Design and Analysis of Microwave Filters for Satellite Communication

Designing of a filter that satisfies the required criterion of lowest insertion loss and highest return loss is desirable. There are several methods of designing a filter such as using Triple mode resonator, Micro strip quarter-wave resonator, stub-loaded resonator and Substrate Integrated Waveguide (SIW). In addition with the specification, reduced size and cost are also desirable factor in the designing of filter. Substrate Integrated Waveguides (SIWs) are planar structures which are fabricated by using two periodic rows of metallic cylindrical slots implanted in a dielectric substrate that electrically unite both parallel conducting plates Substrate integrated waveguide is a type of dielectric filled waveguide SIW structures maintain most of the benefits of classical metallic waveguides. It has high Q- factor, better capacity to handle the power with better electrical shielding as applies to classical waveguide.