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Bandwidth Enhancement of a Printed Slot Antenna With a Pair of Parasitic Patches

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5 Author(s)
Fan, S.T. ; Nat. Key Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ., Xi''an, China ; Yin, Y.Z. ; Lee, B. ; Hu, W.
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A printed microstrip-line-fed slot antenna with a pair of parasitic patches for bandwidth enhancement is proposed in this letter. By using the parasitic patches along the microstrip feed line, an additional resonance is excited, and a good performance of bandwidth enhancement can be obtained. The proposed antenna is designed and manufactured successfully. The measurement shows a good agreement with the simulation. From the measured results, the enhanced impedance bandwidth, defined by voltage standing wave ratio (VSWR) less than 2, is about 136% ranging from 2.1 to 11.1 GHz. In addition, stable and nearly omnidirectional far-field radiation patterns are observed over the entire operating band.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )