Magnetless Circulators Based on Synthetic Angular-Momentum Bias: Recent advances and applications

  title={Magnetless Circulators Based on Synthetic Angular-Momentum Bias: Recent advances and applications},
  author={Ahmed Kord and Andrea Al{\'u}},
  journal={IEEE Antennas and Propagation Magazine},
  • Ahmed Kord, A. Alú
  • Published 6 December 2020
  • Physics
  • IEEE Antennas and Propagation Magazine
In this article, we discuss recent progress in magnet-free nonreciprocal structures based on a synthetic form of angular-momentum bias imparted via spatiotemporal modulation. We examine how such components can support metrics of performance comparable to traditional magnetic-biased ferrite devices, while at the same time offering distinct advantages in terms of reduced size, weight, and cost due to the elimination of magnetic bias. We further provide an outlook on potential applications and… 


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