CPW-fed slot antenna with fractal tuning stub for wideband circular polarization

Author

Gosalvitr, Jeera ; Mahatthanajatuphat, Chatree ; Akkaraekthalin, Prayoot ; Chaimool, Sarawuth

Author_Institution

Fac. of Eng., King Mongkut´´s Univ. of Technol. North Bangkok, Bangkok, Thailand

fYear

2011

fDate

17-19 May 2011

Firstpage

212

Lastpage

215

Abstract

Based on the use of the fractal tuning stub and slot radiator, a wideband circularly polarized coplanar waveguide (CPW)-fed slot antenna with fractal tuning stub is presented. The fractal tuning stub has been designed to enhance widely the impedance bandwidth. Moreover, in order to achieve the extended axial ratio bandwidth, the slot radiator is etched and verified on the upper slot. The proposed antenna attains an overlapped bandwidth (axial ration ≤ 3 dB and return loss ≤ 10 dB) of 45% (2.25-3.57 GHz) in measurement.

Keywords

coplanar waveguides; polarisation; slot antennas; CPW-fed slot antenna; extended axial ratio bandwidth; fractal tuning stub; frequency 2.25 GHz to 3.57 GHz; impedance bandwidth; return loss; slot radiator; wideband circular polarization; wideband circularly polarized coplanar waveguide; Antenna measurements; Antennas; Fractals; Microstrip; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2011 8th International Conference on

Conference_Location

Khon Kaen

Print_ISBN

978-1-4577-0425-3

Type

conf

DOI

10.1109/ECTICON.2011.5947810

Filename

5947810