Wideband HMSIW Band Pass Filter design using H-shaped Periodic Structures

Design of half mode substrate integrated waveguide (HMSIW) wideband band pass filter planer structure is presented in this paper. Three H-shaped periodic electronic band gap structures are engraved over the top conducting layer in order to achieve attenuation of higher frequencies. Several major parameters have been studied and presented in detail. This technique is used to achieve insertion loss < 0.9dB over the entire pass band. Further more significant attenuation at the stop band frequencies (≈ 30dB) is observed. The filter is designed covering microwave C-band and X-band radar and satellite systems.