Journal of Microwave Power and Electromagnetic Energy (JMPEE)
TITLE	A Computer Program for Short-Circuited Waveguide Dielectric-Properties Measurements on High- or Low-Loss Materials [PDF]
AUTHORS	S.O. Nelson, C. W. Schlaphoff and L. E. Stetson 1973 8 1 13-22
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Abstract A general computer program is described for precisely calculating dielectric properties of high- or low-loss materials from short-circuited coaxial, cylindrical, or rectangular waveguide measurements on samples in contact with the short-circuit termination. Slotted-section measurements are corrected for the influence of the slot on the propagation constant of the waveguide. Corrections are included for wall losses in the waveguide, and differences between measurements in vacuum and in air are also taken into account. Three sets of possible values for the relative dielectric constant and loss factor, loss tangent, and conductivity are printed out corresponding to three solutions of the complex transcendental equation. Data for up to fifty samples are stored, and a summary table includes the set of dielectric properties corresponding most closely to the estimated dielectric constant for each sample