Analysis of Periodic Structures Made of Pins Inside a Parallel Plate Waveguide

Symmetry

Eva Rajo-Iglesias¹  Carlos Sanchez-Cabello¹  Nafsika Memeletzoglou¹  Francisco Pizarro-Torres² 

[1] Department of Signal Theory and Communications, University Carlos III of Madrid, 28911 Leganés, Spain;Escuela de Ingeniería Eléctrica, Pontificia Universidad Católica de Valparaíso, Valparaíso 2362804, Chile;

关键词: bed of nails;    glide symmetry;    gap waveguide technology;    dispersion;    stopband;   

DOI  :  10.3390/sym11040582

来源: DOAJ

【 摘 要 】

In this work, we have analyzed different versions of periodic structures made with metallic pins located inside a parallel plate waveguide (PPWG), varying the symmetry and disposition of the pins. The analysis focuses on two main parameters related to wave propagation. On one hand, we have studied how the different proposed structures can create a stopband so that the parallel plate modes can be used in gap waveguide technology or filtering structures. On the other hand, we have analyzed the dispersion and equivalent refractive index of the first propagating transverse electromagnetic mode (TEM). The results show how the use of complex structures made with pins in the top and bottom plates of a PPWG have no advantages in terms of the achieved stopband size. However, for the case of the propagating mode, it is possible to find less dispersive modes and a higher range of equivalent refractive indices when using double-pin structures compared to a reference case with single pins.

【 授权许可】

Unknown