Results 1 to 10 of about 256,534 (295)

Directional Aspects of Vegetation Linear and Circular Polarization Biosignatures. [PDF]

open access: yesAstrobiology, 2022
Homochirality is a generic and unique property of all biochemical life and it is considered a universal and agnostic biosignature. Upon interaction with unpolarized light, homochirality induces fractional circular polarization in the light that is scattered from it, which can be sensed remotely.
Patty CHL   +4 more
europepmc   +5 more sources

Dual-band cross-polarization and linear-to-circular polarization converting metasurface

open access: yesResults in Physics
A dual-band multifunctional polarization converting metasurface (PCMS) for linear-to-linear polarization conversion (LTLPC) and linear-to-circular polarization conversion (LTCPC) is presented in this paper.
Abdullah   +4 more
doaj   +5 more sources

A Broadband Millimeter-Wave Circularly Polarized Folded Reflectarray Antenna Based on Transmissive Linear-to-Circular Polarization Converter [PDF]

open access: yesMicromachines
In this paper, a wideband circularly polarized folded reflectarray antenna (CPFRA) based on a transmissive linear-to-circular polarization converter is proposed. The CPFRA consists of a primary reflector and a sub-reflector.
Yue Cao   +4 more
doaj   +3 more sources

Dual-Frequency Linear-to-Circular Polarization Converter for Ka-Band Applications [PDF]

open access: yesSensors, 2022
A dual-band linear-to-circular planar polarization converter based on a multilayer printed circuit board (PCB) is proposed and demonstrated. Each cell of the periodic surface is formed by six substrate layers separated by five foam spacers. The three top
Francesco Greco, Emilio Arnieri
doaj   +2 more sources

Versatile Cross‐Polarization Conversion Chiral Metasurface for Linear and Circular Polarizations

open access: yesAdvanced Optical Materials, 2020
AbstractIn this work, first the necessary conditions for a versatile cross‐polarization conversion meta‐atom that operates both for linear and circular cross polarizations are discussed. Based on these, a versatile chiral metasurface cross‐polarization converter is proposed.
Peng Fei   +2 more
exaly   +2 more sources

Multifunctional Metasurface for Linear-to-Linear and Linear-to-Circular Polarization Conversion

open access: yesIEEE Access
This paper presents a compact, multifunctional, passive polarization-converting metasurface (PCM) designed for linear-to-linear polarization (LTLP) and linear-to-circular polarization (LTCP) conversion across distinct, non-overlapping frequency bands ...
Mujahid Ali Shah   +6 more
doaj   +2 more sources

Polarization-Reconfigurable Metasurface Antenna Design for Drone Terminals Based on Characteristic Mode Analysis [PDF]

open access: yesMicromachines
To enhance the anti-jamming performance and operational reliability of drones, this paper presents the design, fabrication, and measurement of a novel polarization-reconfigurable metasurface antenna that meets these demands.
Shiquan Zhang   +3 more
doaj   +2 more sources

Optimal design of broadband linear-to-circular polarization conversion metasurface

open access: yesMaterials & Design
Due to their inherent defects, circular polarization discrimination methods involving amplitude-phase or axial ratio are obstacles of the computer software-based optimal design of broadband linear-to-circular (LTC) polarization conversion metasurfaces ...
Jiao Wang   +4 more
doaj   +3 more sources

Physical Conditions and Variability Processes in AGN Jets through Multi-Frequency Linear and Circular Radio Polarization Monitoring

open access: yesGalaxies, 2016
Radio polarimetry is an invaluable tool to investigate the physical conditions and variability processes in active galactic nuclei (AGN) jets. However, detecting their linear and circular polarization properties is a challenging endeavor due to their low
Ioannis Myserlis   +5 more
doaj   +3 more sources

Multifunctional multi-band metasurface for linear to circular polarization conversion in transmission and reflection modes

open access: yesResults in Physics, 2023
Compact devices encompassing multiple functionalities in multiple bands of operation has become a new and emerging research area for the microwave and optical regime. In this work, design, fabrication and experimental verification of a triple band linear
Ayesha Kosar Fahad   +3 more
doaj   +1 more source

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