Conformal parallel plate waveguide polarizer integrated in a geodesic lens antenna

FV Vidarsson, O Zetterstrom… - … on Antennas and …, 2022 - ieeexplore.ieee.org
Here, we propose a low-profile polarizing technique integrated in a parallel plate waveguide
(PPW) configuration, compatible with fully metallic geodesic lens antennas. The geodesic …

Numerical analysis and parametric optimization of t-shaped symmetrical metasurface with broad bandwidth for solar absorber application based on graphene material

M Alsharari, A Armghan, K Aliqab - Mathematics, 2023 - mdpi.com
Solar energy is an essential renewable energy source among all the other renewable
energy sources. It is possible to improve the efficiency of the solar energy absorber by …

Fully Metallic Dual-Band Linear-to-Circular Polarizer for K/Ka-band

J Lundgren, O Zetterstrom, F Mesa… - IEEE Antennas and …, 2021 - ieeexplore.ieee.org
A dual-band polarizer is presented that converts linear polarization into circular polarization
with orthogonal handedness in the satcom bands 19.7–20.2 GHz and 29.5–30 GHz. The …

Periodic structures with higher symmetries: Their applications in electromagnetic devices

O Quevedo-Teruel, G Valerio, Z Sipus… - IEEE Microwave …, 2020 - ieeexplore.ieee.org
Higher symmetries frequently amaze human beings because of the illusions and incredible
landscapes such symmetries can produce. For example, imagine the unearthly pictures of …

High refractive index electromagnetic devices in printed technology based on glide-symmetric periodic structures

P Arnberg, O Barreira Petersson, O Zetterstrom… - Applied Sciences, 2020 - mdpi.com
We demonstrate the beneficial effects of introducing glide symmetry in a two-dimensional
periodic structure. Specifically, we investigate dielectric parallel plate waveguides …

[HTML][HTML] Dispersion analysis of twist-symmetric dielectric waveguides

P Castillo-Tapia, K Van Gassen, Q Chen, F Mesa… - Photonics, 2021 - mdpi.com
We propose a circular twist-symmetric dielectric waveguide that is polarization-selective. In
the practical implementation of optical fibers, a selective circular polarization is more …

Dispersion analysis of periodically loaded transmission lines with twist symmetry using the mode-matching technique

O Zetterstrom, G Valerio, F Mesa, F Ghasemifard… - Applied Sciences, 2020 - mdpi.com
A mode-matching formulation is presented and used to analyze the dispersion properties of
twist-symmetric transmission lines. The structures are coaxial lines periodically loaded with …

Coplanar Waveguide (CPW) Loaded with Symmetric Circular and Polygonal Split-Ring Resonator (SRR) Shapes

S Harnsoongnoen, S Srisai, P Kongkeaw - Symmetry, 2024 - mdpi.com
This paper investigates the performance of coplanar waveguide (CPW) structures loaded
with symmetric circular and polygonal split-ring resonators (SRRs) for microwave and RF …

Helix antenna array based on higher symmetries for antenna miniaturization and mutual coupling reduction

Á Palomares-Caballero, A Alex-Amor… - 2019 IEEE-APS …, 2019 - ieeexplore.ieee.org
This document presents the design of an array of helix antennas in axial mode based on
higher symmetries. These higher symmetries permit, for a given frequency, the …

Mode-matching analysis of loaded transmission lines with twist symmetries

O Zetterstrom, G Valerio, F Mesa… - 2020 14th European …, 2020 - ieeexplore.ieee.org
This paper studies the propagation characteristics in twist-symmetric structures by means of
a mode-matching approach. The studied structures are coaxial transmission lines …