Patent · US Active

Peak-to-average measurement with envelope pre-detection

US8072205B1 · kind B1 · utility

6Cited by

16References

3Claims

0Family size

Assignee

Analog Devices, Inc. · US

Inventors

Sukhjinder S. Deo · Wilsonville, US
Barrie Gilbert · Portland, US
John Cowles · Bensalem, US

Key dates

Filing date	Jul 1, 2010
Grant date	Dec 6, 2011
Priority date	—
Expiry date	Jul 1, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG06F2218/14
WIPO fieldMeasurement
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.