Multi-Band Antenna with L-U-E Slots for WiMAX and WLAN Applications

This paper presents a small size multi-band microstrip patch antenna with L-shaped and U-shaped slots that are etched on the patch of antenna along with a square plane with the feed line for WiMAX, WLAN, point-to-point wireless communication, and X-band applications. The proposed antenna has the bandwidth range from 2-10 GHz. The return loss is less than -10 dB and the VSWR is in desired range for the mentioned bandwidth. The defected ground, the L-Shaped and U-shaped Slots are etched to obtain the multiband operation for the required frequency applications. The double feed is used to narrow the Bandwidth. The antenna is simulated using the Ansys Electronics Desktop and measured using Agilent VNA. The dimensions of an antenna are 55.9 mm x 39 mm.