Dynamic Threshold Control and Higher-Order Processes for Magnetics Based Microwave Devices

Aneesh Venugopal, R. H. Victora

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


We report three important results in this work. Firstly, we have demonstrated dynamic control of the nonlinearity threshold for the first time using the field-intensity of a secondary signal. Traditional approaches to controlling the threshold field intensity require replacing the magnetic sample and therefore are not dynamic. Secondly, we have described the effects of the higherorder magnon scattering processes on properties of interest like the magnetic-susceptibility-important for magnetics-based RF devices. Finally, this work features the first micromagnetics-based demonstration of microwave-induced magnetic hysteresis. The resulting bistability is interesting not just from a physics perspective but also for potential applications such as switches and memories. These results hold important implications for all the magnetics-based RF devices like Frequency Selective Limiters (FSLs), Signal-to-Noise-ratio Enhancers (SNEs), etc. Analytical explanations of these phenomena have also been provided, which have been verified using rigorous micromagnetic simulations.

Original languageEnglish (US)
Title of host publication2021 IEEE MTT-S International Microwave Symposium, IMS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9781665403078
StatePublished - Jun 7 2021
Event2021 IEEE MTT-S International Microwave Symposium, IMS 2021 - Virtual, Atlanta, United States
Duration: Jun 7 2021Jun 25 2021

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X


Conference2021 IEEE MTT-S International Microwave Symposium, IMS 2021
Country/TerritoryUnited States
CityVirtual, Atlanta

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This work was supported by the U.S. Defense Advanced Research Projects Agency (DARPA) under Grant W911NF-17-1-0100. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by NSF grant number ACI-1548562. XSEDE GPU P100 nodes at Comet and Bridges were used through the start-up allocation TG-ENG180002 and research allocation TG-ECS200001. The authors thank the Early User Program (EUP) at SDSC Expanse for V100 GPU nodes and other computational and storage resources. The authors also acknowledge the Minnesota Supercomputing Institute (MSI) at the University of Minnesota for providing resources that contributed to the research results reported within this paper.

Publisher Copyright:
© 2021 IEEE.


  • ferrite films
  • ferromagnetic resonance
  • frequency selective limiters
  • hysteresis
  • magnonics
  • microwave magnetics
  • nonlinear magnetics
  • parametric effects


Dive into the research topics of 'Dynamic Threshold Control and Higher-Order Processes for Magnetics Based Microwave Devices'. Together they form a unique fingerprint.

Cite this