Abstract
Having multi-output logic gates saves much energy because the same
structure can be used to feed multiple inputs of next stage gates
simultaneously. This paper proposes novel triangle shape fanout of 2
spin wave Majority and XOR gates; the Majority gate is achieved by phase
detection, whereas the XOR gate is achieved by threshold detection. The
proposed logic gates are validated by means of micromagnetic
simulations. Furthermore, the energy and delay are estimated for the
proposed structures and compared with the state-of-the-art spin wave
logic gates, and 16nm and 7nm CMOS. The results demonstrate that the
proposed structures provide energy reduction of 25%-50% in comparison
to the other 2-output spin-wave devices while having the same delay, and
energy reduction between 43x and 0.8x when compared to the 16nm and 7nm
CMOS while having delay overhead between 11x and 40x.