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A Compact CPW-Fed Slotted Patch Antenna for Dual-Band Operation

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3 Author(s)
Wen-Chung Liu ; Dept. of Aeronaut. Eng., Nat. Formosa Univ., Yunlin, Taiwan ; Chao-Ming Wu ; Nien-Chang Chu

A compact coplanar waveguide (CPW)-fed patch antenna designed by simply embedding two types of shaped slots into a rectangular patch for achieving dual-band operation is presented. The use of embedded slots can effectively excite multiresonant modes together with good dual-impedance bandwidths, especially ultrawide for the upper bandwidth. By fabricating and measuring the prototype of the proposed optimal antenna, dual operating bands with 10-dB return-loss bandwidths of about 230 MHz centered at 2.42 GHz and of about 73% ranging from 4.8 to 9.62 GHz covering the required bandwidths of 2.4/5.2/5.8 GHz WLAN standards and the C-band satellite communication were obtained. Also, a stable monopole-like radiation pattern and an average antenna gain of 1.4 and 5.1 dBi, respectively, across the dual operating bands have been measured.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:9 )