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

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1 Author(s)
Horng-Dean Chen ; Dept. of Electron. Eng., Cheng-Shiu Inst. of Technol., Kaohsiung, Taiwan

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.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:51 ,  Issue: 8 )

Date of Publication:

Aug. 2003

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