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Coplanar waveguide-fed uniplanar bow-tie antenna

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2 Author(s)
Yu-De Lin ; Antenna Lab., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Syh-Nan Tsai

The design of coplanar waveguide (CPW)-fed bow-tie antenna for the 2.4-GHz ISM band is described. A coplanar waveguide-to-coplanar strips (CPW-to-CPS) balun is used to obtain the balanced feed line for the printed bow-tie. An analysis method based on the mixed potential integral equation method is used to characterize the input characteristics of the bow-tie antenna. The numerical results obtained are in good agreement with the experimental data. Through experiments with bow-tie antennas of various extended angles, the bow-tie antenna with a 90° extended angle exhibits the widest bandwidth in the desired frequency band which has a bandwidth of 17% for a VSWR <1.5:1

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:45 ,  Issue: 2 )