University of Sistan and Baluchestan International Journal of Communications and Information Technology 2322-4606 1 2 2011 09 20 A Novel Small E–Ring Shaped Monopole Antenna with Dual Band-Notch Function for UWB Wireless Communications 25 28 98 10.22111/cit.2011.98 EN N. Ojaroudi Islamic Azad University, Ardabil Branch M. Ojaroudi Islamic Azad University, Ardabil Branch S. Amiri Iranian Research Organization for Science and Technology (IROST) Journal Article 2011 02 01 This paper presents an E-ring shaped printed monopole antenna for UWB applications with dual notched bands performance. In order to generate single frequency band notch function, we applied a U-ring shaped monopole antenna, and by inserting a rectangular ring in the centre of it an E-ring shaped radiating patch created and a dual band-notch function can be achieved. The measured bandwidth of the proposed antenna is from 2.75 GHz to 11.43 GHz (110%) for VSWR < 2. The proposed antenna offers two notched bands, covering all the 5.2/5.8GHz of WLAN, 3.5/5.5 GHz of WiMAX and 4-GHz of C bands ranges. Good radiation behavior within the UWB frequency range has been obtained. The antenna has a small dimension of 10 *17 mm2. https://cit.usb.ac.ir/article_98_1d23fd92d23dfe803a7aaa5ac9212b99.pdf