A full adder implementation using SET based linear threshold gates

In this paper, we investigate single electron tunneling (SET) devices from the logic design perspective, using the SET tunnel junction´s ability to control the transport of individual electrons. In particular, we present the implementation of a full adder using SET threshold gates. First, we augment the threshold gates with an active buffer in order to overcome feedback effects which can appear in passive SET networks. Second, we derive the circuit parameters for buffered SET threshold gates, and present the simulation results. Finally, we utilize the buffered threshold gates to build a full adder circuit, and verify the behavior of the resulting circuit via simulation.