F. Hühn, A. Wentzel, W. Heinrich

Published in:

Proc. 46th European Microwave Conf. (EuMC 2016), London, UK, Oct. 4-6, pp. 839-842 (2016).

Abstract:

This work presents for the first time a wave-table based coding scheme to generate a high speed binary input signal for digital RF power amplifiers. The approach maximizes the utilization of the time domain handling capabilities of the pulse forming circuit. Key features are a greatly improved output spectrum purity in comparison to common digital modulators, the ability to adjust the modulator to any given pulse forming hardware and a built-in signal correction option that comes without additional computational cost. The proposed concept is emulated with an arbitrary waveform generator and shows for a 5 MHz WCDMA signal (6.5 dB PAPR) at 900 MHz an EVM of 0.9% and better than >55 dB ACLR. To the authors’ knowledge these are the best values achieved for a single-bit coding scheme without digital predistortion (DPD) reported so far that still maintains maximum power coding efficiency.

Copyright © 2016 EuMA. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the EuMA.

Full version in pdf-format.