10?GHz bandstop microstrip filter using excitation of magnetostatic surface wave in a patterned Ni78Fe22 ferromagnetic film

Journal article (2006)

Authors

M. Vroubel

Y. Zhuang

B. Rejaei

J.N. Burghartz

Faculty

Electrical Engineering, Mathematics and Computer Science () (TU Delft)

DOI: https://doi.org/doi:10.1063/1.2172893

Iron alloys Magnetic thin films Ferromagnetic materials Nickel alloys Microwave filters Microstrip filters Band-stop filters Magnetostatic surface waves

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Published Date

24-04-2006

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Source:

Journal of Applied Physics, 99 (8), 2006

Faculty

Electrical Engineering, Mathematics and Computer Science

Abstract

Various microstrips with a ferromagnetic core were designed and fabricated on a silicon substrate. The core was formed by a 0.5-?m-thick Ni78Fe22 film, patterned into rectangular prisms. Measurement results for attenuation constant versus frequency show a peak value of ? 50?dB/cm around 10?GHz. Electromagnetic simulations show that the attenuation observed is due to the energy exchange between the quasi-TEM mode of the microstrip and magnetostatic surface modes excited in the direction perpendicular to the signal line.

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