Communications: radio wave antennas – Antennas – Wave guide type
Reexamination Certificate
2008-07-07
2011-11-15
Owens, Douglas W (Department: 2821)
Communications: radio wave antennas
Antennas
Wave guide type
C343S7000MS, C343S772000, C343S776000, C343S853000
Reexamination Certificate
active
08059051
ABSTRACT:
A waveguide includes a dielectric substrate having first and second opposed surfaces defining a longitudinal wave propagation path therebetween; and a conductive grid on the first surface of the substrate and comprising a plurality of substantially parallel metal strips, each defining an axis. The grid renders the first surface of the substrate opaque to a longitudinal electromagnetic wave propagating along the longitudinal wave propagation path and polarized in a direction substantially parallel to the axes of the strips. The grid allows the first surface of the substrate to be transparent to a transverse electromagnetic wave having a transverse propagation path that intersects the first and second surfaces of the substrate and having a polarization in a direction substantially normal to the plurality of metal strips. A diffraction grating on the second surface allows the waveguide to function as an antenna element that may be employed in a beam-steering antenna system.
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Aretskin Mark
Avakian Aramais
Felman Mikhail
Jia Dexin
Khodos Victor
Klein O'Neill & Singh, LLP
Owens Douglas W
Sierra Nevada Corporation
Tran Chuc
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