System and method for reducing temperature-dependent and process-dependent frequency variation of a crystal oscillator circuit
US8433255B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 2011 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Jul 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L1/028
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In embodiments of the present disclosure, a method may include determining an ambient temperature of an oscillator. The method may also include estimating an approximate frequency of operation of the oscillator. The method may additional include determining a process-based compensation to be applied to a resonator of the oscillator based on the approximate frequency. The method may further include setting a capacitance of a variable capacitor coupled to the resonator in order to compensate for temperature-dependent and process-dependent frequency variation of the oscillator based on the ambient temperature and the process-based compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.