Waveguide-Fed Tunable Terahertz Antenna Based on Hybrid Graphene-Metal Structure
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Waveguide-Fed Tunable Terahertz Antenna Based on Hybrid Graphene-Metal Structure
Abstract—Abstract This paper presents a novel tunable terahertz antenna based on a hybrid graphene-metal structure fed by a waveguide. First, the hybrid plasmonic waveguide is studied by analytical and numerical methods. Then, an efficient terahertz antenna is designed by an analytical approach using the transmission line model. The antenna performances are evaluated in the terahertz frequency band by a full-wave electromagnetic solver.Contrary to previous terahertz antennas based on graphene, the results show that the proposed antenna has satisfactory radiation efficiency and gain. Moreover, this study demonstrates that the reflection parameter of the antenna can be tuned by the chemical potential of graphene. The proposed antenna can be applied for terahertz applications such as wireless communication in interchip and intrachip devices and sensing.
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