Low power radio frequency envelope detector
US9601995B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2016 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | May 3, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K9/02
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low power radio frequency envelope detector includes a charging transistor for controlling the charge supplied to an output capacitor. A first input capacitor couples an input signal to a gate of the charging transistor. A second input capacitor couples a first polarity of the input signal to a first diode such that the first diode is operable to couple charge to the first input capacitor and to the gate of the charging transistor in response to a positive excursion of the first polarity of the input signal. A third input capacitor couples a second polarity of the input signal to a second diode coupled in series with the first diode. The first and second diodes are operable to couple charge to the first input capacitor and to the gate of the charging transistor in response to a positive excursion of the first polarity of the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.