US 12,218,403 B2
Antenna
Hiromichi Yoshikawa, Yokohama (JP); and Satoshi Ishikawa, Chofu (JP)
Assigned to KYOCERA CORPORATION, Kyoto (JP)
Appl. No. 17/904,874
Filed by KYOCERA CORPORATION, Kyoto (JP)
PCT Filed Feb. 19, 2021, PCT No. PCT/JP2021/006506
§ 371(c)(1), (2) Date Aug. 24, 2022,
PCT Pub. No. WO2021/172238, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 2020-031075 (JP), filed on Feb. 26, 2020.
Prior Publication US 2023/0128565 A1, Apr. 27, 2023
Int. Cl. H01Q 1/12 (2006.01); H01Q 1/48 (2006.01); H01Q 9/04 (2006.01); H01Q 21/00 (2006.01)
CPC H01Q 1/12 (2013.01) [H01Q 1/48 (2013.01); H01Q 9/045 (2013.01); H01Q 21/0006 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An antenna, comprising:
an antenna body;
a case comprising a bottom surface and side surfaces disposed around the bottom surface, the case supporting the antenna body on the bottom surface, the case being formed of metal; and
a ceiling portion disposed in such a manner to face the bottom surface of the case, the ceiling portion being in contact with the side surfaces, the ceiling portion being formed of a dielectric body,
wherein
a distance from the ceiling portion to the antenna body is shorter than a half of a wavelength of a predetermined frequency serving as a frequency to be used,
the antenna body comprises a conductor portion comprising a first conductor, a second conductor, a third conductor and a fourth conductor, and
the first conductor, the second conductor, the third conductor and the fourth conductor are separated from one another at predetermined intervals and are configured to be capacitively connected to one another.