Selective power amplifier

摘要

A transmitter comprising a power amplifier, a phase modulator, a switched DC-DC converter, all operating in dual mode, and a controller is disclosed. The power amplifier is arranged to selectively operate either in a first mode or in a second mode, wherein the first mode is a linear mode and the second mode is a non-linear mode in order to save power with least increasing cost in hardware. The transmitter is adapted to operate at different allocated bandwidths, for different radio standards while keeping minimum power consumption governed by the controller. A transceiver, a communication device, a method and a computer program are also disclosed.

主权项

1. A transmitter comprising:
a power amplifier; a switch mode voltage converter of direct current-to-direct current type arranged to provide power supply to the power amplifier; and a controller; wherein the power amplifier is arranged to selectively operate in either a first mode or in a second mode, wherein the first mode is a linear mode and the second mode is a non-linear mode; and wherein the controller is arranged to, when operating in a radio access technology, RAT, that allows different allocated bandwidths to be utilized, determine an allocated signal bandwidth for a transmission to be made by the transmitter in the RAT, said controller comprising a control mechanism arranged to control the power amplifier to select one of the transmission modes for the transmission based on the determination.