Digital transmitter based on a cascaded phase pulse positions- and pulse width modulation.

摘要

An apparatus which comprises the following:a frequency synthesizer (210) for generating a local oscillator signal;a first and a second phase modulator (212, 214), which are coupled in a cascaded arrangement, for modulating the local oscillator signal with control signals, which are derived from quadrature baseband data, which are intended to be sent, wherein the first and second phase modulator (212, 214) is capable of; and phase-modulated signals.a combiner (216) for combining the phase-modulated signals into a pulse positions- and pulse width modulated signal, which is intended to be transmitted.