Amplifying unit, power amplifier and transmitter
US8456239B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2012 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Jun 1, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/511
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier, which includes n+1 amplifying units coupled in parallel, where n is an integer greater than or equal to 0, third input ends VR(i) of the n+1 amplifying units are coupled to a power input VL, output ends D(i) of the n+1 amplifying units are coupled to a power input VH, and an output power of the power amplifier is in an increasing function relationship with a capacitance value obtained through accumulation of energy returning capacitors xC of the n+1 amplifying units. The power amplifier changes circuit impedance in a manner of controlling the parallel capacitance value by a switching digital signal, thereby controlling a magnitude of a returned power value and forming different output powers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.