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arXiv · 1905.03006

Nanoscale spin-wave wake-up receiver

Qi Wang·Thomas Brächer·Morteza Mohseni·Burkard Hillebrands·Vitaliy I. Vasyuchka·Andrii V. Chumak·Philipp Pirro
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Abstract

We present the concept of a passive spin-wave device which is able to distinguish different radio-frequency pulse trains and validate its functionality using micromagnetic simulations. The information is coded in the phase of the individual pulses which are transformed into spin-wave packets. The device splits every incoming packet into two arms, one of which is coupled to a magnonic ring which introduces a well-defined time delay and phase shift. Since the time delay is matched to the pulse repetition rate, adjacent packets interfere in a combiner which makes it possible to distinguish simple pulse train patterns by the read-out of the time-integrated spin-wave intensity in the output. Due to its passive construction, this device may serve as an energy-efficient wake-up receiver used to activate the main receiver circuit in power critical IoT applications.

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Qi Wang, Thomas Brächer, Morteza Mohseni, Burkard Hillebrands, Vitaliy I. Vasyuchka, Andrii V. Chumak, Philipp Pirro. 2019-05-08. Nanoscale spin-wave wake-up receiver. https://doi.org/10.1063/1.5109623

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