Global coupled EM-electrical-thermal simulation and experimental validation for a spatial power combining MMIC array Academic Article uri icon


  • 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.

published proceedings


author list (cited authors)

  • Batty, W., Christoffersen, C. E., Yakovlev, A. B., Whitaker, J. F., Mortazawi, A., Al-Zayed, A., ... Steer, M. B.

citation count

  • 24

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

publication date

  • December 2002