High bandwidth mean absolute value signal detector with hysteresis and tunability
US6177815A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1999 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Sep 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/1659
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A improved signal detector is provided. The signal detector includes a linear amplifier receiving the input signal and providing an amplified signal. A full-wave rectifier is coupled to the linear amplifier and provides a rectified signal. A low-pass filter is coupled to the full-wave rectifier receiving the rectified signal and providing a comparing signal. A high threshold reference and a low threshold reference respectively is applied to a first comparator and a second comparator, each receiving the comparing signal. The first comparator and the second comparator respectively provide a first compared signal and a second compared signal. A reference path providing the high threshold reference and the low threshold reference includes a linear amplifier, a full-wave rectifier and a low-pass filter providing the high threshold reference. A linear charge pump is connected at its input to the linear amplifier and connected at its output to a low-pass filter to provide the low threshold reference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.