Imperial College London

Professor Stepan Lucyszyn, FIEEE

Faculty of EngineeringDepartment of Electrical and Electronic Engineering

Professor of Millimetre-wave Systems



+44 (0)20 7594 6167s.lucyszyn Website CV




Ms Susan Brace +44 (0)20 7594 6215




602Electrical EngineeringSouth Kensington Campus






BibTex format

author = {Episkopou, E and Papantonis, S and Otter, WJ and Lucyszyn, S},
doi = {10.1109/TTHZ.2012.2208456},
journal = {IEEE Transactions on Terahertz Science and Technology},
pages = {513--524},
title = {Defining material parameters in commercial EM solvers for arbitrary metal-based THz structures},
url = {},
volume = {2},
year = {2012}

RIS format (EndNote, RefMan)

AB - Frequency-domain solvers are used extensivelyfor modeling arbitrary metal-based terahertz structures. Fourwell-known commercially available electromagnetic (EM) modelingsoftware packages include HFSS™, CST MicrowaveStudio®, EMPro, and RSoft. However, there are a number ofoperational issues that relate to how they can be used to obtainmore meaningful and accurate results. Even experienced usersof these and similar software packages may not fully appreciatesome of the subtle ambiguities in defining boundaries and materialparameters for use in THz applications. To this end, a detailedcomparative study has been undertaken, in consultation with allfour vendors. First, in order to avoid introducing ambiguities,frequency dispersion in materials has to be clearly defined fromfirst principles; in both intrinsic and effective forms. Differentfrequency dispersion models are then introduced for ‘metal-like’materials. To act as benchmark structures, conventional air-filledmetal-pipe rectangular waveguides, associated cavity resonatorsand a spoof surface plasmon waveguide have been simulated,using a raft of different approaches; with a view to illustratingquantifiable weaknesses in commercial software packages forsimulating arbitrary metal-based THz structures. This paperhighlights intuitive and logical approaches that give incorrectresults and, where possible, makes recommendations for themost appropriate solutions that have hitherto not been given inTechnical Notes.
AU - Episkopou,E
AU - Papantonis,S
AU - Otter,WJ
AU - Lucyszyn,S
DO - 10.1109/TTHZ.2012.2208456
EP - 524
PY - 2012///
SP - 513
TI - Defining material parameters in commercial EM solvers for arbitrary metal-based THz structures
T2 - IEEE Transactions on Terahertz Science and Technology
UR -
UR -
UR -
VL - 2
ER -