Title:
電磁界プローブ
Document Type and Number:
Japanese Patent JP6515983
Kind Code:
B2
Abstract:
This specification discloses an excellent communication device of a field coupling type that increases field coupling efficiency between electrodes and realizes a small-sized device. This specification also discloses a communication system and an electrode. A communication device 100 includes: a first resonant circuit 121 connected in series to an electrode unit 110 formed with two conductor plates; and a second resonant circuit 122 connected in parallel to the electrode unit 110 and the first resonant circuit 121, which are connected in series. The constant of a resonant circuit is determined so that the voltage V2 to be applied to the electrode unit 110 becomes higher than the voltage V1 to be applied to the electrode unit 110 and the first resonant circuit 121 connected in series. In this manner, a field coupling electrode that has a very high coupling strength at a target frequency is obtained.
Inventors:
Yoshihiro Kato
Koichi Ito
Noriyuki Mukai
Masaya Takano
Takeshi Maeda
Fukunaga Seigo
Koichi Ito
Noriyuki Mukai
Masaya Takano
Takeshi Maeda
Fukunaga Seigo
Application Number:
JP2017226498A
Publication Date:
May 22, 2019
Filing Date:
November 27, 2017
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04B13/00; G01R29/08; H04W4/80
Domestic Patent References:
| JP2009015574A | ||||
| JP2003227856A | ||||
| JP2008099234A | ||||
| JP56143960A | ||||
| JP2000512738A | ||||
| JP11225119A | ||||
| JP2009213062A | ||||
| JP2011199484A |
Foreign References:
| US5703928 |
Attorney, Agent or Firm:
Masaaki Miyata
Eiji Yamada
Eiji Sasaki
Toshio Sawada
Daido Patent Office
Eiji Yamada
Eiji Sasaki
Toshio Sawada
Daido Patent Office