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Design of wideband circularly polarized aperture-coupled microstrip antennas

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2 Author(s)
S. D. Targonski ; Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA ; D. M. Pozar

Two variations of a novel feeding technique for a wideband circularly polarized aperture-coupled microstrip antenna are described. Prototype designs for wideband linearly polarized elements are first presented, and then used for circularly polarized designs. Techniques used for design of the feed network are detailed, for both series feed and parallel feed versions. Experimental results are shown for each antenna, and results for the two designs are compared. The impedance and axial ratio bandwidths for these antennas are among the best yet achieved for microstrip antenna elements. Several design variations are also discussed

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:41 ,  Issue: 2 )