Broadband CPW-fed square slot antennas with a widened tuning stub

Author

Chen, Horng-Dean

Author_Institution

Dept. of Electron. Eng., Cheng-Shiu Inst. of Technol., Kaohsiung, Taiwan

Volume

51

Issue

8

fYear

2003

Firstpage

1982

Lastpage

1986

Abstract

By using a coplanar waveguide (CPW) feed with a widened tuning stub, a square slot antenna for broadband operation is presented. Experimental results show that the impedance matching for the proposed antenna strongly depends on the location of the tuning stub in the square slot, and the impedance bandwidth is mainly determined by the width and length of the tuning stub. By properly choosing the location and the size of the tuning stub, a wide impedance bandwidth of 60% can be obtained, which is about 1.9 times that of a conventional CPW-fed square slot antenna with a simple tuning stub. Details of the experimental results are presented and discussed.

Keywords

antenna feeds; broadband antennas; coplanar waveguides; impedance matching; slot antennas; tuning; broadband CPW-fed square slot antennas; coplanar waveguide feed; impedance bandwidth; impedance matching; square slot antenna; tuning stub length; tuning stub location; tuning stub size; tuning stub width; widened tuning stub; Antenna feeds; Bandwidth; Broadband antennas; Circuit optimization; Coplanar waveguides; Geometry; Horn antennas; Impedance matching; Resonance; Slot antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2003.814747

Filename

1219609