Terahertz antenna based on graphene Terahertz antenna based on graphene M.Dragoman,1,a͒A.A.Muller,1D.Dragoman,2F.Coccetti,3and R.Plana3 1National Institute for Research and Development in Microtechnology,IMT,P.O.Box38-160,023573 Bucharest,Romania 2Department of Physics,University of Bucharest,...
Dielectric resonator antennaGraphene-based antennasMiniaturizationRadiation efficiencySurface plasmon polaritonsTerahertz bandTunabilityGraphene is a unique material for the implementation of terahertz antennas due to extraordinary properties of the resulting devices, such as tunability and compactness. Existing ...
A tunable terahertz nanoantenna based on graphene is presented. The proposed antenna has a characteristic of dynamic frequency reconfiguration, high miniaturization, easy integration, low reflection coefficient, and good omnidirectional radiation pattern. The attractive properties of the graphene antenna has ...
We propose the concept and design of terahertz (THz) phase shifters for phased antenna arrays based on integrally-gated graphene parallel-plate waveguides (GPPWGs). We show that an active transmission-line may be realized by combining GPPWGs with double-gate electrodes, in which the applied gate...
tight-bindingmodel asfunctionsoftheCNTlength,diameter,andedgegeometry. Then,relevantantennaparameterssuchasthefundamental resonantfrequencyandtheinputimpedancearecalculatedand comparedtothoseofanano-patchantennabasedonaGraphene Nanoribbon(GNR)withsimilardimensions.Theresultsshow thatforamaximumantennasizeintheorderof...
We then shift the Luneburg lens to a slightly offset position, away from the center of the transmitter horn antenna, and repeat the angular characterization. In this fashion, we can characterize the far-field output pattern for all possible input excitation positions on the flat surface of the ...
The detector was assembled on a THz–transparent Si wafer attached to a Si lens focusing the incident radiation onto the antenna (Fig. 1b). Fig. 1 Graphene-based THz detectors. a Schematics of the encapsulated BLG FET used in this work. b 3D rendering of our resonant photodetector. THz ...
Bauer, et al.., “Antenna-integrated 0.6 THz FET direct detectors based on CVD graphene,” Nano Lett., vol. 14, no. 10, pp. 5834–5838, 2014, https://doi.org/10.1021/nl5027309.Search in Google Scholar PubMed [16] J. Delgado-Notario, J. Velazquez-Perez, Y. Meziani, and K. ...
High-speed, large-area and high-precision fabrication of aspheric micro-lens array based on 12-bit direct laser writing lithography 2022, Light: Advanced Manufacturing Antenna-integrated silicon-plasmonic graphene sub-terahertz emitter 2021, APL Photonics Ultralow Scattering and Broadband Metasurface Using...
A novel metamaterial structure consisting of multiple graphene/dielectric layers and metallic substrate is proposed to achieve the broadband absorption response at terahertz (THz) frequencies. Utilizing the phase modulation effect generated by graphene r