Single feed circularly polarized antenna with switchable beam ability
Journal
Advanced Science Letters
ISSN
19366612
Date Issued
2017-01-01
Author(s)
Jusoh M.
Sabapathy T.
Rahim H.
Shakhirul M.
Rahman A.
Yasin M.
Mat M.
DOI
10.1166/asl.2017.7342
Abstract
A single feed circularly polarized antenna with the ability to steer the beam has been presented. The presented antenna has successfully achieved circular polarization by ensuring the axial ratio (AR) factor value of less than 3 for 2.4 GHz application. Moreover, by integrating four ideal p-i-n diode switches, the antenna‘s radiation pattern can be directed to the desired direction while suppressing the antenna gain at the unwanted angle without influencing the antenna‘s impedance bandwidth. This antenna is managed to steer the beam with certain p-i-n diode configuration at nine distinguished angle directions. Such microstrip antenna with a simple circular shape is designed on the Taconic substrate with the compact size of 100 mm square. A fully functional antenna design has been developed and tested using CST Microwave Studio. The proposed antenna could be useful for advanced and smart radio application such as 5G and cognitive radio (CR).
