Extra-activity perturbation method for the measurement of dielectric resonator materials

Erhu Ni; Yuqing Ni
June 1997
Review of Scientific Instruments;Jun97, Vol. 68 Issue 6, p2524
Academic Journal
Presents an extra-cavity perturbation method to determine the complex permittivity of a high dielectric constant materials from measurements of frequency shift and change in the Q factor of the cavity. Insertion of a sample into an evanescent guide outside the cylindrical cavity resonator; Fundamental principles and the optimum sensitivity and accuracy of the measurements.


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