Experimental characterization of dual linearly polarized transmitarray antennas at X-band

This paper presents the detailed experimental characterization of X-band 400-element transmitarray antennas in dual linear polarization. The latter can radiate two different and independent beams in two distinct directions with orthogonal polarizations. Two prototypes are designed and fabricated at 10 GHz; one with two beams radiating at boresight, and one designed for two beams pointing in a different direction in each polarization. A 3-dB gain bandwidth of 20% is reached for both polarizations and maximum gain is over 25 dBi for broadside beam.