Full wave, self-detecting differential logarithmic rf amplifier
US4716316A · kind A · utility
6Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 20, 1987 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | May 20, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G11/002
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A logarithmic rf amplifier includes a plurality of cascaded stages each including a differential amplifier which performs full-wave rectification of the rf signal and a circuit for providing a video signal representative of the full-wave rectified rf signal. The logarithmic amplifier further includes a circuit for supplying rf signals of equal amplitude and opposite polarity to the inputs of the first differential amplifier stage and a circuit for summing the video signals from each of the stages and providing a logarithmic video output. The amplifier exhibits extremely fast pulse response and clean limiting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.