Systems and methods for controlling output power in a communication device
US6710651B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Oct 22, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/103
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless communication device comprises a power amplifier configured to amplify a power level of a transmit signal to a required transmit power level and a transmission line coupled with the power amplifier. The transmission line is configured to convey the amplified transmit signal. The wireless communication device also comprises a power control circuit that includes a bi-directional coupler detector coupled with the transmission line. The bi-directional coupler detector is configured to sense a forward power level and a reflected power level in the transmission line. The power control circuit may be configured to adjust the required transmit power level based at least in part on the forward and reflected power levels sensed by the bi-directional coupler detector. The power control circuit may also adjust an impedance of an impedance matching circuit based at least in part on the reflected power level sensed by the bi-directional coupler detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.