Abstract
An annular dielectric resonator (DR) antenna (DRA) is implemented for THz applications. A silicon made DR is loaded with graphene disk for obtaining the tunability in the frequency response. The physical parameters of silicon annular DR can be set to obtain the resonance at any frequency in the lower THz band and can be tuned by changing the chemical potential of graphene nano-disk placed at the top of the DR. The response of antenna is preserved after changing the chemical potential of graphene. The higher order hybrid electromagnetic mode is excited in the antenna structure. The proposed research work provides a way to implement the antenna for THz frequency with high gain around 3.8 dBi and radiation efficiency in the range 72 − 75%.
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Varshney, G. Tunable Terahertz Dielectric Resonator Antenna. Silicon 13, 1907–1915 (2021). https://doi.org/10.1007/s12633-020-00577-0
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DOI: https://doi.org/10.1007/s12633-020-00577-0