Reconfigurable terahertz Vivaldi antenna based on a hybrid graphene-metal structure

摘要

This paper presents a reconfigurable terahertz Vivaldi antenna based on ahybrid graphene-metal structure. The proposed antenna uses a novel taperedslot edge with hybrid graphene-metal structure to improve the electromagneticcharacteristics of classical metallic Vivaldi antennas. The results show that theproposed hybrid graphene-metal Vivaldi antenna can be dynamically reconfiguredvia electric field bias, and has a low reflection coefficient. Moreover,this study demonstrates that the proposed antenna has excellent gain and radiationefficiency than that of the graphene Vivaldi antenna, and brings morepossibilities to the realization and application of graphene antennas in the terahertzband, which is expected to use in terahertz wireless communication inthe future.