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
Details
| Primary Language | English |
|---|---|
| Journal Section | Articles |
| Authors | |
| Publication Date | October 25, 2010 |
| Published in Issue | Year 2009 Volume: 9 Issue: 2 |
