@inproceedings{69c9b6c320564ebf8bca7eb100d80a4d,
title = "Characterization of electrical memory effects for complex multi-tone excitations using broadband active baseband load-pull",
abstract = "This paper focuses on multi-tone characterization of baseband (IF) electrical memory effects and their reduction through the application of complex-signal, active baseband load-pull. This system has been implemented to allow the precise evaluation of intrinsic nonlinearity in high-power microwave devices for wideband applications. The developed active baseband load-pull capability allows a constant, frequency independent baseband load environment to be presented across wide modulation bandwidths, and this capability is important in allowing the effects of baseband impedance variation on the performance of nonlinear microwave devices, when driven by broadband multi-tone stimuli, to be fully understood. The experimental investigations were carried out using a 10 W GaN HEMT device, under 9-carrier complex modulated excitation. These confirmed that presenting a wideband baseband short circuit was essential for maximum ACPR suppression together with the minimization of ACPR asymmetry, confirming the importance of proper termination of baseband frequency components when designing DC bias networks.",
keywords = "Active load-pull, adjacent channel power ratio, baseband, memory effects, power amplifiers",
author = "M. Akmal and Ogboi, \{F. L.\} and Z. Yusoff and J. Lees and V. Carrubba and H. Choi and S. Bensmida and K. Morris and M. Beach and J. McGeehan and J. Benedikt and Tasker, \{P. J.\}",
year = "2012",
language = "English",
isbn = "9782874870286",
series = "European Microwave Week 2012: {"}Space for Microwaves{"}, EuMW 2012, Conference Proceedings - 7th European Microwave Integrated Circuits Conference, EuMIC 2012",
pages = "885--888",
booktitle = "European Microwave Week 2012",
note = "7th European Microwave Integrated Circuits Conference, EuMIC 2012 - Held as Part of 15th European Microwave Week, EuMW 2012 ; Conference date: 29-10-2012 Through 30-10-2012",
}