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Design of small-size wide-bandwidth microstrip-patch antennas

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3 Author(s)
Shackelford, A.K. ; Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA ; Lee, K.-F. ; Luk, K.M.

Several designs for small-size wide-bandwidth microstrip antennas are examined through simulation and experiment. Designs are presented based on two wideband patch antennas: the U-slot patch antenna, and the L-probe-fed patch antenna. Several techniques are utilized to reduce the resonant length of these wideband microstrip-patch antennas: increasing the dielectric constant of the microwave substrate material, the addition of a shorting wall between the conducting patch and the ground plane, and the addition of a shorting pin between the conducting patch and the ground plane. Simulation and experimental results confirm that the size of the antennas can be reduced by as much as 94%, while maintaining impedance bandwidths in excess of 20%.

Published in:

Antennas and Propagation Magazine, IEEE  (Volume:45 ,  Issue: 1 )