Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 16, Issue -, Pages 3000-3004Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2017.2757240
Keywords
Graphene; leaky-wave antenna; reconfigurability; terahertz (THz)
Funding
- National Natural Science Foundation of China [61331004, 61622113]
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This letter proposes a new sinusoidally-modulated graphene leaky-wave antenna for beam scanning at terahertz (THz) with only one biasing voltage required. The antenna consists of a number of dc-gated graphene ribbons on a grounded dielectric substrate. The graphene ribbons are nonuniformly gapped to realize a sinusoidally-modulated reactance surface to support the leaky-wave operation. The analysis shows that the beam angle and leakage rate can be controlled by the gate voltage, indicating a good reconfigurability. The simulated and analytical results agree well with each other that not only validate the design method but also show that the new antenna is promising for graphene-based THz wireless systems.
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