Title :
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
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2003.814747
