Modified corner-fed dual-polarised stacked patch antenna for micro-base station applications

A modified corner-fed dual-polarised stacked patch antenna, with improved port isolation, is proposed. By shifting the feed points along the lower patch edge and introducing a triangular cut in the middle of another edge, the isolation between the two ports is improved significantly. The proposed antenna achieves a return loss of about 14 dB and a port isolation of more than 28 dB, within the band 2.5-2.7 GHz. The proposed antenna is highly suitable for micro-base station applications in which features such as low profile, low cost and easy fabrication are required.