POWER-AMPLIFIER ARRANGEMENT

摘要

A power-amplifier arrangement (35) is disclosed. The power-amplifier arrangement (35) comprises a pulse modulator (40) adapted to receive a digital input signal of the power-amplifier arrangement (35) and generate, based on the digital input signal of the power-amplifier arrangement (35), an output signal of the pulse modulator (40) with a plurality of quantization levels. The pulse modulator has a plurality of output ports (50-1-50_n) for representing the output signal of the pulse modulator (40). Each output port (50-1-50_n) of the pulse modulator (40) is associated with a unique one of the quantization levels such that a signal output on the output port (50-1-50_n) adopts a first state when the output signal of the pulse modulator (40) equals or exceeds the associated quantization level, or, otherwise, a second state. A related radio-transmitter circuit and a related radio-communication apparatus are also disclosed.