A Fast Technique to Calculate the First Physical Modes of Conductors over a Wide Frequency Range

Using the techniques described in this paper it is possible to calculate the physical modes of a conductor over a wide frequency range quickly even for dispersive area. An estimation of the wave number against the frequency is essential. A set of initial, frequency dependent, linear equations extracted from finite differences is constructed, simplified for better performance and solved for a few frequencies. By means of these supporting points it is possible to compute all other frequencies in between very fast