US 12,438,280 B2
Antenna and electronic device
Yukio Kaneko, Tokyo (JP); Takashi Kawamura, Tokyo (JP); and Tetsuo Ikeda, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 18/042,496
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Aug. 17, 2021, PCT No. PCT/JP2021/030008
§ 371(c)(1), (2) Date Feb. 22, 2023,
PCT Pub. No. WO2022/050039, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 2020-147314 (JP), filed on Sep. 2, 2020.
Prior Publication US 2023/0327342 A1, Oct. 12, 2023
Int. Cl. H01Q 11/08 (2006.01); H01Q 1/24 (2006.01); H01Q 1/27 (2006.01); H01Q 1/36 (2006.01); H01Q 9/16 (2006.01); H01Q 21/06 (2006.01); H01Q 21/28 (2006.01)
CPC H01Q 11/08 (2013.01) [H01Q 1/24 (2013.01); H01Q 1/273 (2013.01); H01Q 1/362 (2013.01); H01Q 9/16 (2013.01); H01Q 21/06 (2013.01); H01Q 21/28 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An antenna, comprising:
a first coil constituting a normal mode helical antenna, wherein
a first cross-sectional area of the first coil is less than a second cross-sectional area of the first coil, for a single turn of the first coil,
the first cross-sectional area is perpendicular to an axis of the first coil at each end of the first coil, and
the second cross-sectional area is perpendicular to the axis of the first coil near a center of the first coil; and
a first impedance matching mechanism attached with the first coil, wherein the first impedance matching mechanism includes a feeding tap, and both ends of the feeding tap are short-circuited to the first coil.