Voltage controlled oscillator
US7583154B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Sep 1, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/099
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage-controlled oscillator is provided that avoids use of any crystal resonator, or any resonator that is external to and not integrated upon the voltage-controlled oscillator monolithic substrate. The present oscillator can receive two or more parameters that would likely have an affect on the oscillator frequency, yet the oscillator includes compensating transfer functions that will remove, or correct for, that effect. Transfer functions involve electronic subsystems implemented in hardware or software that receive the input parameter that has changed from a nominal value, and will note the drift in output frequency, yet will compensate for that drift so that the output frequency remains near the nominal value. The voltage-controlled oscillator preferably is an LCVCO, and the transfer function outputs can be summed to take into account multiple parameter changes. In addition, the output frequency can be placed into a wider band spread spectrum output using a modulating, spread spectrum circuitry if desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.