The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2011
Filed:
Jul. 01, 2010
Sukhjinder Deo, Tewksbury, MA (US);
Barrie Gilbert, Portland, OR (US);
John Cowles, Beaverton, OR (US);
Sukhjinder Deo, Tewksbury, MA (US);
Barrie Gilbert, Portland, OR (US);
John Cowles, Beaverton, OR (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A peak-to-average measurement system includes an envelope detector to extract the modulation envelope of an input signal having a modulated carrier. The resulting baseband envelope signal is applied to a peak detector and an averaging circuit. In one embodiment, the averaging circuit includes a translinear core to generate a squared signal in response to the envelope signal and an RMS-average circuit to perform the averaging portion of an RMS function. The translinear core may also generate a replicated version of the envelope signal for the peak detector. The use of a common envelope detector for both the peak detector and averaging circuit may provide improved scaling accuracy.