Results 201 to 210 of about 1,149,214 (258)

Crossed-Dipole-Shaped Metasurface Transmissive Linear-to-Circular Polarization Converter

2024 15th Global Symposium on Millimeter-Waves & Terahertz (GSMM)
This paper presents a single-layer wideband linear-to-circular (LTC) polarization converter implemented with a crossed-dipole-shaped metasurface. The LTC polarization converter is placed on the top side of a single-substrate layer.
Cho Hilary Scott Nkimbeng, Heesu Wang, Ikmo Park   +2 more
semanticscholar   +1 more source

Miura origami based reconfigurable polarization converter for multifunctional control of electromagnetic waves

Photonics Research
Polarization is one of the basic characteristics of electromagnetic (EM) waves, and its flexible control is very important in many practical applications.
Zhibiao Zhu, Yongfeng Li, Zhe Qin, Lixin Jiang, Wenjie Wang, Hongya Chen, Jiafu Wang, Y. Pang, S. Qu   +8 more
semanticscholar   +1 more source

Surface wave polarization converter

2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015
A surface Bare polarization converter vias designed and fabricated. The structure conTerts the polarization of surface waves between pare TM and IE polarizations. The design was fabricated using printed circuit techniques, and it was composed of a solid ground plane and an etched top later of anisotropic metallic patterning Conversion is achieved by ...
Ryan Quarfoth, Amit Patel
openaire   +1 more source

Reflection gratings as polarization converters

Optics Communications, 1997
Abstract An experimental and theoretical modelling study of corrugated gold surfaces, where the refractive index of the upper medium is varied to change the effective wavelength of the incident radiation, is presented. For certain corrugation amplitudes we show that it is possible to convert nearly 100% of plane polarized light incident normal to the
Richard A. Watts, J. Roy Sambles
openaire   +1 more source

Liquid-crystalline polarization converter

Technical Physics Letters, 2001
A new concept of the polarization converter based on a nematic liquid crystal is proposed for application in an acoustic imaging system.
O. A. Kapustina, N. A. Kolesnikova
openaire   +1 more source

Unidirectional magnetooptic polarization converters

Journal of Lightwave Technology, 1999
Inclination of the bias magnetization in a magnetooptic waveguide yields both nonreciprocal phase shifts and polarization conversion. This enables the design of unidirectional polarization converters, i.e., waveguides that switch between orthogonal polarizations for one direction of light propagation, but keep the polarization state for light ...
M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, H. Dotsch, P. Hertel   +4 more
openaire   +1 more source

A 540-MHz 10-b polar-to-Cartesian converter

IEEE Journal of Solid-State Circuits, 1991
A 10-b polar-to-Cartesian converter for generating digital sine and cosine waveforms simultaneously with a maximum sample rate of 540 MHz is presented. The converter is derived from a coordinate rotation digital computer (CORDIC) processor. Implementation details and the chip layout are given.
Gerard C. M. Gielis, Rudy J. van de Plassche, Johan van Valburg   +2 more
openaire   +1 more source

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   +1 more source

Active Polarization Converter in AlGaAs

Nonlinear Guided Waves and Their Applications, 1998
Asymmetric AlGaAs waveguides working in a cross-phase modulation regime and operated at photon energies below the band gap could be promising for the design of active TE-TM polarization converters. Crucially important for devices with asymmetrical cross-section is the orientation of the optical axes to maximize the TE-TM conversion.
openaire   +1 more source

Broadband terahertz polarization converter/absorber based on the phase transition properties of vanadium dioxide in a reconfigurable metamaterial

Optical and quantum electronics, 2023
Peng Gao, Cong Chen, Yaowei Dai, Hao Luo, Yue-shu Feng, Yujia Qiao, Z. Ren, Hai Liu   +7 more
semanticscholar   +1 more source