A dielectric free near field phase transforming structure for wideband gain enhancement of antennas
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-021-93975-2
Abstract: The gain of some aperture antennas can be significantly increased by making the antenna near-field phase distribution more uniform, using a phase-transformation structure. A novel dielectric-free phase transforming structure (DF-PTS) is presented in this paper… read more here.
Keywords: wideband; phase; gain; near field ... See more keywords
Influence of external electric field on phase transitions in the thin film ferroelectrics
Sign Up to like & getrecommendations! Published in 2020 at "Ferroelectrics"
DOI: 10.1080/00150193.2020.1736922
Abstract: Abstract Based on the phenomenological theory of Landau–Ginzburg–Devonshire, the singularities of the phase transition in a thin ferroelectric film in external electric field are investigated depending on the film thickness and the type of polarization… read more here.
Keywords: external electric; field; film; field phase ... See more keywords
Mean-field phase diagram of the extended Bose-Hubbard model of many-body cavity quantum electrodynamics
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.99.043633
Abstract: We investigate the mean-field phase diagram of the Bose-Hubbard model with infinite-range interactions in two dimensions. This model describes ultracold bosonic atoms confined by a two-dimensional optical lattice and dispersively coupled to a cavity mode… read more here.
Keywords: electrodynamics; field phase; phase diagram; mean field ... See more keywords
Fixed field phase shifters for a multipass recirculating superconducting proton linac
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review Accelerators and Beams"
DOI: 10.1103/physrevaccelbeams.24.030101
Abstract: The multi-pass recirculating proton linac can significantly improve the usage efficiency of rf superconducting cavities by accelerating the proton beam through the same cavity multiple times. However, in order to achieve acceleration for different energy… read more here.
Keywords: proton linac; field phase; fixed field; proton ... See more keywords
Beam-Scanning Antenna Based on Near-Electric Field Phase Transformation and Refraction of Electromagnetic Wave Through Dielectric Structures
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3033284
Abstract: An elegant combination of electric near-field phase transformation technique and electromagnetic-wave refraction, implemented through a pair of 3D printed dielectric structures, has been used to demonstrate a Ka-band beam-scanning antenna system. The system comprises a… read more here.
Keywords: dielectric structures; phase transformation; field phase; antenna ... See more keywords
Spin angular momentum density in the tight focus of a light field with phase and polarization singularities
Sign Up to like & getrecommendations! Published in 2019 at "Computer Optics"
DOI: 10.18287/2412-6179-2019-43-6-1098-1102
Abstract: For a light field with both phase and polarization singularities at its center, expressions are obtained that describe the distribution of the spin angular momentum (SAM) density in the sharp focal spot of an aplanatic… read more here.
Keywords: spin angular; phase polarization; angular momentum; field phase ... See more keywords