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Characterizing the Linearity of Magnonic Devices for Radio-Frequency Applications

Robert Erdelyi, Adam Papp Levente Maucha, Philipp Pirro, Matthias Wagner, Dieter Ferling, Johannes Greil, Markus Becherer, Gyorgy Csaba

Abstract

Magnonic devices exhibit strong amplitude-dependent nonlinearities, which are detrimental to signal integrity in radio-frequency (RF) signal processing applications. They also limit the power that such magnonic devices may process. In this paper we use micromagnetic simulations to characterize the nonlinearity of magnonic RF devices by investigating their intermodulation distortion (specifically third-order intermodulation products, IP$_3$ ). The IP$_3$ is a commonly used metric for RF components in communication systems and allows direct comparison with state-of-the-art electrical counterparts.

Characterizing the Linearity of Magnonic Devices for Radio-Frequency Applications

Abstract

Magnonic devices exhibit strong amplitude-dependent nonlinearities, which are detrimental to signal integrity in radio-frequency (RF) signal processing applications. They also limit the power that such magnonic devices may process. In this paper we use micromagnetic simulations to characterize the nonlinearity of magnonic RF devices by investigating their intermodulation distortion (specifically third-order intermodulation products, IP ). The IP is a commonly used metric for RF components in communication systems and allows direct comparison with state-of-the-art electrical counterparts.

Paper Structure

This paper contains 7 sections, 2 equations, 3 figures.

Table of Contents

  1. Introduction
  2. Defining intermodulation products
  3. Methods
  4. Results and discussion
  5. Quantifying the linearity of magnonic conduits
  6. Scaling rules and comparison with electronic counterparts
  7. Conclusion

Figures (3)

  • Figure 1: Third-order intermodulation products caused by double-tone sine wave stimuli.
  • Figure 2: Schematic of a standard two-port magnonic system composed of a ferromagnetic thin film, an input antenna, and an output antenna.
  • Figure 3: Fundamental response and third order intermodulation product 15 $\mathrm{\mu m}$ far from the microstrip antenna in forward volume mode. Spin waves are excited in a 500 nm thick YIG layer.