  By their very nature, voltage/current excited Spin Waves (SWs) propagate
through waveguides without consuming noticeable power. If SW excitation is
performed by the continuous application of voltages/currents to the input,
which is usually the case, the overall energy consumption is determined by the
transducer power and the circuit critical path delay, which leads to high
energy consumption because of SWs slowness. However, if transducers are
operated in pulses the energy becomes circuit delay independent and it is
mainly determined by the transducer power and delay, thus pulse operation
should be targeted. In this paper, we utilize a 3-input Majority gate (MAJ) to
investigate the Continuous Mode Operation (CMO), and Pulse Mode Operation
(PMO). Moreover, we validate CMO and PMO 3-input Majority gate by means of
micromagnetic simulations. Furthermore, we evaluate and compare the CMO and PMO
Majority gate implementations in term of energy. The results indicate that PMO
diminishes MAJ gate energy consumption by a factor of 18. In addition, we
describe how PMO can open the road towards the utilization of the Wave
Pipelining (WP) concept in SW circuits. We validate the WP concept by means of
micromagnetic simulations and we evaluate its implications in term of
throughput. Our evaluation indicates that for a circuit formed by four cascaded
MAJ gates WP increases the throughput by 3.6x.
