Amplitude-adjustable oscillator
US6664865B2 · kind B2 · utility
18Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2002 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | May 10, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B5/1234
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Amplitude-adjustable oscillator. The oscillator includes a feedback loop to control the amplitude of an oscillator output signal. The feedback loop includes a pair of clamping transistors, wherein base terminals of the clamping transistors are coupled to an adjustable voltage signal to prevent saturation of the oscillator circuit. The feedback loop also includes a filter to monitor the current flowing through the clamping transistors. The feedback loop also includes an amplifier to compare an output of the clamping transistors to a reference signal, and a reference generator to set an operating bias for the oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.