CST – Computer Simulation Technology

Numerical Analysis of a Metamaterial-based Ridge Gap Waveguide with a Bed of Nails as Parallel-Plate Mode Killer
Esperanza Alfonso, Per-Simon Kildal, Alejandro Valero-Nogueira, José I. Herranz
3rd European Conference on Antennas and Propagation, 2009. EuCAP 2009.
23-27 March 2009
23 - 27
This paper presents a numerical analysis of a ridge gap waveguide. Ridge gap waveguides belongs to a new metamaterial-based waveguide technology for millimeter and submillimeter waves which emerged recently. The magnetic boundary condition or high-impedance surface (ideally a PMC) has been realized by means of a bed of nails as parallel-plate mode killer. Field plots of the ideal PEC-over-PMC ridge gap waveguide are presented, as well as when the PMC is realized by the bed of nails. The quasi-TEM mode shows an octave useable bandwidth for the bed of nails case.

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