US 11,809,939 B2
RFID tag with boost antenna, conductor provided with RFID tag with boost antenna, and RFID system including RFID tag with boost antenna
Shiro Sugimura, Kanazawa (JP); Shuichi Yamamoto, Kyoto (JP); Takuya Hayashi, Kyoto (JP); Koji Yamashita, Kyoto (JP); and Takaaki Sakai, Kyoto (JP)
Assigned to KYOCERA CORPORATION, Kyoto (JP)
Appl. No. 17/440,983
Filed by KYOCERA CORPORATION, Kyoto (JP)
PCT Filed Mar. 26, 2020, PCT No. PCT/JP2020/013512
§ 371(c)(1), (2) Date Sep. 20, 2021,
PCT Pub. No. WO2020/203598, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-066959 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0058461 A1, Feb. 24, 2022
Int. Cl. G06K 19/077 (2006.01); G06K 19/07 (2006.01); H01Q 1/22 (2006.01)
CPC G06K 19/07794 (2013.01) [G06K 19/0723 (2013.01); G06K 19/07771 (2013.01); G06K 19/07786 (2013.01); H01Q 1/2208 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An RFID tag device comprising:
an RFID tag; and
a boost antenna, the boost antenna comprising:
a radiation unit that is conductive;
a ground unit that is conductive and faces the radiation unit; and
a short circuit unit that connects one end of the radiation unit and one end of the ground unit, and electrically conducts the radiation unit and the ground unit to each other,
the RFID tag is disposed between the radiation unit and the ground unit of the boost antenna and at a position closer to the short circuit unit than to a center position in a longitudinal direction of the radiation unit,
the boost antenna and the RFID tag each have resonance characteristics,
wherein the radiation unit, the short circuit unit, and the ground unit are integrated,
the ground unit comprises a mounting region of the RFID tag on an inner surface on an opposite side facing the radiation unit, and
the radiation unit comprises an opening region larger in width and length in a plan view than the mounting region at a position facing the mounting region.