Analog to digital converter with ping-pong architecture

Details Analog to digital converter with ping-pong architecture Analog to digital converter with ping-pong architecture

2007-10-02

2007-10-02

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

Reexamination Certificate

active

11390991

ABSTRACT:
The invention provides a receiver for use in a wireless communication system that substantially reduces mismatch between an in-phase (I) component and a quadrature (Q) component of a received signal. The receiver achieves this by sharing or “ping-ponging” an analog-to-digital converter (ADC) between the I and Q components. By sharing a single pipelined ADC between the I and Q components, both the I and Q components are processed by the same circuitry inside the pipelined ADC thereby eliminating many dominant sources of I-Q mismatch. The pipelined ADC operates at approximately twice the speed as other circuit components. Consequently, I-Q mismatch, which negatively affects performance, may be substantially reduced. At the same time, system complexity, cost, and power dissipation are reduced by eliminating an additional ADC typically used to process the I and Q components in parallel signal paths.

REFERENCES:
patent: 6785529 (2004-08-01), Ciccarelli et al.
patent: 6943720 (2005-09-01), Nakamori et al.
patent: 7088278 (2006-08-01), Kurose et al.
patent: 7139332 (2006-11-01), Yu et al.
patent: 2003/0206603 (2003-11-01), Husted
patent: 1388942 (2006-11-01), None
patent: WO 02/082673 (2002-10-01), None
patent: WO 03/001682 (2003-01-01), None
Behzad Razavi, “RF Microelectronics,” Chapters 3, 4 and 5 (pp. 54-165) 1998.
Declaration Under 37 C.F.R. 1.132 of Salman Mazhar, dated Nov. 22, 2006, 2 pages.
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration for corresponding PCT Appl. No. PCT/US2006/024888, dated Nov. 28, 2006 (11 pgs.).
International Preliminary Examination Report from corresponding PCT Application Serial No. PCT/US2006/024888 mailed Jun. 15, 2007 (15 pages).

Affiliated with

Also associated with

Rating

Analog to digital converter with ping-pong architecture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Analog to digital converter with ping-pong architecture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analog to digital converter with ping-pong architecture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3866892