Method of making a multi-layer controllable impedance transition device for microwaves/millimeter waves

摘要

A composite structure including stacked layers of dielectric material having a center conductor in the form of a cylindrical via which is surrounded by an annular dielectric region and an outer ground plane comprised of contiguous pairs of generally circular ground plane segments where each pair of ground plane segments are separated by a pair of spaces or gaps therebetween and wherein the gaps of adjoining layers are mutually oriented by a predetermined angle of rotation, preferably 90 DEG .