Mismatch detection using replica circuit
US9178493B1 · kind B1 · utility
41Cited by
4References
49Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 2014 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | May 31, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7236
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus for detecting an operating characteristic mismatch at an output of an amplifier by using a replica circuit is presented. In one exemplary case, a detected voltage difference at the output of the two circuits is used to drive a tuning control loop to minimize an impedance mismatch at the output of the amplifier. In another exemplary case, the replica circuit is used to detect a fault in operation in a corresponding main circuit. A method for detecting a load mismatch in a main RF circuit using the replica circuit is also presented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.