Zeitschrift fur Naturforschung, Teil A (Physik, Physikalische Chemie, Kosmophysik) (Jan. 1989) vol.44A, no.1, p.75-80. 13 refs.

Higher order modes as accuracy limiting factor in permittivity measurements of high lossy fluids using transmission techniques in the GHz range.

Redhardt A, Steinhoff, HJ, Schlitter J, Neumann HJ, Hess G

Institut fur Biophysik, Ruhr-Universitat Bochum, F.R.G.

The higher order mode distortion in measuring dielectric constants on high lossy, high permittivity liquids in the GHz range is investigated by a simulation procedure as well as by experiment. For this, a homodyne method for measuring epsilon * is introduced in analogy to precision EPR-work.