Open-ended metallized ceramic coaxial probe for high-temperature dielectric properties measurements

A metallized ceramic coaxial probe has been developed for high temperature complex permittivity measurements. The probe is made of alumina and metallized with a 3.0-mil-thick layer of moly-manganese, and a 0.5-mil-thick protective coating of nickel plating. It is shown that based on carrying out the network analysis calibration procedure up to 1000/spl deg/C, and on actual dielectric properties measurements, the probe provides accurate dielectric measurements over a broad frequency range (500 MHz to 3 GHz) and for temperatures up to 1000/spl deg/C. An uncertainty analysis based on two different calibration techniques was also given to help quantify possible measurement errors.

[1]  Sharon Joyce Hamilton.  Microwave oscillator circuits , 1978 .

[2]  M. Iskander,et al.  FDTD modeling of realistic microwave sintering experiments , 1994, Proceedings of IEEE Antennas and Propagation Society International Symposium and URSI National Radio Science Meeting.

[3]  E. C. Burdette,et al.  In Vivo Probe Measurement Technique for Determining Dielectric Properties at VHF through Microwave Frequencies , 1980 .

[4]  E. Tanabe,et al.  A nondestructive method for measuring the complex permittivity of dielectric materials at microwave frequencies using an open transmission line resonator , 1976, IEEE Transactions on Instrumentation and Measurement.

[5]  Kenneth R. Foster,et al.  Noninvasive electrical characterization of materials at microwave frequencies using an open-ended coaxial line: test of an improved calibration technique , 1990 .

[6]  M. Iskander,et al.  Time- and Frequency-Domain Techniques for Measuring the Dielectric Properties of Rocks: A Review , 1983 .

[7]  C. Papas,et al.  Theory of the Circular Diffraction Antenna , 1951 .

[8]  M. Iskander,et al.  High Temperature Broadband Dielectric Properties Measurement Techniques , 1992 .

[9]  Daniël De Zutter,et al.  Measurement of low-permittivity materials based on a spectral-domain analysis for the open-ended coaxial probe , 1993 .

[10]  David V Blackham,et al.  Calibration Method for Open-Ended Coaxial Probe/Nector Network Analyzer System , 1992 .

[11]  R. Hutcheon,et al.  RF and Microwave Dielectric Measurements to 1400°C and Dielectric Loss Mechanisms , 1992 .

[12]  P. Domich,et al.  Analysis of an open-ended coaxial probe with lift-off for nondestructive testing , 1994 .

[13]  Kun-mu Chen,et al.  Determination of electromagnetic properties of materials using flanged open-ended coaxial probe-full-wave analysis , 1995 .