Results 251 to 260 of about 256,534 (295)

Broadband Linear to Circular Reflection Polarization Converter

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019
A broadband linear to circular polarization converting surface is presented. The polarization reflector consists of a dogbone-shaped FSS separated from the metallic ground plane by a Teflon dielectric slab of thickness equal to 3.95 mm. The polarization converter is composed by a periodic arrangement of metallic particles, positioned in a square ...
Costa F., Genovesi S., Monorchio A., Zhang S., Cui Y., Liu J.   +5 more
openaire   +2 more sources

Linear-to-circular polarization transformer using electrically small antennas

Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012
In this contribution, a linear-to-circular polarization transformer based on the employment of electrically small antennas is presented. The proposed setup consists of a circular metallic disk with a sub-wavelength aperture through which two sets of connected circularly polarized electrically small antennas are placed. We assume to use such a structure
BARBUTO, MIRKO, BILOTTI, FILIBERTO, TOSCANO, ALESSANDRO   +2 more
openaire   +3 more sources

A Dielectric Linear-to-Circular Polarization Converter Exploiting Uniaxial Anisotropy

2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI)
A linear-to-circular polarization converter, consisting of a suitable arrangement of thin periodic airdielectric slabs, is presented. The uniaxial nature of the periodic structure, highlighted by the field propagation matrix representation, is exploited to perform the required field polarization conversion.
Baldazzi E., Cicchetti R., Foged L., Testa O.   +3 more
openaire   +3 more sources

C-Band Linear Polarization Metasurface Converter with Arbitrary Polarization Rotation Angle Based on Notched Circular Patches

Crystals, 2022
This paper presents a linear polarization metasurface converter with arbitrary polarization rotating angle and stable oblique incident response, which is based on the concept of linear-to-circular polarization decomposition and recombination.
Tao Zhang, Xiaoyi Wang
exaly   +2 more sources

Anisotropic Impedance Surfaces for Linear to Circular Polarization Conversion

IEEE Transactions on Antennas and Propagation, 2012
Anisotropic impedance surfaces are employed as low-profile and broadband reflectors that convert orthogonal linear to right- and left-handed circular polarization respectively.
Efstratios Doumanis, George Goussetis, JOSÉ Luis Gomez-Tornero   +2 more
exaly   +2 more sources

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Multi-octave linear-to-circular polarizers

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017
Linear-to-circular polarizers operating at mm-wave frequencies with multiple octaves of bandwidth are reported. First, a polarizer constructed from cascaded anisotropic dielectrics is discussed. This polarizer scales the design of achromatic waveplates from optical frequencies down to mm-wave frequencies.
Carl Pfeiffer, Boris Tomasic
openaire   +1 more source

Backscatter linear and circular polarization analysis of roughened aluminum

Applied Optics, 1998
A study of cross-polarized and copolarized intensities backscattered from roughened aluminum surfaces is presented for both linear and circular incident polarization states. The angular variation of measured Mueller matrices is shown to contain only diagonal elements, as predicted by the reciprocity theorem.
G D, Lewis, D L, Jordan, E, Jakeman
openaire   +2 more sources

Linear-to-circular polarization transformation

Journal of Communications Technology and Electronics, 2010
Two simple polarization changers are described. Their operation is based on the difference of the phase velocities of two fundamental modes of a rectangular waveguide that have mutually perpendicular electric fields. The resonator variant of the changer is also a frequency filter.
openaire   +1 more source

Linear and circular polarization transmit-arrays in V-band

The 40th European Microwave Conference, 2010
This paper presents the design and demonstration of linearly-polarized and circularly-polarized transmit-arrays operating in the 60-GHz band. The arrays are fabricated with standard printed-board technology and are designed with a fairly simple structure using three metal layers. The experimental results show very good performances for both arrays with
Kaouach, Hamza, Dussopt, Laurent, Lanteri, Jérôme, Sauleau, Ronan, Koleck, Thierry   +4 more
openaire   +2 more sources