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MEASUREMENT OF DIELECTRIC CONSTANT AND LOSS FACTOR OF THE DIELECTRIC MATERIAL AT MICROWAVE FREQUENCIES

2007; Volume: 69; Linguagem: Inglês

10.2528/pier06111204

1559-8985

Ashok Kumar, Ghanshyam Singh,

Advanced Antenna and Metasurface Technologies

A new technique to evaluate the dielectric constant and loss factor of a homogeneous dielectric material using rectangular shaped perturb cavity has been developed.The values of S-parameters are measured experimentally by placing the sample in the center of the cavity resonator.Sample under test is fabricated in the form of a cylinder.The real and imaginary part of the permittivity can be then calculated from the shift in the resonance frequency and Q-factor.The results of a Teflon sample are also tabulated.