Frequency Response and Eddy Current Power Loss in Magneto-Mechanical Transmitters

Research output: Contribution to journalArticlepeer-review


Magneto-Mechanical transmitters offer a compact and low-power solution for the generation of ultralow-frequency (ULF) magnetic signals for through-ground and through-seawater communications. Resonant arrays of smaller magneto-mechanical transmitters are particularly interesting in this context as the physical scaling laws allow for the increase of operating frequency and reduce the power requirements for ULF signal generation. In this work, we introduce a generalized model for accurate prediction of frequency and mode shape in generalized magneto-mechanical resonator arrays (MMRAs) that account for near-field magnetic interactions as well as magnetically induced nonlinearity. Using experiments, we demonstrate that our predictive capability is significantly improved compared against simplified dipole approximations. We additionally model the eddy current losses internal to the array and find that they are in agreement with experimental observations.

Original languageEnglish (US)
Pages (from-to)3642-3653
Number of pages12
JournalIEEE Transactions on Antennas and Propagation
Issue number4
StatePublished - Apr 1 2023


  • Eddy current loss
  • magnetic modulators
  • magneto-mechanical systems
  • nonlinear dynamical systems
  • ultralow-frequency (ULF) transmitters
  • wireless communication

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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