Nanoscaled Spin-Wave Frequency Selective Limiter (FSL) for 5G Technology

Autor(en)

Kristyna Davidková, Khrystyna Levchenko, Florian Bruckner, Roman Verba, Fabian Majcen, Qi Wang, Carsten Dubs, Vincent Vlaminck, Jan Klima, Michal Urbánek, Dieter Suess, Andrii Chumak

Abstrakt

Power limiters are essential devices in modern radio frequency (RF) communications systems to protect highly sensitive 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. In this study, we demonstrate a proof of concept of nanoscale FSLs. The devices are based on spin-wave transmission affected by four-magnon scattering phenomena in a 97-nm-thin Yttrium Iron Garnet (YIG) film. Spin waves were excited and detected using coplanar waveguide (CPW) 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 spin-wave modes and transducer lengths. An analytical theory has been formulated to describe the fundamental physical processes, and a numerical model has been developed to quantitatively describe the insertion losses and power characteristics of the FSLs. Additionally, the perspective of the spin-wave devices is discussed, including the possibility of simultaneously integrating three devices into one: a frequency-selective limiter, an RF filter, and a delay line, allowing for more efficient use of space and energy.

Organisation(en)

Nanomagnetismus und Magnonik, Physik Funktioneller Materialien

Externe Organisation(en)

National Academy of Sciences of Ukraine (NASU), Institute of Magnetism, Huazhong University of Science and Technology, Brno University of Technology, Innovent e.V. Technologieentwicklung Jena, Central European Institute of Technology (CEITEC)

Journal

Physical Review Applied

Anzahl der Seiten

14

ISSN

2331-7019

Publikationsdatum

01-2025

Peer-reviewed

Ja

ÖFOS 2012

103017 Magnetismus

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/ff4059ec-6569-459a-a38f-081be84730ee