A Scalable Model for Efficiently Designing Magnetostatic Surface Wave Transmission Lines

Zequn Zeng; Si-Ping Gao; Yongxin Guo

doi:10.1109/TMTT.2025.3562596

A Scalable Model for Efficiently Designing Magnetostatic Surface Wave Transmission Lines

Zequn Zeng, Si-Ping Gao^*, Yongxin Guo^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Abstract

A scalable model is developed for efficiently designing magnetostatic surface wave transmission lines (MSSW-TLs). The proposed model eliminates the need for iteratively solving the complex coupled Maxwell-Landau–Lifshitz-Gilbert LLG) equations and requires only one-time characterization of the yttrium iron garnet (YIG) transducer. It allows for efficient optimization of MSSW-TLs with flexibility in the length, spacing, and termination of the transducer, and it is capable of accurately predicting all four S-parameters of an MSSW-TL. More importantly, it points out the physical limit of the transmission performance of an MSSW-TL, which is instructional to MSSW-TL optimization. Two MSSW-TL prototypes were designed based on the proposed model. Good agreement between the prediction and measurement was obtained, proving the effectiveness and efficiency of the proposed modeling and design approach. © 2025 IEEE.

Original language	English
Pages (from-to)	7132-7140
Number of pages	9
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	73
Issue number	10
Online published	30 Apr 2025
DOIs	https://doi.org/10.1109/TMTT.2025.3562596
Publication status	Published - Oct 2025

Funding

This work was supported in part by the Start-up Grant for Professor (SGP)— CityU SGP, City University of Hong Kong under Grant 9380170; and in part by the Funding for Stable Support for Basic Research Projects of NDC under Grant ILF240031A24.

Research Keywords

Transducers
Mathematical models
Magnetostatics
Magnetostatic waves
Saturation magnetization
Microwave circuits
Ferrites
Propagation losses
Optimization
Microwave theory and techniques
Ferrite
magnetostatic surface wave (MSSW)
scalable model
transducer
yttrium iron garnet (YIG)

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title = "A Scalable Model for Efficiently Designing Magnetostatic Surface Wave Transmission Lines",

abstract = "A scalable model is developed for efficiently designing magnetostatic surface wave transmission lines (MSSW-TLs). The proposed model eliminates the need for iteratively solving the complex coupled Maxwell-Landau–Lifshitz-Gilbert LLG) equations and requires only one-time characterization of the yttrium iron garnet (YIG) transducer. It allows for efficient optimization of MSSW-TLs with flexibility in the length, spacing, and termination of the transducer, and it is capable of accurately predicting all four S-parameters of an MSSW-TL. More importantly, it points out the physical limit of the transmission performance of an MSSW-TL, which is instructional to MSSW-TL optimization. Two MSSW-TL prototypes were designed based on the proposed model. Good agreement between the prediction and measurement was obtained, proving the effectiveness and efficiency of the proposed modeling and design approach. {\textcopyright} 2025 IEEE. ",

keywords = "Transducers, Mathematical models, Magnetostatics, Magnetostatic waves, Saturation magnetization, Microwave circuits, Ferrites, Propagation losses, Optimization, Microwave theory and techniques, Ferrite, magnetostatic surface wave (MSSW), scalable model, transducer, yttrium iron garnet (YIG)",

author = "Zequn Zeng and Si-Ping Gao and Yongxin Guo",

year = "2025",

month = oct,

doi = "10.1109/TMTT.2025.3562596",

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TY - JOUR

T1 - A Scalable Model for Efficiently Designing Magnetostatic Surface Wave Transmission Lines

AU - Zeng, Zequn

AU - Gao, Si-Ping

AU - Guo, Yongxin

PY - 2025/10

Y1 - 2025/10

N2 - A scalable model is developed for efficiently designing magnetostatic surface wave transmission lines (MSSW-TLs). The proposed model eliminates the need for iteratively solving the complex coupled Maxwell-Landau–Lifshitz-Gilbert LLG) equations and requires only one-time characterization of the yttrium iron garnet (YIG) transducer. It allows for efficient optimization of MSSW-TLs with flexibility in the length, spacing, and termination of the transducer, and it is capable of accurately predicting all four S-parameters of an MSSW-TL. More importantly, it points out the physical limit of the transmission performance of an MSSW-TL, which is instructional to MSSW-TL optimization. Two MSSW-TL prototypes were designed based on the proposed model. Good agreement between the prediction and measurement was obtained, proving the effectiveness and efficiency of the proposed modeling and design approach. © 2025 IEEE.

AB - A scalable model is developed for efficiently designing magnetostatic surface wave transmission lines (MSSW-TLs). The proposed model eliminates the need for iteratively solving the complex coupled Maxwell-Landau–Lifshitz-Gilbert LLG) equations and requires only one-time characterization of the yttrium iron garnet (YIG) transducer. It allows for efficient optimization of MSSW-TLs with flexibility in the length, spacing, and termination of the transducer, and it is capable of accurately predicting all four S-parameters of an MSSW-TL. More importantly, it points out the physical limit of the transmission performance of an MSSW-TL, which is instructional to MSSW-TL optimization. Two MSSW-TL prototypes were designed based on the proposed model. Good agreement between the prediction and measurement was obtained, proving the effectiveness and efficiency of the proposed modeling and design approach. © 2025 IEEE.

KW - Transducers

KW - Mathematical models

KW - Magnetostatics

KW - Magnetostatic waves

KW - Saturation magnetization

KW - Microwave circuits

KW - Ferrites

KW - Propagation losses

KW - Optimization

KW - Microwave theory and techniques

KW - Ferrite

KW - magnetostatic surface wave (MSSW)

KW - scalable model

KW - transducer

KW - yttrium iron garnet (YIG)

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DO - 10.1109/TMTT.2025.3562596

M3 - RGC 21 - Publication in refereed journal

SN - 0018-9480

VL - 73

SP - 7132

EP - 7140

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 10

ER -

A Scalable Model for Efficiently Designing Magnetostatic Surface Wave Transmission Lines

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