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MA: Fachverband Magnetismus
MA 20: Magnonics II
MA 20.10: Vortrag
Mittwoch, 19. März 2025, 12:00–12:15, H16
Nanoscaled Spin-Wave Frequency Selective Limiter (FSL) for 5G Technology — •Kristýna Davídková1, Khrystyna Levchenko1, Florian Bruckner1, Roman Verba2, Fabian Majcen1, Qi Wang3, Carsten Dubs4, Vincent Vlaminck5, Jan Klíma6, Michal Urbánek6, Dieter Suess1, and Andrii Chumak1 — 1University of Vienna, Austria. — 2Institute of Magnetism, Ukraine. — 3School of Physics, China. — 4INNOVENT e. V. Technologieentwicklung, Germany. — 5IMT Atlantique, France — 6CEITEC BUT, Czech Republic
Power limiters are essential devices in radio frequency communications systems to protect the input channels from large incoming signals. Nowadays-used semiconductor limiters suffer from high electronic noise and switching delays when approaching the GHz range, which is crucial for the modern generation of 5G communication technologies aiming to operate at the EU 5G high band (24.25-27.5 GHz). The proposed solution is to use ferrite-based Frequency Selective Limiters (FSLs), which maintain their efficiency at high GHz frequencies, although they have only been studied at the macroscale so far. We demonstrate a proof of concept of nanoscale FSLs based on spin-wave transmission affected by four-magnon scattering phenomena in a 97-nm-thin YIG film. Spin waves were excited and detected using coplanar waveguide transducers of the smallest feature size of 250 nm. The FSLs are tested in the frequency range up to 25 GHz, and the key parameters are extracted (power threshold, power limiting level, insertion losses, bandwidth) for different SW modes and transducer lengths.
Keywords: Frequency selective limiters (FSLs); Spin waves; Multi-magnon scattering; Yttrium Iron Garnet (YIG); Power limiting effect