Band pass filter design using half mode substrate integrated waveguide (HMSIW) with periodically loaded F-EBG structures

Band-pass filter design based on Half Mode Substrate Integrated Waveguide (HMSIW) has been presented in this paper. The PEC surface of the HMSIW has been etched with periodic F-shaped Electromagnetic Band Gap (EBG) structures to obtain the bandpass characteristics. Single and array of three similar elements are used which effectively serves the purpose of reduced the Insertion Loss within the transmission passband. The concept is validated with parametric variations of several important EBG parameters. The design confirms the luxury to obtain pass-band at other microwave bands by simple alterations of the dimensions of the inverted F shaped EBG elements. The filter finds applications in Ku band satellite and radar operations with advantages like convenient integration, compact size, low cost and ease in fabrication.