4-output Programmable Spin Wave Logic Gate

Abdulqader Mahmoud, Frederic Vanderveken, Christoph Adelmann, Florin Ciubotaru, Said Hamdioui, Sorin Cotofana

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To bring Spin Wave (SW) based computing paradigm into practice and develop ultra low power Magnonic circuits and computation platforms, one needs basic logic gates that operate and can be cascaded within the SW domain without requiring back and forth conversion between the SW and voltage domains. To achieve this, SW gates have to possess intrinsic fanout capabilities, be input-output data representation coherent, and reconfigurable. In this paper, we address the first and the last requirements and propose a novel 4-output programmable SW logic gate. First, we introduce the gate structure and demonstrate that, by adjusting the gate output detection method, it can parallelly evaluate any 4-element subset of the 2-input Boolean function set {(N)AND, (N)OR, and X(N)OR}. Furthermore, we adjust the structure such that all its 4 outputs produce SWs with the same energy and demonstrate that it can evaluate Boolean function sets while providing fanout capabilities ranging from 1 to 4. We validate our approach by instantiating and simulating different gate configurations such as 4-output AND/OR, 4-output XOR/XNOR, output energy balanced 4-output AND/OR, and output energy balanced 4-output XOR/XNOR by means of Object Oriented Micromagnetic Framework (OOMMF) simulations. Finally, we evaluate the performance of our proposal in terms of delay and energy consumption and compare it against existing state-of-the-art SW and 16 nm CMOS counterparts. The results indicate that for the same functionality, our approach provides 3× and 16× energy reduction, when compared with conventional SW and 16 nm CMOS implementations, respectively.

Original languageEnglish
Title of host publication2020 IEEE 38th International Conference on Computer Design (ICCD)
Subtitle of host publicationProceedings
EditorsJ. Guerrero
Place of PublicationPiscataway
Number of pages4
ISBN (Electronic)978-1-7281-9710-4
ISBN (Print)978-1-7281-9711-1
Publication statusPublished - 2020
Event38th IEEE International Conference on Computer Design, ICCD 2020 - Hartford, United States
Duration: 18 Oct 202021 Oct 2020


Conference38th IEEE International Conference on Computer Design, ICCD 2020
CountryUnited States


  • Energy
  • Programmable Logic Gate
  • Spin-wave

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