Patent ID: 6366096
Filing Date: 2002-04-02
Classification: G01N,G01R

Abstract:
An apparatus for determining absolute values of penetration depth and surface resistance of a sample at microwave frequencies, comprising:a resonant structure formed of a pair of substantially identical samples positioned in substantially parallel relationship each with respect to the other and sandwiching a dielectric spacer therebetween, displacement means adapted for displacing at least one of said samples with respect to another one of said samples for varying a thickness of said dielectric spacer disposed therebetween, measuring means for measuring the resonant frequency and the quality factor of said resonant structure versus said variable thickness of said dielectric spacer, and processing means coupled to said measuring means for processing said measured resonance frequencies and the quality factors versus said variable thickness of said dielectric spacer, said processing means including means for extracting absolute values of penetration depth and surface resistance for said samples, each of said means for extracting being correlated with a type of said samples.