Title :
A CPW-Fed ultrawideband antenna with dual notched bands
Author :
Zheng, Zhi-An ; Chu, Qing-Xin
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
A coplanar waveguide fed (CPW-fed) ultrawideband (UWB) antenna with dual band-notched characteristics is proposed and implemented. The proposed antenna consists of part of a circular patch and two modified ground planes. Two symmetrical slots are etched from the ground plane to implement the notched band at 5.5 GHz. The other notched band at 3.5 GHz is obtained by etching a split ring slot in the radiator. The simulation and measurement show that the proposed antenna achieves an impedance bandwidth of 3.1-10.6 GHz with VSWR < 2, except the bandwidth of 3.2-3.8 GHz and 4.8-6.2 GHz. A nearly omnidirectional radiation pattern and stable gain with variation less than 3 dB are also obtained except in the notched bands.
Keywords :
antenna feeds; antenna radiation patterns; coplanar waveguide components; microstrip antennas; multifrequency antennas; slot antennas; ultra wideband antennas; CPW-fed ultrawideband antenna; circular patch; coplanar waveguide; dual band notched characteristics; frequency 3.1 GHz to 10.6 GHz; ground planes; omnidirectional radiation pattern; radiator; split ring slot etching; Bandwidth; Etching; Feeds; Frequency; Impedance; Narrowband; Ultra wideband antennas; Ultra wideband technology; WiMAX; Wireless LAN; CPW-Fed; UWB antenna; dual notched band;
Conference_Titel :
Ultra-Wideband, 2009. ICUWB 2009. IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4244-2930-1
Electronic_ISBN :
978-1-4244-2931-8
DOI :
10.1109/ICUWB.2009.5288678
