Tune range limiter
US7863996B2 · kind B2 · utility
48Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2008 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Jun 24, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/40
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An impedance matching network includes a first input port that receives radio frequency (RF) power and includes an input impedance, an output port that provides the RF power and includes an output impedance, and a variable capacitance module that varies the output impedance. The variable capacitance module includes a first variable capacitor, a second variable capacitor, a first motor, and a second motor that adjusts a capacitance of the second variable capacitor. A relationship between a desired value of the capacitance and an actual value of the capacitance is dependent on a capacitance of the first variable capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.