OSA | Conference on Lasers and Electro-Optics/Pacific Rim 2015 Vividly-colored silicon metasurface based on collective electric and magnetic resonances OSA | Searching for evidence of optical rectification… A current challenge in photonics is to design new versatile photodetectors based on optical-rectification-induced photovoltage; these are more attractive than classical photodetectors because they do not rely on band-to-band transitions. plasmonic nanoantenna arrays: Topics by WorldWideScience.org Our calculations are based on a hybrid layer-multiple-scattering (hLMS method based on a discrete-dipole approximation (DDA/T-matrix point matching method.
May 31, 2018 ... In Reference [6,7], graphene-based antennas devised in microwave frequency and ... Owing to its negative imaginary conductivity, research on tunable ..... (a) Broadband optically transparent H-shaped slot antenna above the ...
THz plasmonic resonances in hybrid reduced-graphene-oxide and ... Fullwave analysis of hybrid metal-graphene-rGO is also presented and discussed. ... and Modreanu, M. A tunable microwave slot antenna based on graphene, ... Silicon graphene waveguide tunable broadband microwave photonics ... implement a tunable broadband microwave photonics phase shifter based ... “ Nanoscale electro-optic modulators based on graphene-slot waveguides,” J. ..... phased antenna arrays, microwave filters and reconfigurable front-ends [12,13]. A. Efficient 2-D leaky-wave antenna configurations based on graphene ... May 9, 2017 ... Efficient 2-D leaky-wave antenna configurations based on graphene metasurfaces ..... Although different designs of metasurfaces exist in the microwave range ..... slot etched in the ground plane and back-illuminated by a coeherent THz ..... the realization of tunable LWAs with a tapered aperture distribution.
Projekt - Interdisciplinární výzkum bezdrátových technologií…
The design of a wideband single-layer dual-band ... A design for a broadband single-layer dual-band reflectarray antenna is presented. A genetic algorithm is employed to design and optimize the element of the antenna. The basic idea to improve the bandwidth of the proposed antenna is based on increasing the range of the linear region of the phase response of the microstrip element.
Graphene-Based Nano-Antennas May Enable Networks of Tiny Machines
The design of a wideband single-layer dual-band reflectarray ... A design for a broadband single-layer dual-band reflectarray antenna is presented. A genetic algorithm is employed to design and optimize the element of the antenna. The basic idea to improve the bandwidth of the proposed antenna is based on increasing the range of the linear region of the phase response of the microstrip element. Antenna-Integrated 0.6 THz FET Direct Detectors Based on CVD ... This is the first time room-temperature direct detection has been demonstrated using CVD graphene, which introduces the potential for scalable, wafer-level production of graphene detectors. Antenna-Integrated 0.6 THz FET Direct Detectors Based on CVD Graphene - Nano Letters (ACS Publications)
In this paper a tunable antenna using graphene - based fractal shape artificial magnetic conductor (AMC) is propose d for ultra - wideband (UWB) terahertz (THz) application. The resonance frequency of the proposed antenna can be tuned by varying the applied DC voltage which leads to variation in...
Graphene antennae in the microwave part of the spectrum can be tuned by an applied voltage. This is the latest result, published in the renown physics journal Applied Physics Letters , by a pan-European collaboration between Romania, Greece, Italy, and Ireland, using Graphenea graphene. Researchers demonstrate a graphene-based tunable … The antenna is less than 1mm thick and has a planar diameter of 100mm, which according to the team makes it one of the smallest microwave antennas in the existence. It was produced using a simple fabrication procedure and a standard CVD graphene layer on an SoI substrate.
dielectric resonator antenna: Topics by WorldWideScience.org On top of the slot there is an air cavity and on top, a small portion of a hemispherical lens. The fractional bandwidth of such antennas is around 10 percent, which is good enough for heterodyne imaging applications.The new geometry makes … Best Paper Finalists — Eucap 2016 Lars Foged; Francesco Saccardi (Microwave Vision Italy); Andrea Giacomini (Microwave Vision Italy (MVI)); IMS2019 Technical Sessions | IMS2019 A novel method using dual-mode cavities to create transmission zeros, a folded ridge waveguide dual-band tunable bandstop filter, and a filter using a resonant inverter structure will also be presented. Industry Publications Referencing RSoft Products – Synopsys…