Synthesis of coupled strip lines with heterogeneous cross-section

Authors: Loschilov A. G., Chin T. T., Malyutin N. D., Malyutin G. A.

Annotation: Using the example of coupled strip lines with horizontally and vertically arranged strip conductors, the solution of the inverse problem of finding relative permittivity according to a given ratio of phase velocities of in-phase and antiphase waves propagating in the lines is shown. Per unite capacitances are defined as the sum of partial capacitances in the selected subdomains of the strip structure, in which the accumulated energy of the electric field was calculated. Examples of the synthesis of coupled line structures with a given ratio of phase velocities are shown.

Keywords: coupled strip lines, horizontal and vertical position of the strips, phase velocities difference of synphase and antiphase waves, finding the permittivities of the substrates