RMS detector with automatic gain control

Details RMS detector with automatic gain control RMS detector with automatic gain control

2011-08-09

2011-08-09

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Exponential

C327S346000

Reexamination Certificate

active

07994840

ABSTRACT:
Embodiments of the present invention provide systems, devices and methods for detecting the RMS value of a signal. The RMS detector uses multiple variable-gain stages and internal gain control to generate an RMS output signal based on an arbitrary signal input. This RMS detector significantly reduces the signal swings seen on a squarer within prior art RMS detectors and reduces the detector's dependency on DC offsets at low signal levels and overload errors at high signal levels. The embodiments of the present invention also improve the accuracy of the RMS detector within large dynamic signal ranges by obviating the operation of a squarer in saturation or out of the squaring region. Accordingly, embodiments of the present invention are able to more accurately detect RMS values on a signal, operate over relatively higher signal ranges, and better function within different signal modulation schemes, particularly those with large peak-to-average ratios.

REFERENCES:
patent: 3807816 (1974-04-01), Hamburg
patent: 5659582 (1997-08-01), Kojima et al.
patent: 6172549 (2001-01-01), Gilbert
patent: 6185482 (2001-02-01), Egolf
patent: 6204719 (2001-03-01), Gilbert
patent: 6243652 (2001-06-01), Fawcett
patent: 6348829 (2002-02-01), Gilbert
patent: 6411072 (2002-06-01), Feldman
patent: 6429720 (2002-08-01), Gilbert
patent: 6501329 (2002-12-01), Petrofsky
patent: 6516279 (2003-02-01), Jansen
patent: 6525601 (2003-02-01), Gilbert
patent: 6548999 (2003-04-01), Wong
patent: 6549057 (2003-04-01), Gilbert
patent: 6556084 (2003-04-01), Sowlati
patent: 6651036 (2003-11-01), Petrofsky
patent: 6696888 (2004-02-01), Gilbert
patent: 6777999 (2004-08-01), Kanou et al.
patent: 6801075 (2004-10-01), Gammie
patent: 6819090 (2004-11-01), Kachline
patent: 6861890 (2005-03-01), Gilbert
patent: 7002394 (2006-02-01), Gilbert
patent: 7030567 (2006-04-01), Ballenger
patent: 7034473 (2006-04-01), Ballenger
patent: 7106604 (2006-09-01), Nash
patent: 7187160 (2007-03-01), Higgins
patent: 7197292 (2007-03-01), Kouwenhoven
patent: 2004/0223349 (2004-11-01), Nash
patent: 2006/0256593 (2006-11-01), Pierson
patent: 2317514 (1998-03-01), None
patent: 2004075401 (2004-09-01), None
Search Report and Written Opinion for PCT/US2009/042750, Jan. 8, 2010, European Patent Office as ISA, 18 pages.

Affiliated with

Also associated with

Rating

RMS detector with automatic gain control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with RMS detector with automatic gain control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and RMS detector with automatic gain control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2784496