Top-fed quadrafilar helical antenna
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United States of America Patent
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-
Jan 30, 2001
Grant Date -
N/A
app pub date -
Aug 19, 1999
filing date -
Aug 19, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved top fed quadrafilar helical antenna that provides circular polarization with near uniform gain over the upper hemisphere. The antenna comprises a pair of crossed printed circuit boards with two feed lines and two horizontal arms per board and four piecewise linear conductors. Each arm is connected to a feed line and to the end of a conductor that is piecewise linearly attached to the edges of the crossed printed circuit boards.
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