Bartlett, ChadBornemann, Jens2022-03-162022-03-1620192019Bartlett, C., & Bornemann, J. (2019). Cross-configuration substrate integrated waveguide beamforming network for 1D and 2D beam patterns. IEEE Access, 7, 151827-151835. 10.1109/ACCESS.2019.2947481https://doi.org/10.1109/ACCESS.2019.2947481http://hdl.handle.net/1828/13804The authors greatly acknowledge Mr. Ian Goode and Dr. Carlos Saavedra of Queens University for their help and expertise with far-field measurements, as well as Dr. Aidin Taeb and Dr. Safieddin Safavi-Naeini of the CAIRS facility at the University of Waterloo for their help and expertise with near-field measurements.This paper presents the simulated and measured results of a dual-layer substrate integrated waveguide (SIW) beamforming network utilizing an 8 x 8 cross-configuration Butler matrix over a frequency range of 28.5 to 31.5 GHz. By arranging the input ports on the bottom SIW layer and employing dual-layer passband filters as a detachment point, the top SIW layer can be interchanged with the purpose of exploring one-dimensional and two-dimensional broadside beam patterns. Although Butler matrices are not typically utilized for beamforming in this configuration, two examples of interchangeable top layer arrays are demonstrated; the first being a 2 x 8 slot antenna array for 1-D scanning, and the second being a 2 x 4 center-slot array for 2-D scanning. Each of the beamforming network's simulated and measured 10 dB bandwidth is demonstrated over a range of 28.5 to 31.5 GHz. Additional design details and dimensions are specified for the aforementioned passband filter transitions, as well as for each of the slot antenna arrays.enButler matrixmillimeter-waveslot antenna arraysubstrate integrated waveguide (SIW)dual-layer SIW filtersArticleDepartment of Electrical and Computer Engineering