Receiver, receiving method, filter circuit, and control method

Details Receiver, receiving method, filter circuit, and control method Receiver, receiving method, filter circuit, and control method

2011-07-05

2011-07-05

Payne, David C. (Department: 2611)

Pulse or digital communications

Receivers

C341S143000, C341S155000, C341S144000, C341S150000

Reexamination Certificate

active

07974363

ABSTRACT:
A receiver supporting a plurality of radio communication systems having different specifications includes a setting unit, a clock generation circuit, a voltage-current conversion amplifier, a switch, integrators, an AD conversion circuit, and a feedback circuit. The setting unit sets a value suitable for a carrier frequency used in one selected radio communication system. The clock generation circuit generates a first clock having a first frequency and a second clock having a second frequency. The conversion amplifier converts an input voltage signal into a current signal. The switch switches between connection and disconnection modes in accordance with the first clock to output the current signal. Each integrator operates in accordance with the second clock and includes two or more switched capacitor circuits and an operational amplifier. The AD conversion circuit converts a signal supplied from the preceding integrator into digital form. The feedback circuit operates in accordance with the second clock.

REFERENCES:
patent: 6202074 (2001-03-01), Lipka
patent: 6504498 (2003-01-01), O'Brien
patent: 6584157 (2003-06-01), Van Der Zwan et al.
patent: 2003/0080888 (2003-05-01), Muhammad et al.
patent: 2004/0218693 (2004-11-01), Hickling
Ville Eerola et al., “Direct Conversion Using Lowpass Sigma-Delta Modulation”, ISCAS, 1992, pp. 2653-2656.
K. Muhammad et al., “A Discrete-Time Bluetooth Receiver in a 0.13um Digital CMOS Process”, ISSCC, 2004, pp. 268-269.
Khurram Muhammad et al., “Digital RF Processing: Toward Low-Cost Reconfigurable Radios”, IEEE Communications Magazine, Aug. 2005, pp. 105-113.
P.P. Vaidyanathan, “Multirate Systems and Filter Banks”, Prentice-Hall PTR.

Affiliated with

Also associated with

Rating

Receiver, receiving method, filter circuit, and control method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Receiver, receiving method, filter circuit, and control method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Receiver, receiving method, filter circuit, and control method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2671250