Design of Millimeter-Wave Wideband Gap Waveguide Transitions Considering Integration into the Antenna System
Paper in 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, Signals and Systems, Communication, Antennas and Optical Networks

Eva Rajo

Universidad Carlos III de Madrid

Per-Simon Kildal

Chalmers, Signals and Systems, Communication, Antennas and Optical Networks

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

978-889070185-6 (ISBN)

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering



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