Title:
ANTENNA DEVICE, AND EARPHONE
Document Type and Number:
WIPO Patent Application WO/2020/079911
Kind Code:
A1
Abstract:
This antenna device is provided with: a first terminal to which a high-frequency signal is input; a second terminal connected to the ground; a first radiation part formed into a spiral shape having a maximum diameter equal to a first diameter; a second radiation part connected at one end to one end of the first radiation part, formed into a spiral shape having a maximum diameter equal to a second diameter which is larger than the first diameter, and having an open end at the other end thereof; a first wiring connecting between the other end of the first radiation part and the first terminal; and a second wiring connecting between the other end of the first radiation part and the second terminal.
Inventors:
KAWAMURA TAKASHI (JP)
SATO MASAHIRO (JP)
SATO MASAHIRO (JP)
Application Number:
PCT/JP2019/029159
Publication Date:
April 23, 2020
Filing Date:
July 25, 2019
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
SONY CORP (JP)
SONY CORP (JP)
International Classes:
H01Q9/42; H01Q1/24; H01Q1/38; H04R1/10
Foreign References:
| JP2005197864A | 2005-07-21 | |||
| US20130207856A1 | 2013-08-15 |
Attorney, Agent or Firm:
IWATA, Masanobu et al. (JP)
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