Peak detector with active ripple suppression
US7834692B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2007 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Sep 12, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/1532
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A peak detector circuit that responds rapidly to power transients, and yet is able to avoid interpreting data fluctuations as power transients by generating dual peak signals from an amplifier's differential output signal, where the dual peak signals have data ripple components that tend to cancel one another. The system and methods permit the peak detectors to be much more responsive to power transients by expanding their bandwidth (shortening the time constants) to the point that low frequency data components affect the individual peak detector signals, but the effects are cancelled out when the individual components are added together. The peak detector described herein may be used in an AGC system to provide ripple-free gain control signals, while rapidly following any power transients in transmitted signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.