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A Printed Crescent Patch Antenna for Ultrawideband Applications

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2 Author(s)
Azenui, N.C. ; Dept. of Electr. & Comput. Eng., Illinois Univ., Chicago, IL ; Yang, H.Y.D.

A miniaturized crescent-shape microstrip antenna is proposed for ultrawideband (3-10 GHz) applications. The crescent antenna is evolved from an elliptical patch antenna by carving a circular hole inside symmetrically. The circular aperture introduces an additional antenna in-band resonance and provides wider bandwidth with more design flexibility. The radiation characteristics of this crescent antenna are investigated with full-wave electromagnetic simulations and compared with an elliptical antenna. A crescent antenna prototype that occupies only 60% area of the elliptical patch is fabricated and tested. Antenna pattern and impedance measurements show good performance over the 3-10 GHz band with consistent radiation patterns, low cross polarization, and a substantial gain. The design method is also described

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:6 )