Antenna device and radar apparatus including the same

Details Antenna device and radar apparatus including the same Antenna device and radar apparatus including the same

2006-10-19

2008-11-18

Dinh, Trinh V (Department: 2821)

Communications: radio wave antennas

Antennas

Wave guide type

C343S7810CA

Reexamination Certificate

active

07453411

ABSTRACT:
An antenna device having a primary radiator that includes a transmitting section formed of a cylindrical waveguide extending parallel to a direction in which the front of the antenna device faces (front direction), and a rectangular horn-shaped radiant section extending perpendicular to the front direction. A waveguide whose central axis in the extending direction corresponds to that of the transmitting section of the primary radiator is connected to an end of the transmitting section via a rotary joint so as to be rotatable. A first reflector is of an offset parabolic type, and is disposed above the primary radiator in a predetermined position with respect to the primary radiator such that a predetermined directivity is obtained. A second reflector is parabolic in the vertical direction, and is toric in the horizontal direction. The second reflector is disposed below the primary radiator in a predetermined position with respect to the primary radiator such that a predetermined directivity is obtained.

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Written Opinion dated May 31, 2005 (with English translation).
International Search Report dated May 31, 2005.

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