A Simple Graphical User Interface Based Program to Calculate SIW Effective Width

This paper presents a graphical user interface (GUI) based program used to efficiently calculate the effective width of single and double via row Substrate Integrated Waveguide (SIW) structures. Based on transmission line theory, an expression to calculate SIW effective width in double via row structures is deduced. A simple program using the physical parameters and substrate properties to calculate electrical parameters of the required structure. Moreover, design curves are generated to help the designer to investigate the structure characteristics without falling into large computational job. Two case studies of Double Via Row (DVR) SIW structures are simulated, fabricated and measured to verify the program calculations.