Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2007-01-16
2007-01-16
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
Reexamination Certificate
active
11271440
ABSTRACT:
A dual-mode delta-sigma analog to digital converter system is disclosed that uses a feed forward modulator and includes a low frequency resonator circuit and a high frequency resonator circuit and includes a feed-forward path from the final integrator in the high-frequency resonator circuit to a summer. The digital converter system includes a selection unit for permitting the high frequency resonator circuit and the low frequency resonator circuit to be employed in a first mode of operation. The system also permits the high frequency resonator circuit and the feed-forward path from the final integrator in the high-frequency resonator circuit to the summer to be disabled in a second mode of operation.
REFERENCES:
patent: 5230098 (1993-07-01), Seki
patent: 6005896 (1999-12-01), Maruyama
patent: 6087969 (2000-07-01), Stockstad et al.
patent: 6362762 (2002-03-01), Jensen et al.
patent: 6414615 (2002-07-01), Cheng
patent: 6556159 (2003-04-01), Fei et al.
patent: 6765517 (2004-07-01), Ali
patent: 6822592 (2004-11-01), Gandolfi et al.
patent: 6839012 (2005-01-01), Kawamura
patent: 6911928 (2005-06-01), Orsier et al.
patent: 6943715 (2005-09-01), Radja et al.
patent: 6977546 (2005-12-01), Stapleton
patent: 2004/0036640 (2004-02-01), Kawamura
patent: 0954107 (1999-11-01), None
Burger et al., “A 13.5-mW 185-Msample/s ΔΣ Modulator for UMTS/GSM Dual-Standard IF Reception” Journal of Solid State Circuits, vol. 36, No. 12, Dec. 2001, pp. 1868-1878.
Schimper et al., “A 3mW Continuous-Time ΣΔ-Modulator for EDGE/GSM with High Adjacent Channel Tolerance” Solid States Circuit Conference, 2004.pp. 183-186, no month.
Chaing et al., “Dual-Band Sigma-Delta Modulator for Wideband Receiver Applications” Transactions of Fundamentals Electronics, Communications and Computer Sciences, Engineering Sciences Society, Tokyo Japan, vol. E87-A, No. 2 Feb. 2004, pp. 311-323.
Minnis et al., “A Highly Digitalized Multimode Receiver Architecture for 3G Mobiles” Transactions on Vehicular Technology, vol. 52, No. 3, May 2003 pp. 637-657.
Jantzi et al., “A bandpass Sigma Delta A/D converter for a digital AM receiver” Analog to Digital and Digital to Analog Conversion, 1991, International Conference on Swansea, UK 1991, pp. 75-80, no month.
Veldhoven, “A Triple-Mode Continuous-Time Sigmadelta Modulator with Switched-Capacitor Feedback DAC for a GSM-EDGE/CDMA2000/UMTS Reciever” Journal of Solid State Circuits, vol. 38, No. 12Dec. 2003, pp. 2069-2076.
Salo et al., “80 MHz bandpass delta-sigma modulator using switched-capacitator resonator structure” Electronics Letters, vol. 37, No. 14, Jul. 2001, pp. 877-878.
Burger et al., “A 3V, 208mW CMOS ΔΣ-Modulator for GSM Applications” Swiss Federal Institute of Technology, 1998 Symposium on VLSI Circuits Digest of Technical Pages, pp. 90-91, no month.
T. Burger & Q. Huang, “A 13.5-mW 185-Msample/s ΔΣ Modulator for UMTS/GSM Dual-Standard IF Reception,” IEEE Journal of Solid-State Circuits, vol. 36, No. 12, Dec. 2001, pp. 1868-1878.
Ferguson, Jr. Paul
Gealow Jeffrey
Analog Devices Inc.
Gauthier & Connors LLP
Jean-Pierre Peguy
LandOfFree
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