B. Geib et al., CALCULATION OF SCATTERING PARAMETERS BY ORTHOGONAL EXPANSION AND FINITE INTEGRATION METHOD, International journal of numerical modelling, 7(6), 1994, pp. 377-398
Field computations by mathematical and numerical methods are presented
in the time and frequency domain. The techniques used are discretizat
ion and modal expansion. The effects of modelling and frequency range
on the accuracy and calculation requirements are investigated and disc
ussed. By way of application, several results of RF-filter designs are
presented, where these methods have been implemented in CAD programs.