Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor
Reexamination Certificate
2008-05-20
2008-05-20
Wimer, Michael C. (Department: 2821)
Communications: radio wave antennas
Antennas
With spaced or external radio wave refractor
C343S767000, C343S909000
Reexamination Certificate
active
11155728
ABSTRACT:
A direction-change element for changing the direction of travel of an incident electromagnetic wave and electromagnetic wave transmitting/receiving elements are disposed on a substrate. The direction-change element has a periodic array of materials of different refractive indexes arranged in parallel to the substrate surface. The electromagnetic wave transmitting/receiving elements are positioned at opposite ends of the periodic array in the direction of its arrangement. The output ratio between the two electromagnetic wave transmitting/receiving elements can be used to detect the incidence angle of the electromagnetic wave with high accuracy. By changing the relative intensity of electromagnetic waves to be sent from the two electromagnetic wave transmitting/receiving elements, it is possible to achieve high-accuracy control of the angle of emittance of the electromagnetic wave to be sent from the device. Accordingly, the present invention offers a small, low-profile electromagnetic wave transmitting/receiving device capable of detecting and radiating electromagnetic waves with high accuracy of their incidence and emittance angles.
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Bourelle Emmanuel
Sato Akinobu
Suzuki Akiko
Gallagher & Lathrop
Japan Aviation Electronics Industry Limited
Lathrop, Esq. David N.
Wimer Michael C.
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