The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2020
Filed:
May. 20, 2019
Yazaki Corporation, Tokyo, JP;
Kouichi Yamamoto, Shizuoka, JP;
Kazutomo Fujinami, Shizuoka, JP;
Hiroshi Miyamoto, Shizuoka, JP;
Ryohei Nishizaki, Shizuoka, JP;
You Yanagida, Shizuoka, JP;
Kunihiko Yamada, Shizuoka, JP;
YAZAKI CORPORATION, Minato-ku, Tokyo, JP;
Abstract
A detection device includes a switch unit, the switch unit performs switching to a gain reduction state in which a gain of a loop antenna is reduced or a gain non-reduction state in which the gain of the loop antenna is not reduced in correspondence with a state of a detection target. When a wavelength of an electric wave is set as λ, the switch unit includes switch terminals for reducing the gain of the loop antenna within a range K1 on the loop antenna from a first circuit terminal to a position that is spaced away from the first circuit terminal by λ/8. In addition, the switch unit includes switch terminals for reducing the gain of the loop antenna within a range on the loop antenna from a second circuit terminal to a position that is spaced away from the second circuit terminal by λ/8.