Title:
タイヤ用無線周波数トランスポンダ
Document Type and Number:
Japanese Patent JP7437375
Kind Code:
B2
Abstract:
A passive radio-frequency transponder comprising a radiating antenna made up of a single-strand helical spring having an axis of rotation, a median plane, a pitch and a diameter for a given wire diameter, and an electronic portion situated inside the radiating antenna. The electronic portion comprises an electronic chip electrically connected to a primary antenna coupled electromagnetically with the radiating antenna. The primary antenna has an axis parallel to the axis of rotation of the radiating antenna and a median plane superposed on the median plane of the radiating antenna. The primary antenna is enclosed in a cylinder, the diameter of which is smaller than one third of the inner diameter of the radiating antenna. The radio-frequency transponder is characterised in that, for a first area of the radiating antenna in which the radiating antenna is not situated in line with the electronic portion, the ratio between the pitch and the diameter for at least one turn of the helical spring is greater than 0.8.
Inventors:
Deathraves Julian
caro thomas
Clerjat Jean-Mathieu
Couturier Laurent
Portier Guillaume
caro thomas
Clerjat Jean-Mathieu
Couturier Laurent
Portier Guillaume
Application Number:
JP2021501102A
Publication Date:
February 22, 2024
Filing Date:
March 27, 2019
Export Citation:
Assignee:
Company General Deta Brissman Michelin
International Classes:
H04B1/59; B60C19/00; G06K19/077; H01Q9/27; H04B5/26; H04B5/43; H04B5/45
Domestic Patent References:
| JP2008536357A | ||||
| JP2007049351A | ||||
| JP2013537782A | ||||
| JP2013538501A | ||||
| JP2005178747A |
Foreign References:
| WO2016193457A1 | ||||
| US6112102 |
Attorney, Agent or Firm:
Shinichiro Tanaka
▲吉▼田 和彦
Hiroyuki Suda
Mitsuru Matsushita
Ichiro Kurasawa
Yasushi Yamamoto
Kosuke Yamamoto
▲吉▼田 和彦
Hiroyuki Suda
Mitsuru Matsushita
Ichiro Kurasawa
Yasushi Yamamoto
Kosuke Yamamoto