The complex permeability of thin round wires is measured with a coaxial system at half-wavelength resonance, using surface impedance and low-loss transmission line concepts. A steel wire is measured over the band 300 MHz-3 GHz. The results compare well to measurements made early in the last century.
This paper demonstrates the need for care with some EMI problems present in even simple low-frequency (<1 MHz) measurements. Two experiments on cable crosstalk, found in the IEEE EMC Educational Manual, are used. Predictions are made from field theory, and compared to results from a series of measurement setups. Although the setups appear similar, it is found that unwanted coupling between the experiment and the measurement equipment influences the results
A transmission line above both an ideal and a lossy ground is illuminated by a plane wave, while its terminations are varied. The intention of this study, for EMI purposes, is to explore the minimisation of power induced in the loads, both by simulation and measurement. The simulations are performed in the time domain and the frequency domain, while measurements are made in the frequency domain with a network analyser. Great care is needed for the measurement procedures