Hexafilar slot antenna
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Dec 5, 2000
Grant Date -
N/A
app pub date -
Mar 5, 1999
filing date -
May 3, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hexafilar slot antenna for GPS receivers. The antenna has a cylindrical dielectric body covered with a conductive coating. Six helical slots are formed in the antenna and extend around one half of its circumference to provide a right hand circular polarization for receiving GPS signals. A microstrip feed system is provided and is arranged to create balanced currents along both sides of each slot so that the impedance transformation is not adversely affected.
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