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Measurement of Dielectric Materials Using a Cutoff Circuiar-Waveguide Cavity (Short Papers)

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2 Author(s)

A technique is presented for accurately determinhg the dielectric constant of microwave materials. The concept is to resonate a cutoff circular-waveguide cavity by inserting the dielectric-disk sample. Unlike most dielectric measurement techniques which rely on perturbation methods, this one determines the dielectric constant from the absolute measurement of the resonant frequency. Also, the use of a cutoff cavity prevents false dielectric constant readings by eliminating spurious resonances.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:20 ,  Issue: 3 )