Apparatus and method for detecting radio frequency transmission power levels
US7529526B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 15, 2004 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Feb 21, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3042
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for detecting radio frequency transmit power levels produced by a power amplifier of a wireless device is described. In one exemplary apparatus implementation, the apparatus includes a power amplifier, an antenna switch and a power amplifier detector. The power amplifier is configured to amplify a transmit signal at a desired power level. An antenna switch, is located between the power amplifier and an antenna, and is configured to switch the antenna from a receive mode to a transmit mode and vice versa. A power amplifier detector is connected to the antenna switch. The power amplifier detector is configured to receive a leakage signal from the antenna switch as a basis to detect the power level of the transmit signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.