TY - GEN
T1 - Multitone measurement system for linearity investigations of microwave devices
AU - Chaudhary, Muhammad Akmal
AU - Memon, Zulfiqar Ali
AU - Lees, Jonathan
AU - Benedikt, Johannes
AU - Tasker, Paul
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/2
Y1 - 2017/7/2
N2 - This paper presents a refined multitone measurement system for the robust characterization of nonlinear microwave devices when subjected to broadband multi-tone stimuli. This refined system has the ability to present specific, constant impedances, not only to the baseband (IF) components, but also to signals located around fundamental (RF) and significant harmonic frequencies. Achieving such comprehensive impedance control across wide modulation bandwidths is important and allows the 'emulation' of new and specific modes of power amplifier operation, and the subsequent waveform characterization of microwave devices operating in such environments. The modified system is demonstrated through a number of applications: firstly the experimental investigation and baseband optimization of a 10W GaN HEMT under nine-tone excitation, and secondly, the emulation of a multitone Class-J impedance environment with optimized baseband impedance environment that interestingly highlights the presence of separate optimum baseband impedance conditions necessary for the reduction of individual Intermodulation (IM) products.
AB - This paper presents a refined multitone measurement system for the robust characterization of nonlinear microwave devices when subjected to broadband multi-tone stimuli. This refined system has the ability to present specific, constant impedances, not only to the baseband (IF) components, but also to signals located around fundamental (RF) and significant harmonic frequencies. Achieving such comprehensive impedance control across wide modulation bandwidths is important and allows the 'emulation' of new and specific modes of power amplifier operation, and the subsequent waveform characterization of microwave devices operating in such environments. The modified system is demonstrated through a number of applications: firstly the experimental investigation and baseband optimization of a 10W GaN HEMT under nine-tone excitation, and secondly, the emulation of a multitone Class-J impedance environment with optimized baseband impedance environment that interestingly highlights the presence of separate optimum baseband impedance conditions necessary for the reduction of individual Intermodulation (IM) products.
UR - https://www.scopus.com/pages/publications/85050623678
U2 - 10.1109/INMIC.2017.8289455
DO - 10.1109/INMIC.2017.8289455
M3 - Conference contribution
AN - SCOPUS:85050623678
T3 - Proceedings of 2017 International Multi-Topic Conference, INMIC 2017
SP - 1
EP - 4
BT - Proceedings of 2017 International Multi-Topic Conference, INMIC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 20th International Multi-Topic Conference, INMIC 2017
Y2 - 24 November 2017 through 26 November 2017
ER -