Quasi-static modelling of carbon nanotube interconnects for gigahertz applications

Quasi-static numerical analysis of carbon nanotube (CNT) interconnects using meshless method is presented. Reproducing kernel particle method (RKPM) approach - a meshless technique is more efficient as compared with other regular discretisation approaches because of its adaptive nature. Numerical results for characteristic impedances (Zo) of CNT interconnects obtained using quasi-static capacitance are presented. Validation is done by comparing the obtained results with Luttinger liquid theory model and good agreement is obtained. The radio frequency performance of the CNT interconnects is completed using Agilent ADS with the quasi-static parameters obtained through RKPM. The simulation results in a return loss of -5.25-dB for a single CNT and -10.64-dB for CNT bundles accounting a power loss of 8.67- making it suitable for gigahertz applications. CNT bundles are the preferred candidates as interconnects to reduce the power loss in the circuit.