Low phase noise recursive direct digital synthesis with...

Pulse or digital communications – Receivers – Automatic gain control

Reexamination Certificate

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Details

C455S076000, C455S245100, C327S105000, C708S271000

Reexamination Certificate

active

07929651

ABSTRACT:
Disclosed is a recursive, direct digital synthesizer includes an accumulator module and a Coordinate Rotation Digital Computer (CORDIC) module coupled to the accumulator module. The CORDIC module rotates a signal according to a desired rotation angle specified by the accumulator module. An automatic gain control module is coupled to the CORDIC module. The automatic gain control module can apply a level of gain to the rotated signal.

REFERENCES:
patent: 5737253 (1998-04-01), Madisetti et al.
patent: 6347325 (2002-02-01), Ribner et al.
patent: 6693970 (2004-02-01), Vankka
patent: 6999537 (2006-02-01), Shippee
patent: 7020190 (2006-03-01), Sullivan
patent: 7327783 (2008-02-01), Sullivan
patent: 2004/0082302 (2004-04-01), Shippee
patent: 2005/0176394 (2005-08-01), Inogai
patent: 2006/0282489 (2006-12-01), Khan et al.
patent: 2008/0013654 (2008-01-01), Rick et al.
Harris, Frederic J. et al. “Ultra Low Phase Noise DDS”, Nov. 13, 2007, 6 pages, available from Xilinx, Inc., 2100 Logic Drive, San Jose, CA 95124.
Dick, Chris et al., “Synchronization in Software Defined Radios—Carrier and Timing Recovery Using FPGAs,”Proc. of the IEEE Symposium on Field-Programmable Custom Computing Machines, Apr. 16, 2000, pp. 195-204, IEEE Computer Society, Washington, DC, USA.
Harris, Fred et al., “Error Feedback Loop Linearizes Direct Digital Synthesizers ”Proc. of the 29thAsilomar Conference on Signals, Systems and Computers, Oct. 30, 1995, pp. 98-102, IEEE Computer Society, Washington, DC, USA.
Harris, Fred, “A Novel Approach to the Designs of Optimal Second Order Digital Filters,”Proc. of Southcon-82, Mar. 1982, pp. 1-7.
Mitra, Sanjit K.,Digital Signal Processing, Second Edition, 2001, Chapter 8, pp. 515-582, McGraw Hill, New York, New York, USA.
Valls, J. et al., “The Use of CORDIC in Software Defined Radios: A Tutorial,”IEEE Communications Magazine, Sep. 2006, pp. 46-50, vol. 44, No. 9, IEEE Communications Society, New York, New York, USA.

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