Global coupled EM-electrical-thermal simulation and experimental validation for a spatial power combining MMIC array
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A unique electromagnetic (EM)-electrothermal global simulation tool based on a universal error concept is presented. The advantages of this electrothermal model are illustrated by comparison with a commercial electrothermal circuit simulator. The first description of a fully physical, electrothermal, microwave circuit simulation, based on coupling of the Leeds Physical Model of MESFETs and high electron-mobility transistors, to a microwave circuit simulator, fREEDA (NCSU), is presented. The modeling effort is supported by parallel developments in electrooptic and thermal measurement. The first fully coupled EM-electrothermal global simulation of a large microwave subsystem, here a whole spatial power combining monolithic-microwave integrated-circuit (MMIC) array, is described. The simulation is partially validated by measurements of MMIC array temperature rise and temperature dependent S-parameters. Electrothermal issues for spatial power combiner operation and modeling are discussed. The computer-aided-design tools and experimental characterization described, provide a unique capability for the design of quasi-optical systems and for the exploration of the fundamental physics of spatial power combining devices.
IEEE Transactions on Microwave Theory and Techniques
author list (cited authors)
Batty, W., Christoffersen, C. E., Yakovlev, A. B., Whitaker, J. F., Mortazawi, A., Al-Zayed, A., ... Steer, M. B.
complete list of authors
Batty, W||Christoffersen, CE||Yakovlev, AB||Whitaker, JF||Mortazawi, A||Al-Zayed, A||Ozkar, M||Ortiz, SC||Reano, RM||Yang, K||Katehi, LPB||Snowden, CM||Steer, MB