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This paper proposes a time-domain test bench for the pulsed characterization of a high Power GaN Amplifier. Our findings are based on a Track and Hold Amplifier for the down-conversion of RF spectra using the sub harmonic sampling principle. The use of wideband THA to replace samplers or mixers enables reducing component density in an analog domain. It permits direct digitization of entire pulsed...
In this paper, two different models for the baseband digital predistortion of a GaN power amplifier have been applied: the widely-used Memory Polynomial (MP) model and the recently proposed Behavioral Model with Dynamic Deviation Reduction for Wideband Amplifiers (DVBW). Their performance has been experimentally compared in terms of Adjacent Channel Power Ratio, Error Vector Magnitude and Power Added...
This paper presents a time domain envelope measurement system that enables the study and the optimization of high efficiency and linear power amplifiers by applying both envelope tracking and digital base band predistorsion techniques. A man focus of this paper is the description of the set up architecture along with its capability to achieve in depth investigations on the dynamic behavior of envelope...
this paper presents a time domain envelope measurement system that enables the study and the optimization of high efficiency and linear power amplifiers by applying both envelope tracking and digital base band predisrtorsion techinques. A main focus of this paper is the description of the set up architecture along with its capability to achieve in depth investigations on the dynamic behavior of envelope...
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