Power amplifier saturation detection and operation at maximum power
US7078966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Jan 8, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3047
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Power amplifier apparatus comprising a power amplifier (1) having a signal output, and a power control feedback loop (3, 4, 5) for controlling the output signal power relative to a first power target signal (8). A saturation control loop (6, 7) is responsive to a parameter indicative of saturation of the power amplifier (1) for adjusting the output signal power to a level at which the power amplifier means is substantially not saturated. A power target variation module (11, 15, 16) operable when the first power target signal (8) is at or close to a value corresponding to saturation of the power amplifier means (1) applies to the power control loop (3 to 7) a modified power target signal (17) corresponding to a power target higher than the first power target signal (8) and at which the power amplifier means (1) saturates. The modified power target signal (17) causes the saturation control loop (6, 7) to react to saturation of the power amplifier means (1) adjusting the output signal power to a level at which the power amplifier means (1) operates substantially at its maximum power but not saturated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.