Compact MUSA: Modified U-slot patch antennas with reduced cross-polarization

A modified U-slot patch antenna (MUSA) is proposed in this article to provide a compact radiating structure with reduced cross-polarization effects when compared with the standard U-slot geometry while assuring an adequate bandwidth percentage between 15 and 20. A synthesis procedure is outlined for the proposed antenna configuration, and it is assessed both numerically and experimentally at different frequencies between 1 and 10 GHz for different dielectric substrates.