GPS HELIX ANTENNA DESIGN

Abstract

The Ground positioning through GPS-Global Positioning System has earned extreme significance in
the recent years and has various  applications. GPS is well-developed system which was initially
established for military objectives and later showed itself in civil applications. It consists of three parts
as control, space and user. Receiver antennas are one of most important mechanism which is used on
the user side. These antennas have specific central frequency with narrow reception bandwidth and a
beam width must be capable of  receiving signals coming from low  horizontal angles and also the
structure should be sensitive to right-hand circular polarized waves.
 
In this study, a receiver antenna which is designed  in helix form has been  implemented for civil GPS
applications. In the case when the designed antenna did not meet the required criteria, it was observed
that the problem arose from impedance mismatching between the antenna and transmission line and a
passive impedance matching circuit has been used in order to eliminate this problem.

Keywords

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GPS HELIX ANTENNA DESIGN

Abstract

GPS HELIX ANTENNA DESIGN

Keywords

• -