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Microstrip Patch Antenna for GPS application
A low profile patch antenna for GPS application is here proposed and analyzed. The
radiating structure consists on a square patch with 8 slits introduced on each side and
on the corners to reduce the overall dimensions. The circular polarization is obtained
by quadrature feeding the patch with two pins placed symmetrically on the two main
axis. The 90° phase shift is obtained by a 90° microstrip hybrid junction integrated on
the back side of the antenna ground plane. The proposed patch antenna is suitable for
implementing low cost, high stable and well circular polarized GPS antenna, as
demonstrated by numerical simulations and experimental results.
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