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Woo-Jin Byun,Bong-Su Kim,Kwang Seon Kim,Myung-Sun Song,Ki-Chan Eun,Reinhard Kulke,Olaf Kersten,Gregor Möllenbeck,Matthias Ritttweger 한국전자통신연구원 2010 ETRI Journal Vol.32 No.2
A new vertical transition between a substrate integrated waveguide in a low-temperature co-fired ceramic substrate and an air-filled standard waveguide is proposed in this paper. A rectangular cavity resonator with closely spaced metallic vias is designed to connect the substrate integrated waveguide to the standard air-filled waveguide. Physical characteristics of an air-filled WR-22 to WR-22 transition are compared with those of the proposed transition. Simulation and experiment demonstrate that the proposed transition shows a −1.3 dB insertion loss and 6.2 GHz bandwidth with a 10 dB return loss for the back-to-back module. A 40 GHz low-temperature co-fired ceramic module with the proposed vertical transition is also implemented. The implemented module is very compact, measuring 57 mm × 28 mm × 3.3 mm.