Dynamic bias modulator with multiple output voltage converter and power amplification apparatus using the same
US9667204B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2016 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | May 3, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/555
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplification apparatus includes a multiple output bias voltage generation unit, a dynamic bias modulator, and a power amplifier. The multiple output bias voltage generation unit generates first and second bias voltages using an inductor coupled between an input voltage and a plurality of capacitors. The capacitors are connected to the inductor in a non-overlapping manner. The dynamic bias modulator outputs the first bias voltage or the second bias voltage as a variable bias voltage based on results of comparing voltage of an envelope signal of a radio frequency (RF) signal to an envelope reference voltage. The power amplifier is biased in response to the variable bias voltage, amplifies power of the RF signal, and outputs the amplified RF signal to an antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.