A Novel UWB Band Notched Rectangular Patch Antenna with Square Slot

In this paper, a patch antenna with band notched characteristics for ultra wide band is proposed. The proposed antenna design is simulated on electromagnetic (EM) simulation software using FR-4 substrate with dielectric constant of 4.4 and thickness of 1.6 mm.The proposed antenna has a compact structure, the total size is 15×14.5 mm² and fed with 50 Ω microstrip by optimizing the width of partial ground, the width of the feed line to operate in UWB.With the design, the return loss is lower than 10 dB in 3.1-10.6 GHz frequency range and show the band-notch characteristic in the UWB band to avoid interferences, which is caused by WLAN (5.15-5.825 GHz) and WiMAX (5.25-5.85 GHz) systems. In addition, band-notched filtering properties in the 5.15-5.825 GHz are achieved by rectangular slot on the radiating element.The proposed antenna is easy to integrate with microwave circuitry for low manufacturing cost. The antenna structure is flat, and its design is simple and straightforward.