Cross-Configuration Substrate Integrated Waveguide Beamforming Network for 1D and 2D Beam Patterns

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Abstract

This paper presents the simulated and measured results of a dual-layer substrate integrated waveguide (SIW) beamforming network utilizing an 8×8 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 2×8 slot antenna array for 1-D scanning, and the second being a 2×4 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.

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CITATION STYLE

APA

Bartlett, C., & Bornemann, J. (2019). Cross-Configuration Substrate Integrated Waveguide Beamforming Network for 1D and 2D Beam Patterns. IEEE Access, 7, 151827–151835. https://doi.org/10.1109/ACCESS.2019.2947481

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