Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Axial Ratio


A New Compact Dual Band GPS Patch Antenna Design Based on Minkowski-Like Pre-Fractal Geometry

Mohammed Fadhil Hasan

Engineering and Technology Journal, 2009, Volume 27, Issue 7, Pages 1370-1375

A low profile compact microstrip antenna for GPS (L1/L2) application has been
presented in this paper. The proposed antenna design is based on the 3rd iteration
Minkowski-like pre-fractal geometry. The resulting antenna design offers a compact size,
low profile and light weight making it suitable for use in handheld applications. Antenna
performance has been evaluated using the EMSightTM from the Applied Wave Research.
The proposed antenna has shown to possess two resonance bands (for return loss .-10
dB) covering the two GPS bands. Reasonable radiation characteristics have been achieved
at the GPS frequencies (L1:1575.42 } 10.23 MHz, L2:1227.60 } 10.23 MHz) with good
circular polarization characteristics. Realized circular polarization Bandwidths (for axial
ratio . 3 dB) are found to cover adequately those required for these GPS bands.

A New Compact Size Microstrip Patch Antenna with Irregular Slots for Handheld GPS Application

Jawad K. Ali

Engineering and Technology Journal, 2008, Volume 26, Issue 10, Pages 1241-1246

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.