This paper presents the basic ideas of how local waveguides and transmission lines can be
designed to propagate along desired paths in the air gap between two metal surfaces. The …

The newly introduced parallel-plate ridge gap waveguide consists of a metal ridge in a
metamaterial surface, covered by a metallic plate at a small height above it. The gap …

We discuss and demonstrate by measurements and computations the relation between
electromagnetic bandgap surfaces (EBG) used to realize artificial magnetic conductors and …

We introduce an algorithm for calculating spectral domain Green's functions of planar,
circular cylindrical and spherical multilayer structures. The three spectral domain problems …

The Green's functions for different realisations of planar soft and hard surfaces are
developed by using the asymptotic boundary conditions and the spectral-domain approach …

This study presents Green's functions of parallel-plate structures, where one plate has a
smooth conducting surface and the other an artificial surface realised by a one-dimensional …

The asymptotic strip boundary condition (ASBC) is applied to analyze the solution of the
electromagnetic scattering from a conducting cylinder coated with a homogeneous linear …

A simple asymptotic solution for periodic corrugated surfaces when the corrugation period
approaches zero is presented. The authors enforce an asymptotic boundary condition …

The present paper will give an overview of the research on hard surfaces and hard
waveguides leading to the wideband ridge gap waveguide. The overview will be supported …

Simple surface integral equations are obtained for infinitely extended cylindrical structures
with arbitrarily shaped cross-section of transverse corrugations. The asymptotic corrugated …