The complementary metal oxide semiconductor technology, CMOS, is reaching its physical limitations, as the transistors’ feature size decreases. A promising alternative is the nanomagnetic logic technology (NML), a paradigm of field-coupled nanocomputing. This technology applies single domain nanomagnets to implement digital logic with switching energies that are orders of magnitude lower than a CMOS transistor due to the complete absence of static energy dissipation. When designing nanomagnetic circuitry, several challenges arise, such as the design of a clocking system able to avoid signal disruption due to the thermal noise effect. In this paper, we compare four NML clocking schemes: BANCS, USE, RES, and 2DDWave by analyzing scalability and area overhead of combinational and sequential circuits.

随着晶体管特征尺寸的减小，互补金属氧化物半导体技术CMOS已达到其物理极限。一种有希望的替代方法是纳米磁逻辑技术（NML），这是场耦合纳米计算的范例。由于完全没有静态能量耗散，该技术应用单域纳米磁铁来实现数字逻辑，其开关能量比CMOS晶体管低几个数量级。当设计纳米磁性电路时，出现了一些挑战，例如设计时钟系统，能够避免由于热噪声效应而引起的信号中断。在本文中，我们通过分析组合电路和时序电路的可扩展性和面积开销，比较了四种NML时钟方案：BANCS，USE，RES和2DDWave。