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A wideband stacked patch antenna for reconfigurable polarization applications

In this paper, a wideband linear polarization (LP) stacked patch antenna with two switchable feeding ports is proposed. Individual excitation at the two diagonal ports can produce a 180-degree phase-shifting due to the symmetrical structure. Then, a polarization reconfigurable antenna array based on the proposed LP antenna is developed, which can radiate vertical-LP (V-LP), horizontal-LP (H-LP), left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP) waves by properly selecting the feeding ports.