Low-power, self-quenching superregenerative detector
US5751197A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1996 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Jun 18, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D11/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A low-power, self-quenching superregenerative receiver utilizes a single-port SAW device coupled to an RF oscillator to establish the frequency of oscillation at the output of the RF oscillator. A diode detector is coupled from the oscillator output for detecting a predetermined amplitude of the oscillation output signal. A time-constant circuit is coupled from the signal detector for generating an oscillator quench signal when the oscillator signal is detected and the oscillator quench signal has a predetermined duration set by the time-constant circuit. A feedback circuit couples the oscillator quench signal to the RF oscillator to cause the RF oscillator to switch to a non-oscillating condition only during the predetermined duration of the RF oscillator quench signal. The RF oscillator then switches to the oscillating condition and the system repeats itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.