Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2007-12-11
2007-12-11
Mai, Lam T. (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
C341S144000
Reexamination Certificate
active
10973741
ABSTRACT:
A distributed resonator or filter in a continuous-time delta-sigma modulator is disclosed, where the transfer function of the resonator or filter repeats every FS, where FSis the sampling frequency of the modulator. On one side, like continuous-time delta-sigma modulators, the disclosed modulator does not require a high-precision track-and-hold, and additionally can take advantage of the high Q of distributed resonators. On the other side, like discrete-time delta-sigma modulators, the disclosed modulator is insensitive to feedback loop delays and can subsample.
REFERENCES:
patent: 5039989 (1991-08-01), Welland et al.
patent: 5311181 (1994-05-01), Ferguson et al.
patent: 5608400 (1997-03-01), Pellon
patent: 5673044 (1997-09-01), Pellon
patent: 5729230 (1998-03-01), Jensen et al.
patent: 6020836 (2000-02-01), Tlaskal
patent: 6292121 (2001-09-01), Cake et al.
patent: 6362762 (2002-03-01), Jensen et al.
patent: 6396428 (2002-05-01), Cheng
patent: 6437718 (2002-08-01), Oyama et al.
patent: 6462687 (2002-10-01), Eshraghi et al.
patent: 6608581 (2003-08-01), Semenov
patent: 6816103 (2004-11-01), Jonsson et al.
patent: 6880262 (2005-04-01), Jensen
patent: 6897796 (2005-05-01), Dias et al.
patent: 7057541 (2006-06-01), Kaplan
patent: 2004/0239541 (2004-12-01), Xu
patent: 1 418 674 (2004-05-01), None
Chao, K.C.-H, et al., “A Higher Order Topology for Interpolative Modulators for Oversampling A/D Converters,”IEEE Transactions on Circuits and Systems, vol. 37, No. 3, pp. 309-318 (Mar. 1990).
Kuhn, W.B., et al., “Dynamic Range of High-Q OTA-C and Enhanced-Q LC RF Bandpass Filters,”Proceedings of the 37th Midwest Symposium on Circuits and Systems, vol. 2, pp. 767-771 (1995), “no month”.
Hernández, L., et al., “A Jitter Insensitive Continuous-Time σΔ Modulator Using Transmission Lines,”Proceedings of the 11th International Conference on Electronics, Circuits, and Systems, pp. 109-112 (2004), “no month”.
Hernández, L., “Continuous-Time Sigma-Delta Modulators With Reduced Timing Jitter Sensitivity Based on Time Delays,”Electronics Letters, vol. 39, No. 14, pp. 1039-1041 (Jul. 10, 2003).
Hernández, L., et al., “Sixth-Order Programmable Bandwidth Bandpass Sigma-Delta Modulator Implemented With Transmission Lines,”Electronics Letters, vol. 40, No. 25, pp. 1575-1576 (Dec. 9, 2004).
Pozar, D.,Microwave Engineering, Addison-Wessley, Massachusetts, pp. 336-343 (1990), “no month”.
Pozar, D.,Microwave Engineering, Second Edition, John Wiley & Sons, Inc., New York, pp. 206-213 (1998), “no month”.
Raghavan, G., et al., “Architecture, Design, and Test of Continuous-Time Tunable Intermediate-Frequency Bandpass Delta-Sigma Modulators,”IEEE Journal of Solid-State Circuits, vol. 36, No. 1, pp. 5-13 (Jan. 2001).
van Engelen, J., et al.,Bandpass Sigma Delta Modulators: Stability Analysis, Performance and Design Aspects, Kluwer Academic Publishers, Boston, pp. 107-119 (1999), “no month”.
HRL Laboratories LLC
Ladas & Parry
Mai Lam T.
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