Abstract
This research presents two novel techniques for obtaining the pattern and polarization agilities simultaneously. 35 GHz dual linearly polarized (DLP) antenna array is designed and the gain for each polarization is measured to be 18 dBi with a cross-polarization level of 20 dB between the two polarization states. 60 GHz Dual circularly polarized (DCP) antenna array is designed and the gain for each CP state is obtained as 13 dBc with a cross polarization level of 15 dB. Analog phase shifter based on the Butler matrix is used to drive each state of polarization. The designed DLP and DCP phased array systems are able to form beams in two dimensional (2-D) scan space. These millimeter-wave phased array systems with polarization agility will satisfy today's cognitive radio front-end requirements.
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