Power control of reconfigurable outphasing chireix amplifiers and methods
US8174322B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2011 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Mar 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/0294
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Various embodiments relate to a reconfigurable integrated digital Chireix out-phasing power amplifier for use in high power base stations is described and a related method of said design. The power amplifier may include a power transistor circuitry having plurality of power transistors and shunt-series circuitry (L1C1, L2C2), a broadband combiner having Chireix compensation elements, and an impedance matching filter. In one embodiment, the power amplifier is implemented in a real switch-mode to facilitate integration of the Chireix compensation elements so as to make the Chireix power amplifier tunable. A method of driving Chireix power amplifier structure is also described. In some embodiments, a variable supply voltage may power the transistor circuitry based on the desired output power of the Chireix power amplifier. In some embodiments, the variable supply voltage may depend upon an out-phasing angle between the two drivers in the transistor circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.