In the communication systems for satellites, microwave filters play an important role [1]. Rectangular waveguide (RW) technology has been widely used to implement high-performance filters at microwave/mm-wave applications, owing to its high-quality factor, low loss, and high-power handling capability with respect to their substrate integrated waveguide (SIW) and planar counterparts [2,3]. However, SIW and planar filters offer a low profile, a reduced size, lightweight and an easy integration of components compared to RW filters. In addition, SIW and planar filters are cheaper to manufacture from...