Real-time frequency band selection circuit for use with a voltage controlled oscillator
US7471160B2 · kind B2 · utility
5Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2007 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | May 29, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/099
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated circuit including a phase-locked loop (PLL) circuit responsive to a voltage controlled oscillator (VCO) frequency band selection circuit that provides automatic frequency band selection in real time to account for run-time variations, such as power supply and temperature variations over time. The PLL includes a charge pump and an LC tank circuit that provides the automatic frequency band selection based on a VCO control voltage signal supplied by the charge pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.