High efficiency linear amplifier employing dynamically controlled back off
US7339426B2 · kind B2 · utility
14Cited by
29References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2005 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Apr 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G2201/307
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high efficiency radio frequency (RF) power amplifier having dynamically controlled back off is disclosed. The RF input voltage is sampled by an adaptive analog signal processing circuit. The adaptive analog signal processing circuit controls the supply voltage to RF amplifier devices, such as LDMOS devices, which varies the efficiency or back off of the power amplifier. The variable supply voltage in turn varies peak power of the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.