High-Performance Resonator Based on Multiwalled Carbon Nanotube (MWCNT)

A half-wavelength multiwalled carbon nanotube (MWCNT) microstrip resonator is proposed and analyzed in this paper. Its resonant frequency, as well as the corresponding unloaded Q-factors, is predicted by using the multiconductor transmission-line (MTL) model and the equivalent single conductor (ESC) model. The MTL model provides an accurate solution for both the resonant frequency and Q-factors. Although the resonant frequency can be captured approximately with the ESC model, the calculated Q-factors are with low accuracy. By properly selecting the geometric dimensions according to the curves obtained with the MTL model, MWCNT resonators can be designed easily for a specific resonant frequency. Further, the radius-dependent characteristic of temperature drift of the resonator is explored. The superior performance and potential applications of the MWCNT resonator are illustrated by numerical results.