861 citations · 1.8k across the 9 of their papers we have counts for
9 papers
Effects of Spatial Dispersion on Reflection from Mushroom-type Artificial Impedance Surfaces
Olli Luukkonen, Mário G. Silveirinha, Alexander B. Yakovlev +3
Several recent works have emphasized the role of spatial dispersion in wire media, and demonstrated that arrays of parallel metallic wires may behave very differently from a uniaxi…
A Thin Electromagnetic Absorber for Wide Incidence Angles and Both Polarizations
Olli Luukkonen, Filippo Costa, Agostino Monorchio +1
In this paper a planar electromagnetic absorber is introduced whose performance is maintained over a wide change of the incidence angle for both TE and TM polarization. The absorbe…
An Efficient and Simple Analytical Model for Analysis of Propagation Properties in Impedance Waveguides
Olli Luukkonen, Constantin R. Simovski, Antti V. Räisänen +1
In this paper propagation properties of a parallel-plate waveguide with tunable artificial impedance surfaces as sidewalls are studied both analytically and numerically. The impeda…
Simple and accurate analytical model of planar grids and high-impedance surfaces comprising metal strips or patches
Olli Luukkonen, Constantin Simovski, Gérard Granet +4
This paper introduces simple analytical formulas for the grid impedance of electrically dense arrays of square patches and for the surface impedance of high-impedance surfaces base…
Modeling and Analysis of Composite Antenna Superstrates Consisting on Grids of Loaded Wires
Pekka Ikonen, Elena Saenz, Ramon Gonzalo +1
We study the characteristics and radiation mechanism of antenna superstrates based on closely located periodical grids of loaded wires. An explicit analytical method based on the l…
Magneto-Dielectric Substrates in Antenna Miniaturization: Potential and Limitations
Pekka Ikonen, Konstantin Rozanov, Alexey Osipov +1
In the present paper we discuss antenna miniaturization using magneto-dielectric substrates. Recent results found in the literature reveal that advantages over conventional dielect…