Digital calibration for capacitor voltage non-linearity
US6891414B1 · kind B1 · utility
9Cited by
14References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2004 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Jun 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention provides a system for adjusting a selectable capacitance of a variable capacitance array to compensate for voltage non-linearity of the variable capacitance array. In general, the system includes the variable capacitance array and a calibration circuit. The calibration circuit operates to determine a voltage across the variable capacitance array and to generate a capacitance selection signal based on the voltage across the variable capacitance array and a known capacitance versus voltage characteristic of the variable capacitance array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.