  Provided also are a sampling circuit and a receiver having a low level of the higher harmonic spurious.  The sampling circuit (100) includes: a charge sampling circuit (101) which executes sampling of an input signal; and a plurality of charge sharing circuits (102-1 to 102-N) connected in parallel to the output stage of the charge sampling circuit (101).  The charge sharing circuits (102-1 to 102-N) includes: a charge sharing circuit group (102) having transmission functions different from one another; a synthesis circuit (103) which is arranged at the output side of the charge sharing circuit group (102) and synthesizes the outputs of the charge sharing circuits (102-1 to 102-N); and a digital control unit (104) which outputs a control signal for controlling the operation of the charge sharing circuit group (102) and the synthesis circuit (103).  This configuration realizes a sampling circuit having excellent characteristics for removing an interfering wave.

JP4017897	High frequency switch circuit
JPH0613816	BIAS CIRCUIT FOR TRANSISTOR POWER AMPLIFIER
JPS5857805	STEREO EQUIPMENT

MORISHITA YOHEI

PCT/JP2009/006645

June 10, 2010

December 04, 2009

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PANASONIC CORP (JP)
MORISHITA YOHEI

H03K17/00; H03H17/02; H03H19/00

JP2008011493A	2008-01-17
US20030035499A1	2003-02-20

WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)

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