US 9,810,779 B2
Radar module and speed measuring device using same
Takafumi Matsumura, Hitachinaka (JP); and Hideyuki Nagaishi, Tokyo (JP)
Assigned to Hitachi Automotive Systems, Ltd., Hitachinaka-shi (JP)
Appl. No. 14/432,232
Filed by Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki (JP)
PCT Filed Oct. 4, 2013, PCT No. PCT/JP2013/077022
§ 371(c)(1), (2) Date Mar. 30, 2015,
PCT Pub. No. WO2014/054765, PCT Pub. Date Apr. 10, 2014.
Claims priority of application No. 2012-222649 (JP), filed on Oct. 5, 2012.
Prior Publication US 2015/0253421 A1, Sep. 10, 2015
Int. Cl. G01S 13/60 (2006.01); G01S 7/03 (2006.01); H01Q 1/32 (2006.01); H01Q 19/06 (2006.01); G01S 7/35 (2006.01); H01Q 15/08 (2006.01); G01S 7/02 (2006.01)
CPC G01S 13/60 (2013.01) [G01S 7/032 (2013.01); H01Q 1/3233 (2013.01); H01Q 19/062 (2013.01); G01S 2007/028 (2013.01); G01S 2007/356 (2013.01); H01Q 15/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A radar module using a substrate with a plane antenna formed on a surface of the substrate, the radar module comprising:
the substrate; and
a lens having one end face that is plane and another end face that is spherical, wherein
a plane side of the lens is disposed to contact the plane antenna,
a spherical side of the lens is disposed in a remote field of the plane antenna,
a feeder connected to the plane antenna is formed on the substrate, and
a width of the feeder changes at an interface between the substrate and the lens as a boundary.