Modal properties of parallel plate waveguide partially loaded with double negative materials

ABSTRACT

Properties of eigen-solutions in parallel plate waveguides partially loaded with Lorentz type Double Negative Materials (DNG), modelled by lossless/lossy, identical/non-identical electric, magnetic parameters are presented. Modal cut-off phenomena associated with surface waves, transitions between evanescent/propagating, forward/backward waves and their dependence on frequency, filling factor and dispersive material parameters are investigated. Novel conditions are given for the existence of surface waves and for the emergence of complex eigenvalues in the absence of losses, and supported with numerical results of exact frequency domain analysis.

KEYWORDS:

• Backward waves
• complex waves
• double negative material (DNG)
• eigen-solutions
• parallel plate waveguide
• surface waves

ORCID

Ayşegül Pekmezci http://orcid.org/0000-0003-0893-1056

Additional information

Notes on contributors

Ayşegül Pekmezci

Ayşegül Pekmezci was born in Zonguldak, Turkey, in February 1984. She received her BSc and MSc degrees in Electrical and Electronics Engineering from University of Gaziantep, and PhD degree in Electronics and Communication Engineering from Doğuş University in 2007, 2010 and 2018, respectively. Currently, she is with the Department of Electronics and Communications Engineering, Dogus University in Istanbul, Turkey. Her research interests include theoretical and computational aspects of scattering and interaction with dispersive media, numerical solutions of electromagnetic wave problems.

Ercan Topuz

Ercan Topuz received his MSc and PhD degrees in electronics and communication from Istanbul Technical University, Istanbul, Turkey, in 1965 and 1973, respectively. Currently, he is with the Department of Electronics and Communications Engineering, Dogus University in Istanbul, Turkey. He has authored or co-authored over 70 technical papers in books, journals, and conferences. His research interests include theoretical and computational electromagnetics, microwave/optical devices and systems. Dr. Topuz is a member of the Electromagnetics Academy.