Circuit for detecting the impedance of a load
US7821273B2 · kind B2 · utility
11Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2005 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Jan 11, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/22
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention refers to a circuit and a method for detecting the impedance of a load, whereby the circuit and the method can be used by an impedance matching circuit. Impedance matching circuits need a complex algorithm to adjust the impedance accordingly. This algorithm renders the response time to be long. It has been found out that the complexity partially stems from the fact that the phase of the reflection coefficient is not known over the full range of 0° to 360°. A quadrature phase detector is used to provide the full phase information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.