Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Reexamination Certificate
2011-06-28
2011-06-28
Nguyen, Long (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
C327S337000, C327S095000
Reexamination Certificate
active
07969222
ABSTRACT:
Methods and systems for a DC offset correction loop for a mobile digital cellular television environment are disclosed. Aspects of one method may include removing at least a portion of a DC offset from output of an amplifier. The DC offset may be removed from a single stage amplifier, or from each stage of a N stage amplifier, where N may be an integer. The DC offset may be removed by using second differential signals generated from first differential signals, where the second differential signals may be communicated to inputs of the amplifier. The first differential signals may by a first circuit that integrates outputs of the amplifier. The first circuit may perform the integration using a variable corner frequency that may be adjusted by changing a resistance of at least one variable resistor in the first circuit.
REFERENCES:
patent: 5463603 (1995-10-01), Petersen
patent: 5471665 (1995-11-01), Pace et al.
patent: 6509777 (2003-01-01), Razavi et al.
patent: 6670901 (2003-12-01), Brueske et al.
patent: 6940365 (2005-09-01), Kamata et al.
patent: 6992526 (2006-01-01), Cheng
patent: 7092043 (2006-08-01), Vorenkamp et al.
patent: 7113016 (2006-09-01), Hsieh et al.
patent: 7171176 (2007-01-01), Birleson
patent: 7196579 (2007-03-01), Ozawa
patent: 7369660 (2008-05-01), Kahn et al.
patent: 7376409 (2008-05-01), Pan
patent: 2003/0069036 (2003-04-01), Forrester
patent: 2003/0119466 (2003-06-01), Goldman
patent: 2004/0150456 (2004-08-01), Radice et al.
patent: 2005/0110550 (2005-05-01), Shi et al.
patent: 2005/0147192 (2005-07-01), Yamamoto et al.
patent: 2005/0276358 (2005-12-01), Pipilos
patent: 2006/0035619 (2006-02-01), Hallivuori et al.
patent: 2006/0068740 (2006-03-01), Yokoyama
patent: 2006/0132235 (2006-06-01), Ozawa
patent: 2006/0135195 (2006-06-01), Leinonen et al.
patent: 2006/0276149 (2006-12-01), Womac et al.
patent: 2007/0002961 (2007-01-01), Hoctor et al.
patent: 2007/0049224 (2007-03-01), Womac
Antoine, et al., A Direct-Conversion Receiver for DVB-H, IEEE Journal of Solid-State Circuits, vol. 40, No. 12, Dec. 2005, pp. 2536-2546.
Dawkins, et al., A Single-Chip Tuner for DVB-T, IEEE Journal of Solid-State Circuits, vol. 38, No. 8, Aug. 2003, pp. 1307-1317.
Mobile and Portable DVB-T Radio Access Interface Specification, EICTA, European Industry Association, EICTA/TAC/MBRAI-02-16, pp. 1-46.
Koli, “A 2.5 V Temperature Compensated CMOS Logarithmic Amplifier” in Proc. IEEE Custom Integrated Circuits Conf., Santa Clara, CA, May 1997, pp. 79-82.
Magoon, “A Single-Chip Quad-Band (850/90011800/1900 MHz) Direct Conversion GSM/GPRS RF Transceiver With Integrated VCOs and Fractional-N Synthesizer”, IEEE Journal of Solid-State Circuits, vol. 37, Issue 12, Dec. 2002 pp. 1710-1720.
Molnar, “A Single-Chip Quad-Band (850/900/1800/1900 MHZ) Direct-Conversion GSM/GPRS RF Transceiver with Integrated VCOs and Fractional-N Synthesizer”, 2002 IEEE International Solid-State Circuits Conference, 2002. Digest of Technical Papers, ISSCC, vol. 1, Feb. 3-7, 2002 pp. 232-462 vol. 1.
Molnar, “A Single-Chip Quad-Band (850/900/1800/1900 Mhz) Direct-Conversion GSM/GPRS RF Transceiver with Integrated VCOs and Fractional-N Synthesizer”, 2002 IEEE International Solid-State Circuits Conference, 2002. Digest of Technical Papers, ISSCC, vol. 2, Feb. 3-7, 2002 pp. 184-463.
Kim, “System Level Design of Multi-Standard Receiver Using Reconfigurable RF Block,” J. Semicond. Technol.Sci., vol. 4, No. 3, Sep. 2004.
Rogers A Multiband ΔΣ Fractional-N Frequency Synthesizer for a MIMO WLAN Transceiver RFIC, Solid-State Circuits, IEEE Journal of vol. 40, Issue 3, Mar. 2005 pp. 678-689.
Temporiti, “A 700-kHz Bandwidth ΔΣ Fractional Synthesizer with Spurs Compensation and Linearization Techniques for WCDMA Applications,” in IEEE Int. Solid-State Circuits Conf. Dig. Tech. Papers, San Francisco, CA, Feb. 2004, pp. 1446-1454.
Womac, “Global Mobile TV Standard Makes it Possible to Tune in Digital TV Signals on the Move”, Jun. 2005.
Antoine, “A Direct-Conversion Receiver for DVB-H”, ISSCC 2005 IEEE International Solid-State Circuits Conference, 2005, Digest of Technical Papers, Feb. 10-10, 2005 pp. 426-607 vol. 1.
Love, “Single-Chip Tuner Enables Broadcast TV in Both European and North American Handsets”, eeProductCenter (Jun. 6, 2005 6:32 AM ET).
Vassiliou, “A 0.18/spl mu/m CMOS Dual-Band Direct-Conversion DVB-H Receiver”, ISSCC 2006, Digest of Technical Papers, IEEE International Solid-State Circuits Conference, 2006, Feb. 6-9, 2006 pp. 2494-2503.
Patrick Antonine, et al., A Direct-Conversion Receiver For DVB-H, IEEE Journal of Solid-State Circuits, vol. 40, No. 12, Dec. 2005, pp. 2536-2546.
Mark Dawkins, Alison Payne Burdett, Nick Cowley, A Single-Chip Tuner For DVB-T, IEEE Journal of Solid-State Circuits, vol. 38, No. 8, Aug. 2003, pp. 1307-1317.
EICTA—European Industry Association, Information Systems Communication Technologies Consumer Electronics, EICTA/TAC/MBRAI-0216, Mobile and Portable DVB-T Radio Access Interface Specification, Version 1.0, Jan. 1, 2004, pp. 1-46.
Broadcom Corporation
McAndrews Held & Malloy Ltd.
Nguyen Long
LandOfFree
Method and system for DC offset correction loop for a mobile... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for DC offset correction loop for a mobile..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for DC offset correction loop for a mobile... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2703184