Title:
ANTENNA DEVICE AND RADER DEVICE USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2005/114785
Kind Code:
A1
Abstract:
A primary radiator (1) comprises a transmitting section (12) in the form of a cylindrical waveguide extending in a direction parallel with the frontal direction of an antenna device, and a radiating section (11) of rectangular horn shape extending in a direction normal to the frontal direction. Further, the end of the transmitting section (12) of the primary radiator (1) on the side to which the radiating section (11) is not connected is rotatably connected to a waveguide (5) coaxial with the transmitting section (12) by a rotary joint (4). A first reflector (2) consists of an offset parabola reflector, disposed above the primary radiator (1) in a predetermined attitude with respect to the primary radiator (1). A second reflector (3) is parabolic in its vertical direction and torus in its horizontal direction and is disposed under the primary radiator (1) in a predetermined attitude with respect to the primary radiator (1) so as to obtain predetermined directivity.
Inventors:
NAGAI TOMOHIRO (JP)
Application Number:
PCT/JP2005/006238
Publication Date:
December 01, 2005
Filing Date:
March 31, 2005
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
NAGAI TOMOHIRO (JP)
NAGAI TOMOHIRO (JP)
International Classes:
G01S7/03; H01Q3/18; H01Q19/13; (IPC1-7): H01Q3/18; G01S7/03; H01Q19/13
Foreign References:
| JPH1188029A | 1999-03-30 | |||
| JPH06291541A | 1994-10-18 | |||
| JPH11303146A | 1999-11-02 | |||
| JPH08321710A | 1996-12-03 | |||
| JP2004112660A | 2004-04-08 |
Attorney, Agent or Firm:
Komori, Hisao (Noninbashi Chuo-k, Osaka-shi Osaka 11, JP)
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