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:
May. 15, 2018
Filed:
Sep. 12, 2014
Tokin Corporation, Sendai-shi, Miyagi, JP;
Kazumasa Makita, Sendai, JP;
Masaki Kurimoto, Sendai, JP;
Koji Sato, Sendai, JP;
Masashi Mori, Sendai, JP;
TOKIN CORPORATION, Miyagi, JP;
Abstract
A communication device includes an antenna unit, a switch unit, a matching unit which is connected between the antenna and switch units, a communication unit which is connected to the switch unit, and a switch control unit. When the switch unit is in a conductive state, the matching unit matches a first impedance occurring if the antenna unit is seen from the matching unit and a second impedance occurring if the switch unit is seen from the matching unit. The switch control unit controls the switch unit so that the switch unit is set to the conductive state when the communication unit communicates via the antenna unit, and so that the switch unit is set to an interrupted state when the communication unit is to be protected from overvoltage. The switch control unit and switch unit are semiconductors formed under a first process rule and second process rule, respectively.