A tunable microwave slot antenna based on graphene
- National Institute for Research and Development in Microtechnology (IMT), Str. Erou Iancu Nicolae 126 A, 077190 Bucharest-Voluntari (Romania)
- Foundation for Research and Technology Hellas (FORTH), P.O. Box 1527, Vassilika Vuton, Heraklion 71110, Crete, Hellas (Greece)
- Università Politecnica delle Marche, via Brecce Bianche 12, 60131 Ancona (Italy)
- Tyndall National Institute, Lee Maltings Complex, Dyke Parade, Cork (Ireland)
The paper presents the experimental and modeling results of a microwave slot antenna in a coplanar configuration based on graphene. The antennas are fabricated on a 4 in. high-resistivity Si wafer, with a ∼300 nm SiO{sub 2} layer grown through thermal oxidation. A CVD grown graphene layer is transferred on the SiO{sub 2}. The paper shows that the reflection parameter of the antenna can be tuned by a DC voltage. 2D radiation patterns at various frequencies in the X band (8–12 GHz) are then presented using as antenna backside a microwave absorbent and a metalized surface. Although the radiation efficiency is lower than a metallic antenna, the graphene antenna is a wideband antenna while the metal antennas with the same geometry and working at the same frequencies are narrowband.
- OSTI ID:
- 22398905
- Journal Information:
- Applied Physics Letters, Vol. 106, Issue 15; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORBENTS
ANTENNAS
CHEMICAL VAPOR DEPOSITION
COMPUTERIZED SIMULATION
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTRIC POTENTIAL
FREQUENCY DEPENDENCE
GHZ RANGE
GRAPHENE
LAYERS
METALS
MICROWAVE RADIATION
OXIDATION
REFLECTION
SILICON OXIDES
SURFACES