Transmitter power control loop for high-speed wireless LANs
US7355477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2006 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Sep 29, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3042
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low cost, robust method and apparatus for controlling the gain of a power amplifier to compensate for changes that are gradual with time. The bias circuit of a power amplifier is sent one of three signals in response to a measurement of the average output power level of the power amplifier. If the average output power lever is less than a desired value, a signal to increment the bias current by a set amount is sent, so that the output power increases. If the average output power lever is more than the desired value, a signal to decrement the bias current by a set amount is sent. A third signal may be sent that causes the bias circuit to reset to a default value. The three signals may be sent as a two bit digital signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.