Zeitschriftenartikel:
N. Leder, B. Pichler, T. Faseth, H. Ruotsalainen, H. Arthaber:
"Hierarchical-Table-Based Model for All-Digital RF Transmitters";
IEEE Transactions on Microwave Theory and Techniques,
Vol. 65
(2017),
No. 3;
S. 720
- 728.
Kurzfassung englisch:
Transmitters based on nonlinear radiofrequency (RF) modulators and switched-mode power amplifiers are systems that, at least theoretically, can provide high linearity and energy-efficient generation of RF signals at the same time.However, the nonlinear memory-affected behavior remains an issue hindering practical applications. This paper shows that it is possible to model the nonlinear memory of such circuits based on time-domain observations and how to use this information in computationally efficient time-domain RF circuit models. In contrast to other works, this model covers the full bandwidth of the active device (dc-10 GHz) and it uses hierarchical data structuring to adaptively find a compact model without prior knowledge of the circuit´s memory depth. The data for this work were gained from a laboratory setup, designed to be used
as an LTE transmitter for a signal bandwidth of 20 MHz at a
fixed center frequency of 2.5 GHz.
Schlagworte:
Active device modeling, all-digital RF transmitter (DRFTx), design of microwave devices and circuits, digital circuis at gigahertz speeds, microwave amplifiers, nonlinear device modeling, nonlinear effects of modulated power amplifiers (PAs)
"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1109/TMTT.2016.2630068
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.