Circular polarized transparent antenna for 5.8 GHz WLAN applications

• Main Authors: Wahid, Wizatul Izyan, Kamarudin, Muhammad R., Khalily, Mohsen, Peter, Thomas
• Format: Article
• Published: Electromagnetics Academy 2015
• Subjects: TK6570 Mobile Communication System
• Online Access: http://eprints.utm.my/id/eprint/58050/; http://dx.doi.org/10.2528/PIERL15071201

A novel design for a transparent circularly polarized circular slot antenna fed by a coplanarwaveguide (CPW) is presented in this paper. The circular polarization is achieved by introducing atapered split gap in the ring patch of the circular slot antenna in combination with unequal CPWground arms. The antenna is designed using AgHT-4 laminated on a 2 mm thick glass with a relativepermittivity of 7. The proposed antenna is designed to operate at 5.8 GHz for WLAN applications. Thetapered split gap and inequality in the lengths of the CPW ground arms contribute to a 3 dB axial ratiobandwidth from 5.4 to 6.2 GHz. The proposed antenna has been studied theoretically and fabricated.The measured results show that the proposed antenna has a gain of 0.92 dB at 5.8 GHz. Reflectioncoefficient (S11), axial ratio (AR), and radiation patterns are presented and briefly discussed.