Substrate integrated nonradiative dielectric guide

The substrate integrated waveguide (SIW) technology is a challenging candidate for the expansion of microwave and millimeter-wave circuit and systems. It belongs to the family of substrate integrated circuits (sICs). Most of the merits of classical metallic waveguide such as high Q factor, high power handling capability has been carried out by SIW technology. It has been investigated that Substrate integrated nonradiative dielectric (SINRD) guide is one advance tread ahead in the progress of substrate integrated circuits (SICs). Minimization of loss and cost effective circuit and systems development at millimeter wave frequencies are the fundamental application of nonradiative dielectric (NRD) guide. For planar microwave and millimeter wave circuits, unfortunately it has been very difficult to achieve a proper lamination by NRD guide technique. Therefore SIC technique has been adopted for cost effective design, implementation and fabrication of NRD guide with planar circuit approach. This paper reviews the advantages of SINRD over NRD as well as hybrid planar/NRD guide technique for microwave, millimeter-wave applications. Simultaneously an overview of characterizing SINRD by recently adopted Wave Concept Iterative Procedure (WCIP) method has been discussed.