Title :
A novel printed stub-loaded square helical antenna
Author :
Syed Abdullah Nauroze;Manos M. Tentzeris
Author_Institution :
School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, USA
fDate :
7/1/2015 12:00:00 AM
Abstract :
A novel planar printed stub-loaded square helical (PSLSH) antenna is presented for 2.4GHz WLAN applications. Unlike conventional stub loaded helical (SLH) antennas, the input impedance of the proposed antenna is real. Therefore, a simple quarter-wave transformer can be used to match this antenna. Simulation results show that the antenna has a maximum gain of 10 dBi, a front-to-back ratio of 12dbi, a 70° half-power beam width and a good axial ratio. The volume of PSLSH antenna is 75% less than conventional axial mode helical antennas and 17% less than SLH antennas. Furthermore, the usable bandwidth of PSLSH antenna (46%) is significantly higher compared to SLH antenna (10%).
Keywords :
"Helical antennas","Bandwidth","Antenna radiation patterns","Loaded antennas","Impedance","Substrates"
Conference_Titel :
Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015 IEEE International Symposium on
DOI :
10.1109/APS.2015.7304774
