Title :
Aperture UWB antenna with triple band-notched characteristics
Author :
Liao, X.-J. ; Yang, Hong-Chuan ; Han, Nan ; Li, Yuhua
Author_Institution :
Dept. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
fDate :
1/1/2011 12:00:00 AM
Abstract :
A novel semi-circle-shaped aperture ultra-wideband (UWB) antenna with triple band-notched characteristics is proposed. The band notches are realised by etching one complementary split-ring resonator inside a circular exciting stub on the front side, employing a interrogation-shaped defected ground structure in each side of the ground plane as well as symmetrically adding a pair of open-circuit stubs at the edge of the slot, and tri-band rejected filtering properties in the WiMAX/WLAN are achieved. Experimental results show that the designed antenna, with compact size of 24 × 30 × mm2, has an impedance bandwidth of 2.6 - 12 - GHz for VSWR less than 2, except three freqency stop-bands of 3.3 - 4, 5.15 - 5.4, and 5.8 - 6.1 - GHz. Moreover, the antenna has good omnidirectional radiation patterns in the H-plane.
Keywords :
WiMax; antenna radiation patterns; aperture antennas; defected ground structures; filtering theory; multifrequency antennas; ultra wideband antennas; wireless LAN; WiMAX-WLAN; aperture UWB antenna; bandwidth 2.6 GHz to 12 GHz; complementary split-ring resonator; frequency 3.3 GHz to 4 GHz; frequency 5.15 GHz to 5.4 GHz; frequency 5.8 GHz to 6.1 GHz; interrogation-shaped defected ground structure; omnidirectional radiation patterns; open-circuit stubs; semicircle-shaped aperture ultrawideband antenna; triband rejected filtering properties; triple band-notched characteristics;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.3116
