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Time-domain measurement of the electromagnetic properties of materials

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1 Author(s)
Courtney, C.C. ; Voss Sci., Albuquerque, NM, USA

A time-domain measurement and data-reduction technique is presented that can yield the broad-band frequency-dependent values of a sample material's electrical properties (complex permittivity and permeability). The method uses the material's response to the spectral content of a fast rise-time pulse to determine the frequency dependence of the complex relative permittivity (ετ) and permeability (μr). The measurement procedure and data-reduction scheme are described, and the derived material values for a sample material are given. The advantages of this method include a potentially lower equipment cost and the avoidance of awkward calibration procedures that are inherent in frequency-domain methods. Though the material examined was nonmagnetic, the procedure is general and rigorous (for low-loss materials, low dispersion over the bandwidth) for the determination of both electrical and magnetic properties

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:46 ,  Issue: 5 )