Electromagnetic properties measurements of ferromagnetic materials using microstrip

  • J. Hinojosa /
  • D. Cottevieille /
  • A. Le Mehaute /
  • L. Faucon
Journal ar
Microwave and Optical Technology Letters
  • Volumen: 33
  • Número: 3
  • Fecha: 05 May 2002
  • Páginas: 176-180
  • ISSN: 08952477
  • Source Type: Journal
  • DOI: 10.1002/mop.10269
  • Document Type: Article
A broadband technique for the simultaneous measurement of the complex permittivity and permeability of film-shaped ferromagnetic materials is presented. Complex permittivity and permeability are computed from S-parameter measurements under a constant exterior magnetic field of microstrip transmission lines used as cells. Moreover, a simple and fast technique that allows to the measurement of magnetic materials with a low permeability is presented. The measurement bench uses a vector network analyzer, a high-quality on-microstrip test fixture, and an electromagnet. Measurements in the 0.05-20 GHz range show the validity of these methods.

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