Figure 19. (a) CNTFET based CO (b) symbol used for CNTFET
Figure 19 shows a 32nm CNTFET based integer order CO. Keeping all other parameters same and just varying the inductor values, the oscillation frequency increases from 1.3GHz and 13.11 GHz for L=100p and L=1p respectively. This can be validated from the bode plots for both the inductor values individually, as shown in Figure 20. Compared to its MOS integer topology, an increase in oscillation frequency is observed in it. The oscillation frequencies achieved for the proposed integer order CNTFET based CO for L=100pH and L=1pH, with C1=C2=0.3n are 1.3GHz and 13.11 GHz respectively.