Dual-polarized dual-band square slot antenna with a U-shaped printed tuning stub for wireless communications

This paper presents an antenna design for wideband wireless communications. The proposed antenna consists of a square slot and is fed by two orthogonal microstrip feedlines with U-shaped tuning stubs. The antenna operates on two wide bands. The bandwidth is 18% in the first band and 82% in the second one. It can sever the wireless communication applications that operate at 0.9, 1.8, 1.9 and 2.4 GHz and require wide band characteristics