Digital polar transmitter, method for improving a digital polar transmitter, and corresponding computer program
J. Nguyen, P. Wambacq, and A. Cooman.
EP 23211896.8, Dec. 2024
A digital polar transmitter with improved transmission behavior is provided. The digital polar transmitter comprises a first modulating unit with a first variable gain being controllable with the aid of a first phase-referred signal, a second modulating unit with a second variable gain being controllable with the aid of second phase-referred signal, a third modulating unit, especially an amplitude modulating unit, with a third variable gain being controllable with the aid of an amplitude-referred signal, and an adding unit for forming the sum of an output of the first modulating unit and an output of the second modulating unit and providing the sum at an adding unit output. In this context, the first phase-referred signal and the second phase-referred signal are synchronized. In addition to this, the amplitude-referred signal is synchronized with respect to the first phase-referred signal and/or the second phase-referred signal.