Capture range control mechanism for voltage controlled oscillators
US6882237B2 · kind B2 · utility
44Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2003 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Apr 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/093
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage controlled oscillator generates an output signal whose frequency varies as a first function of a control voltage applied to a control terminal. The voltage controlled oscillator has a wide range of frequency of operation. A gain adjust circuit adjusts the gain of the voltage controlled oscillator such that the first function varies as a second function of the gain. In a preferred embodiment the gain adjust circuit includes a variable impedance that may be external or integrated onto a common chip with the oscillator core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.