Title :
A Novel Printed UWB Slot Antenna With Reconfigurable Band-Notch Characteristics
Author :
Tasouji, Nasrin ; Nourinia, J. ; Ghobadi, Ch ; Tofigh, Farzad
Author_Institution :
Electr. Eng. Dept., Urmia Univ., Urmia, Iran
Abstract :
A novel printed ultrawideband (UWB) slot antenna with reconfigurable band-notch characteristics is presented in this letter. The proposed antenna consists of a modified rectangular radiation patch with a circular and three rectangular-shaped slots etched on it. Additionally, by cutting two triangular-shaped slits on a modified ground plane, practical fractional bandwidth of more than 120% (3.12-12.51 GHz), defined by -10 dB return loss, is achieved. In order to generate single and dual band-notch characteristics, two p-i-n diodes are mounted across the circular slot. The designed antenna has small size of 20 × 20 mm2 with switchable single notched bands of 3.12-3.84 GHz WiMAX and 5-6.07 GHz WLAN, when diode 1 and diode 2 are respectively on. Also, dual bands of 3.12-3.82 and 4.9-6.06 GHz are eliminated from whole frequency band when both diodes are concurrently on.
Keywords :
WiMax; antenna radiation patterns; microstrip antennas; microwave antennas; p-i-n diodes; slot antennas; ultra wideband antennas; wireless LAN; WLAN; WiMAX; circular slot; frequency 3.12 GHz to 3.84 GHz; frequency 5 GHz to 6.07 GHz; ground plane; p-i-n diodes; printed UWB slot antenna; reconfigurable band-notch characteristics; rectangular radiation patch; rectangular-shaped slots; triangular-shaped slits; ultrawideband slot antenna; Antenna measurements; Bandwidth; P-i-n diodes; Slot antennas; Ultra wideband antennas; Band-notch; microstrip slot antenna; p-i-n diodes; reconfigurable;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2013.2273452
