Method for automatic impedance matching and corresponding transmission channel
US9729111B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 2014 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Aug 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/447
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for facilitating the impedance matching of radiofrequency circuits, notably transmission circuits using a power amplifier connected to a load which may include an antenna. A signal is produced for measuring the temperature resulting from the operation of the output amplifier stage, by a temperature sensor positioned in the immediate vicinity of this stage, the measuring signal is used to control a circuit for controlling the variable impedances of a matching network positioned between the amplifier and the load, and values which seek to minimize the sensed temperature are applied to these variable impedances values. An abnormal heating of the amplifier is an indication of an impedance mismatch that must be corrected to restore a minimum temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.