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The investigation of Transition between Substrate Integrated Waveguide (SIW) And Electromagnetic Band Gap (EBGs) Waveguides and its applications

In this paper, two planar waveguides and a rounded bend is proposed, designed and implemented through a hybrid structure of substrate integrated waveguide (SIW) and electromagnetic bandgap (EBG) material. For the design of the two EBGs waveguides, a square and triangular lattice of holes are used and is situated between two metal plates. The SIW line and bend are inserted on EBG waveguide to enhance performance. The transition between SIW and EBGs waveguides is investigated. The back-to-back prototype transition is fabricated and measured. The combination EBG-SIW covers almost the whole EBG bandwidth of 6 GHz (17 %) around 35 GHz.