Design of Millimeter-Wave Wideband Gap Waveguide Transitions Considering Integration into the Antenna System
Paper in proceedings, 2015
Two wideband vertical transitions from inverted microstrip gap waveguide to rectangular waveguide (WR-15) for 60 GHz antenna array applications are proposed. These
transitions are aimed to interconnect the WR-15 with the gap waveguide feed-network employed to provide feeding to the radiating elements of slot/horn antenna arrays. The wideband field transformation is achieved without the need of adding a quarter-wavelength cavity backshort on a metal block placed over the transition. First, we replace this backshort by creating a cavity in the radiating layer when this is made in Substrate Integrated Waveguide (SIW) technology, and thereafter we use an air-filled pin cavity in the radiating layer. The simulated Sparameters
show that the presented transitions cover the unlicensed 60 GHz band (57-64 GHz) with good margins.
Perfect Magnetic Conductor (PMC)
Artificial Magnetic Conductor (AMC)
Substrate Integrated Waveguide