Design of Millimeter-Wave Wideband Gap Waveguide Transitions Considering Integration into the Antenna System
Paper i proceeding, 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)

millimeter-wave circuits

Gap waveguide

Artificial Magnetic Conductor (AMC)


Substrate Integrated Waveguide



Astrid Algaba Brazalez

Chalmers, Signaler och system, Kommunikations- och antennsystem, Antennsystem

Eva Rajo

Universidad Carlos III de Madrid

Per-Simon Kildal

Chalmers, Signaler och system, Kommunikations- och antennsystem, Antennsystem

9th European Conference on Antennas and Propagation, EuCAP 2015, Lisbon, Portugal, 13-17 May 2015



Informations- och kommunikationsteknik


Elektroteknik och elektronik



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