Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Reexamination Certificate
2005-05-17
2005-05-17
Wong, Don (Department: 2821)
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
C343S797000, C343S853000
Reexamination Certificate
active
06894655
ABSTRACT:
A phased array antenna includes a substrate, and an array of dipole antenna elements on the substrate. Each dipole antenna element includes a medial feed portion, and a pair of legs extending outwardly therefrom. Pairs of adjacent legs of adjacent dipole antenna elements include respective spaced apart end portions. The phased array antenna further includes selectable impedance elements and switches. Each switch is for selectively coupling at least one impedance element between a respective pair of adjacent legs of adjacent dipole antenna elements for changing the capacitive coupling therebetween.
REFERENCES:
patent: 4381566 (1983-04-01), Kane
patent: 6417813 (2002-07-01), Durham
patent: 6512487 (2003-01-01), Taylor et al.
patent: 6552687 (2003-04-01), Rawnick et al.
patent: 6744411 (2004-06-01), Osterhues et al.
Durham Timothy E.
Gothard Griffin K.
Jones Anthony M.
Kralovec Jay
Harris Corporation
Vy Hung Tran
Wong Don
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