ArticleMicrosystems & nanoengineering2026
Spatially tailored spin wave excitation for spurious-free, low-loss magnetostatic wave filters with ultra-wide frequency tunability.
Article in Microsystems & nanoengineering, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Spin-wave band-pass filters for 6G communication.Nature · 2026Article
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Authors and funding
5 authors.
Funding
Abstract
Yttrium iron garnet (YIG) magnetostatic wave (MSW) radio frequency cavity filters are promising for sixth-generation (6G) communication systems due to their wide frequency tunability. However, the presence of severe spurious modes arising from the finite cavity dimensions severely degrades the filter performance. We present a half-cone transducer that spatially tailors spin wave excitation to selectively enhance the primary cavity modes comprising the YIG-based MSW filter passband, while strongly suppressing the undesired spurious modes. Theoretical analysis, numerical simulations and experiments verify the effectiveness of the spatially tailored technique. We utilize the half-cone transducer to demonstrate a spurious-free, single-cavity half-cone MSW filter (HC-MSWF) with an insertion loss (IL) of 2.4-3.2 dB over a frequency tuning range of 6.3-16.8 GHz. Extending our study, we further demonstrate a spurious-free, dual-cavity HC-MSWF with an unprecedented tuning range of 21.7 GHz (9.8-31.5 GHz) while maintaining a low IL of 2.9-3.8 dB. This significant advance in performance will enable highly reconfigurable and robust 6G networks.
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