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Modeling Coplanar Waveguide Structrues Constructed of Ferromagnetic Metal



Nicholas Cramer, Dave K. Walker


We fabricate coplanar waveguide transmission lines with thin-film Feo.2Nio.8 conductors. These lines demonstrate a power attenuation of 10 dB/cm at ferromagnetic resonance frequencies of 5 to 10 GHz for applied magnetic fields less than 80 kA/m (1 kOe). In addition, the phase of the transmitted wave can be tuned by about 20 degrees/cm by adjusting an applied magnetic field. We present a simple model for the complex reflected and transmitted waves as a function of material characteristics, geometry, and applied field. We model the skin effect influence on the transmission line circuit parameters, including the line impedance and propagation constant, by considering the full effects of the conductor permeability and conductivity.
Proceedings Title
Tech. Dig., IEEE MTT-S International Microwave Symposium
Conference Dates
May 20-25, 2001
Conference Location
Phoenix, AZ


coplanar waveguide, ferrimagnet, ferromagnet, thin-film ferromagnet


Cramer, N. and Walker, D. (2001), Modeling Coplanar Waveguide Structrues Constructed of Ferromagnetic Metal, Tech. Dig., IEEE MTT-S International Microwave Symposium, Phoenix, AZ (Accessed June 20, 2024)


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Created April 30, 2001, Updated October 12, 2021