No abstract

No abstract

No abstract

On-chip inductive effects are becoming predominant in deep submicron (DSM) interconnects due to increasing clock speeds, circuit complexity and decreasing interconnect lengths. Inductance causes noise in the signal waveforms, which can adversely affect the performance of the circuit and signal integrity. The traditional analysis of crosstalk in a transmission line begins with a lossless LC representation, yielding a wave equation governing the system response. This paper proposes a difference model approach to derive crosstalk in the transform domain. A closed form solution for crosstalk is obtained by incorporating initial conditions using difference model approach for distributed RLC interconnects. Simulation results show that the effect of inductive coupling for long interconnects is significant but is almost negligible for local interconnects. It is also shown that when inductance is neglected, the proposed model reduces to a lumped RC model. Also, the analytical model response agrees very well that obtained with SPICE. All the experiments have been carried out for 90nm technology node using Cadence's Dynamic Circuit Simulator SPECTRE c .

With the advent of nanotechnology, transistors are getting smaller and growing in number according to Moore's Law. With this, the issue of heat dissipation is becoming of greater concern to researchers as the transistor heat dissipation reaches the Landauer limit. Reversible logic is predicted to be an alternative to conventional computing due to lesser energy dissipation and exponentially faster problem-solving capacity. This paper introduces the design of a reversible ripple-carry adder using a mix of the well-known NCV library and the recently introduced NCV-|v1 library, with the assumption of a four-level quantum system. The results for the proposed adder are compared with previous ripple-carry adder designs. It then explores the design of a cost-optimized reversible ALU by modifying the above adder. Finally, a comparison of the proposed ALU is made with one of the latest reversible ALU designs.