ADS Design Guide for FSL

FSL device structures

Two FSL device structures are considered here. The first one is microstrip line based FSL device, where a YIG thin film is sandwiched by a signal strip and a ground plane. The second structure is CPW based FSL, where the YIG thin film is placed beneath the signal strip and two ground planes. The main difference is that for CPW-FSLs, the magnetic field distribution is not uniform, compared with MLIN-FSL case. As a result, different circuit model is needed to account for such field nonuniformity.

Modeling approach

Related publications

• H. Cui Z. Yao and Y. E. Wang, "Coupling Electromagnetic Waves to Spin Waves: A Physics-Based Nonlinear Circuit Model for Frequency-Selective Limiters," in IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 8, pp. 3221-3229, Aug. 2019, doi: 10.1109/TMTT.2019.2918517.

• Mason Fordham, Rüstü Umut Tok, Han Cui, Yuanxun Ethan Wang. “A Nonlinear 3-D Equivalent Circuit Model for Ferromagnetic RF Devices”. Government Microcircuit Applications & Critical Technology Conference (GOMACTech), 2021.

• Qian Gao, Mason Fordham, Yuanxun Ethan Wang. " A Compact Model for Frequency-Selective Limiters with Strong Field Nonuniformity". Government Microcircuit Applications & Critical Technology Conference (GOMACTech), Miami, FL, Mar. 21-24, 2022.

Design guide functions

• MLIN-FSL design guide ADS schematic files' functions:

• Sample simulation file & simulation result:

Design guide downloads & install instruction

Acknowledgement

This work is funded by DAPRA M3IC program.