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Hexagonal boron nitride intercalated multilayer grapheme (hBN-IMLG) promises one of the potential materials for high performance tunable passive components in terahertz (THz) band, due to its good electrical properties and impressive tunability with electrostatic biasing. In this paper, the high-frequency characteristics of the hBN-IMLG-based structure and tunable THz resonator are systematically investigated with the multiconductor transmission line (MTL) model. The MTL model is employed to calculate the resonant frequency, unloaded Q-factor and to investigate the tunable characteristics of the THz resonator. Simulated results indicate that by applying a biasing voltage of 0.8 V, the THz resonator based on the experimentally achievable hBN-IMLG parameters can provide a tuning ratio up to 4.74% with the Q-factor larger than 20. By properly selecting the geometry of resonator and the electrical parameters of graphene, a large tuning ratio up to 21% can be realized. There is a tradeoff between the Q-factor and the tuning ratio.

High-Frequency Analysis of Intercalated Multilayer Graphene (IMLG) and Implication for Tunable Terahertz Resonator Design