Design of a substrate integrated waveguide bandpass filter using in microwave communication systems

Substrate-integrated waveguide (SIW) which can be seamlessly integrated with planar circuits and more conveniently fabricated by normal PCB with low cost catches more and more scholars´ attenuations and becomes a research hotspot in resent years. This paper presents a SIW bandpass filter designing steps with rectangular waveguide resonator design method, that initial configuration parameters speed up the optimization process. There are good agreements between the experimental results and simulations.