Communications: radio wave antennas – Antennas – Antenna with parasitic director
Reexamination Certificate
2007-02-20
2007-02-20
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
Antenna with parasitic director
C343S702000, C343S834000
Reexamination Certificate
active
11190725
ABSTRACT:
A smart antenna includes a ground plane, an active antenna element adjacent the ground plane and having a radio frequency (RF) input associated therewith, and passive antenna elements adjacent the ground plane. Impedance elements are connected to the ground plane and are selectively connectable to the passive antenna elements for antenna beam steering. Tuning elements are adjacent the passive antenna elements for tuning thereof so that an input impedance of the RF input of the active antenna element remains relatively constant during the antenna beam steering.
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Chiang Bing A.
Richeson, legal representative Dee M.
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Ho Tan
InterDigital Technology Corporation
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