Handset quadrifilar helical antenna mechanical structures
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United States of America Patent
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-
Feb 6, 2007
Grant Date -
Feb 2, 2006
app pub date -
May 16, 2005
filing date -
Jul 28, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A quadrifilar helical antenna comprising two pairs of filars having unequal lengths and phase quadrature signals propagating thereon. A disk-like impedance matching element disposed at a lower end of the antenna matches a source impedance to an antenna impedance. In certain embodiments a first crossbar connector on a substrate disposed at an upper end of the antenna electrically connects two helical filars to form a first filar pair and a second crossbar connector disposed on the substrate connects two filars to form a second filar pair.
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