Multilayer Substrate Integrated Waveguide Directional Coupler

In this paper a new directional multilayer coupler based on SIW technology is presented. The proposed MSIW directional coupler work for the operation frequency 5.8 GHz. Ansoft HFSS simulation software is used. The tapered line is used as transition between MSIW and microstrip-line for easy integration. These structures present a good performance such a good isolation <-34 dB and coupling of -06.37 dB. He presents many advantages of convenient integration, compact size, low cost, mass-producibility and ease in fabrication. Simulated results are presented and discussed