Title :
Band-notched ultra-wideband monopole antenna using coupled resonator
Author :
Xie, H.-H. ; Jiao, Yong-Chang ; Zhang, Zhenhao ; Song, Yuning
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´an, China
Abstract :
A 5.2 GHz band-notched ultra-wideband monopole antenna using a proximity coupled resonator is proposed. Compared with conventional methods which transform antenna/ground structures to achieve band-notches, the proposed monopole antenna uses a coupled resonator to obtain a band-notch at 5.2 GHz and does not change the antenna surface current distribution. Two layer substrates are used and the resonator is placed between the feed line and the ground plane. An experimental prototype was fabricated and the measured data display an impedance bandwidth of 2.5-11 GHz with VSWR <; 2 except for the rejected band of 5.06-5.52 GHz for HIPERLAN application. Also, near-omnidirectional radiation characteristics in the desired frequency band can be obtained.
Keywords :
antenna feeds; antenna radiation patterns; impedance matching; monopole antennas; resonators; ultra wideband antennas; HIPERLAN application; antenna structures; antenna surface current distribution; band-notched ultra-wideband monopole antenna; feed line; frequency 5.2 GHz; frequency band; ground plane; ground structures; impedance bandwidth; near-omnidirectional radiation characteristics; proximity coupled resonator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.1331
