Fig. 9: Prototype and measurement.
a Photo of the fabricated prototype and measurement setup in the far-field aechoic chamber. b Measured realized gain across the frequency band in the beamforming plane Θ = 90∘ for selected ports 6, 4, and 2. For brevity, only half of the angular space is presented due to symmetry. c Contour maps of the measured realized gain at 30 GHz over the angular range up to Φ = 62.5∘ for beams generated from Port 6-1, with the same scale.
