SAMPLING MIXER AND RECEIVER

WIPO Patent Application WO/2007/061000

A1

A receiver and a sampling mixer capable of optimizing the sampling rate of an output signal in accordance with the band ratio of a modulation band to the RF frequency of a received signal. A sampling mixer comprises a history capacitor (6) that integrates input signals current-converted for a continuous time interval; rotation capacitors (7-14) that repeat the integration and discharging of the input signals; a digital control (104) that controls the integration intervals of the rotation capacitors (7-14); and a control part (105) that controls the discharging of the rotation capacitors (7-14). In the sampling mixer, the number of ones of the rotation capacitors (7-14) that are simultaneously connected to a buffer capacitor (15) is changed in accordance with the band ratio of the modulation band to the RF frequency. In this way, the decimation ratio is made variable, whereby the quantized noise during the A/D conversion can be reduced.

WO/2021/243923	SIGNAL MODULATION CIRCUIT, SIGNAL DEMODULATION CIRCUIT, MODULATION/DEMODULATION MODULE, AND ELECTRONIC DEVICE
JPH10233689	INTERMEDIATE FREQUENCY MODULATOR

HOSOKAWA YOSHIFUMI
MATSUOKA AKIHIKO
MIYANO KENTARO

PCT/JP2006/323341

May 31, 2007

November 22, 2006

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MATSUSHITA ELECTRIC IND CO LTD (JP)
HOSOKAWA YOSHIFUMI
MATSUOKA AKIHIKO
MIYANO KENTARO

H03D7/00; H04B1/26

US20030040294A1	2003-02-27
JP2002198846A	2002-07-12
JPH0936664A	1997-02-07

TAKAMATSU, Takeshi et al. (Nishi-Shimbashi 1-chome Minato-k, Tokyo03, JP)

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