Small Square Monopole Antenna for UWB Applications With Variable Frequency Band Notch Function
In this letter, a novel printed monopole antenna (PMA) for ultrawideband (UWB) applications with variable frequency band notch characteristic is presented. The proposed antenna consists of a stepped square radiating patch with two U shaped slots and a notched ground plane with a T shaped sleeve that provides a wide usable fractional bandwidth of more than 140% (2.8516.73 GHz) By cutting two modified U shaped slots with variable dimensions on the radiating patch, frequency band stop performance is generated, and we can control its characteristics such as band notch frequency and its bandwidth. The designed antenna has a small size of 12 times 19 mm2 while showing the band rejection performance in the frequency band of 5.02 5.97 GHz.
IEEE Antennas and Wireless Propagation Letters