Analysis and synthesis with the "complete"equivalent circuit for the wide-band transformer

THE WIDE-BAND transformer is usually represented in its high- and low-end frequency response ranges by two appropriate collections of lumped-parameter network elements. The aggregate of of these network elements then constitutes low-pass and high-pass filters, respectively, and these filters may be synthesized or analyzed by standard filter techniques. The low-pass filter presents the greatest problem; it is not easy to choose from many possible equivalent circuits the one which is sufficiently complex to represent the physical transformer with reasonable accuracy and yet which is sufficiently simple to permit a tractable analysis or synthesis.