Engineering and Technology Journal

A new reduced size single probe fed microstrip patch antenna with irregular slits
has been presented to be used as a receiving antenna for Global Positioning Systems
(GPS) integrated with cellular handheld mobile wireless systems. The proposed design is
based on the nearly square microstrip patch antenna with two pairs of orthogonal slits
cut from the edge. It has been found that this antenna offers further reduction in size
with good radiation properties required for GPS system. The resulting circular
polarization bandwidth (with axial ratio ≤ 3 dB) has been found to meet that required for
this application. The proposed antenna possesses an average gain of 4.5 dB overall the
GPS L1 operation.