US 12,236,304 B2
RFID tag with narrow gap for use in microwaveable food packages
Ilkka Yli-Peltola, Kangasala (FI); Lauri Huhtasalo, Tampere (FI); and Antti Leskelä, Vesilahti (FI)
Assigned to DIGITAL TAGS FINLAND OY, Tampere (FI)
Appl. No. 17/770,883
Filed by DIGITAL TAGS FINLAND OY, Tampere (FI)
PCT Filed Oct. 20, 2020, PCT No. PCT/IB2020/059849
§ 371(c)(1), (2) Date Apr. 21, 2022,
PCT Pub. No. WO2021/079266, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 1951189-8 (SE), filed on Oct. 21, 2019.
Prior Publication US 2022/0405543 A1, Dec. 22, 2022
Int. Cl. G06K 19/077 (2006.01)
CPC G06K 19/07773 (2013.01) 6 Claims
OG exemplary drawing
 
1. An antenna for an RFID (Radio Frequency Identification) tag comprising:
two antenna parts being arranged at opposite end areas of the antenna;
at least one intermediate part forming a bridge between said antenna parts, one of said at least one intermediate part comprising power feeding areas to be connected to an integrated circuit, wherein the power feeding areas are separated by a gap to be bridged by the integrated circuit; and
a by-pass gap arranged in a bypass connection formed as an extension of the at least one intermediate part, said by-pass gap being arranged to provide a low impedance by-pass path at a microwave frequency, wherein the gap of the by-pass gap has a meandering extension, and wherein the by-pass gap is arranged in a loop formed between a first intermediate part and a second intermediate part.