Numerical Analysis of a Metamaterial-based Ridge Gap Waveguide with a Bed of Nails as Parallel-Plate Mode Killer

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 5Language: englishTyp: PDF

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Alfonso, Esperanza; Valero-Nogueira, Alejandro (iTeam, Universidad Politécnica de Valencia, Camino de Vera s/n, Valencia 46022, Spain)
Kildal, Per-Simon; Herranz, José I. (Department of Signals and Systems, Chalmers University of Technology, 41296 Gothenburg, Sweden)

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.