Peak-to-average measurement with envelope pre-detection

Details Peak-to-average measurement with envelope pre-detection Peak-to-average measurement with envelope pre-detection

2010-07-01

2011-12-06

Valone, Thomas (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

Reexamination Certificate

active

08072205

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.

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