US 12,463,330 B2
Antenna device for a vehicle
Noritaka Terashita, Tomioka (JP); Motohisa Ono, Tomioka (JP); Tomohiro Hoshi, Tomioka (JP); Yusuke Yokota, Tomioka (JP); and Satoshi Iwasaki, Tomioka (JP)
Assigned to YOKOWO CO., LTD., Tokyo (JP)
Appl. No. 18/038,210
Filed by YOKOWO CO., LTD., Tokyo (JP)
PCT Filed Nov. 26, 2021, PCT No. PCT/JP2021/043509
§ 371(c)(1), (2) Date May 23, 2023,
PCT Pub. No. WO2022/114161, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 2020-196868 (JP), filed on Nov. 27, 2020.
Prior Publication US 2024/0097317 A1, Mar. 21, 2024
Int. Cl. H01Q 1/32 (2006.01); H01Q 1/52 (2006.01); H01Q 5/40 (2015.01); H01Q 9/36 (2006.01); H01Q 21/28 (2006.01)
CPC H01Q 1/3275 (2013.01) [H01Q 1/521 (2013.01); H01Q 5/40 (2015.01); H01Q 9/36 (2013.01); H01Q 21/28 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An antenna device for a vehicle comprising:
a case;
a base forming an accommodation space together with the case;
a first antenna element that is accommodated in the accommodation space and at least transmits or receives radio waves in a first frequency band;
a second antenna element that is accommodated in the accommodation space and at least transmits or receives radio waves in a second frequency band different from that of the first antenna element; and
a third antenna element that is accommodated in the accommodation space and at least transmits or receives radio waves in a third frequency band different from the first frequency band and the second frequency band,
wherein the first antenna element includes a first capacitance loading element and a first helical element and at least partially has a meandering shape in a first direction that intersects a polarization of the second antenna element,
in a case where a front side of a vehicle is assumed as a front side, the third antenna element is positioned at a rear side of the first antenna element, and
at least a part of the first helical element is positioned between the first capacitance loading element and the third antenna element.