Antenna device and radar device using the same

Details Antenna device and radar device using the same Antenna device and radar device using the same

2007-09-18

2007-09-18

Nguyen, Hoang V. (Department: 2821)

Communications: radio wave antennas

Antennas

Wave guide type

C343S840000

Reexamination Certificate

active

11581567

ABSTRACT:
An antenna device having a primary radiator that includes a transmission portion formed of a cylindrical waveguide extending in a direction parallel to the frontward direction of the antenna device, and a radiation portion of a rectangular horn shape, extending in a direction perpendicular to the above-described frontward direction. The radiation portion is rotatably connected, by a rotary joint, to a waveguide of which the center axis in the extending direction conforms to that of the transmission portion. A reflector is disposed about the rotation axis of the primary radiator along the rotation axis direction thereof, and has a reflection surface around the entire peripheral direction of the primary radiator. The reflector is disposed at a predetermined attitude with respect to the primary radiator so as to obtain a predetermined directivity.

REFERENCES:
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patent: 6087985 (2000-07-01), Rummeli et al.
patent: 6741216 (2004-05-01), Inasawa et al.
patent: 7095380 (2006-08-01), Yoneda et al.
patent: 8-321710 (1996-12-01), None
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patent: 11-88029 (1999-03-01), None
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patent: 2004-112660 (2004-04-01), None
Written Opinion dated May 31, 2005 (with English translation).
International Search Report dated May 31, 2005.

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