The Determination of Impedance with a Double-Slug Transformer

Formulas are derived and techniques given by means of which impedance measurements can be made by the use of a double-slug transformer. The required parameters are the length, spacing, position, and "effective" dielectric constant of the slugs, and the wavelength. A means for the experimental determination of the "effective" dielectric constant is described. The only quantitative measurements required are of length. A qualitative recognition of the electrically matched condition is needed.