Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2008-02-29
2009-06-16
Young, Brian (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
C341S144000
Reexamination Certificate
active
07548180
ABSTRACT:
Aspects of a method and system for digital to analog conversion for power amplifier driver amplitude modulation are presented. Various aspects of the system may include circuitry that enables oversampling, within a single integrated circuit device, of each of a plurality of samples in a digital baseband signal. The circuitry may enable reduction of a number of bits, i.e., coarse quantization, in each of the oversampled plurality of samples so as to cause displacement of the quantization noise that occurred as a result of the coarse quantization. A subsequent signal may be generated based on the oversampled signal. The circuitry may enable the subsequent signal to be low-pass filtered utilizing filter circuitry in the single integrated circuit device, thereby attenuating the quantization noise displaced into the higher frequency range of the oversampled signal.
REFERENCES:
patent: 5245345 (1993-09-01), Kohdaka et al.
patent: 5784017 (1998-07-01), Craven
patent: 6563448 (2003-05-01), Fontaine
patent: 7283075 (2007-10-01), Lu et al.
patent: 7362251 (2008-04-01), Jensen et al.
patent: 2006/0119493 (2006-06-01), Tal et al.
patent: 2007/0018718 (2007-01-01), Horng et al.
patent: 1235403 (2002-08-01), None
patent: 249874 (2006-02-01), None
Jau J K et al: Polar Modulation-based RF Power Amplifiers with Enhanced Envelope Processing Technique; Microwave Conference, 2004; 34th European; Amsterdam, The Netherlands; Oct. 13, 2004, Piscataway, NJ, IEEE; pp. 1317-1320; XP010788343.
Yves Geerts, Michel Steyaert; Design of Multi-bit Delta-Sigma A/D Converters; Jan. 1, 2002; Kluwer, Netherlands, XP002449461.
Nosworthy et al; Delta-Sigma Data Converters, Theory, Design and Simulation, Section 8.3.3; pp. 251-264; 1997; XP002082100.
Mucahit Kozak, Izzet Kale: Oversampled Delta-Sigma Modulators; Jan. 1, 2003; Kluwer, Netherlands; XP002449462.
Jensen Henrik
Zolfaghari Alireza
Broadcom Corporation
McAndrews Held & Malloy Ltd.
Young Brian
LandOfFree
Method and system for digital to analog conversion for power... 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 digital to analog conversion for power..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for digital to analog conversion for power... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4145212