Low offset envelope detector and method of use
US7710197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2007 |
| Grant date | May 4, 2010 |
| Priority date | — |
| Expiry date | Sep 7, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45212
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system for processing a signal is provided. The system includes a differential amplifier receiving a radio-frequency input signal at a first differential input. A rectifying device such as a transistor has a control terminal that is coupled to an output of the differential amplifier and an output that is coupled to a second differential input of the differential amplifier. The second differential input of the differential amplifier receives a low frequency feedback signal from the output of the rectifying device, such as by damping the frequency response at the output of the rectifying device using a capacitor and a current source coupled to the output of the rectifying device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.