Electrical modeling and transmission performance analysis of carbon nanotube-graphene mixed structure interconnects

This paper introduces the circuit modeling and performance analysis of carbon nanotube-graphene mixed (CGM) structure interconnects. Based on ABCD method, the transfer function of CGM structure is derived, and the 3-dB bandwidth of CGM structure is calculated. By introducing the peaking inductance technology, the 3-dB bandwidth of mixed structure is effectively improved. The effects of various parameters on the 3-dB bandwidth of interconnections are analyzed. Compared with carbon nanotube bundle (CNTB), the 3-dB bandwidth of CGM is larger than that of CNTB interconnect, which indicates that the mixed structure effectively improves the bandwidth of CNTB. In addition, by analyzing different mixed structure (e.g. CGM-1, CGM-2 & CGM-3), it was found that the 3-dB bandwidth of CGM-3 is superior to that of other mixed structures. This paper also analyzes the transmission delay of CGM, which is lower than that of Cu and CNTB. It was also found that the power consumption of CGM is lower than that of graphene.