US 9,812,776 B2
Antenna device
Kohji Yano, Nishinomiya (JP); and Mitsuhiko Hataya, Nishinomiya (JP)
Assigned to Furuno Electric Co., Ltd., Nishinomiya (JP)
Appl. No. 14/390,021
Filed by Furuno Electric Co., Ltd., Nishinomiya (JP)
PCT Filed Apr. 1, 2013, PCT No. PCT/JP2013/059843
§ 371(c)(1), (2) Date Oct. 1, 2014,
PCT Pub. No. WO2013/150994, PCT Pub. Date Oct. 10, 2013.
Claims priority of application No. 2012-084030 (JP), filed on Apr. 2, 2012.
Prior Publication US 2015/0054703 A1, Feb. 26, 2015
Int. Cl. H01Q 3/08 (2006.01); H01Q 21/06 (2006.01); H01P 1/06 (2006.01); H01Q 13/00 (2006.01); G01S 7/03 (2006.01); H01Q 1/12 (2006.01); H01Q 19/19 (2006.01); G01S 13/95 (2006.01)
CPC H01Q 3/08 (2013.01) [G01S 7/03 (2013.01); H01P 1/064 (2013.01); H01Q 1/125 (2013.01); H01Q 13/00 (2013.01); H01Q 19/193 (2013.01); H01Q 21/064 (2013.01); G01S 13/95 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An antenna device, comprising:
an antenna part configured to be vertically rotatable to change an elevation angle and horizontally rotatable to change an azimuth, and to outwardly radiate a radio wave;
a vertically rotating part disposed such that a longitudinal direction thereof is along an axial line of the vertical rotation and intersects perpendicularly with an axial line of the horizontal rotation;
a rotary joint coupled to the vertically rotating part; and
a waveguide path passing through the inside of the rotary joint and the inside of the vertically rotating part and connected with the antenna part, wherein a waveguide of the waveguide path is formed at, or in the vicinity of, the intersecting position of the vertical and the horizontal rotational axial lines.