Title:
可変容量デバイス及びアンテナ装置
Document Type and Number:
Japanese Patent JP6475198
Kind Code:
B2
Abstract:
A variable capacitance device includes: capacitors coupled in series between first and second signal terminal electrodes, each of the capacitors having a dielectric layer, a lower electrode and an upper electrode, a permittivity of the dielectric layer changing according to a voltage applied to the dielectric layer, the lower and upper electrodes sandwiching the dielectric layer; resistance films coupled between the capacitors and a bias terminal electrode; a first insulating film that contacts the resistance films; and a second insulating film that covers the capacitors, the resistance films and the first insulating film, wherein: a thermal conductivity of the first insulating film is larger than that of the second insulating film; and at least one of the resistance films has a pair of connection patterns provided on both ends thereof and resistance patterns that are coupled in parallel between the connection patterns.
Inventors:
Daiki Ishii
Kentaro Morito
Kentaro Morito
Application Number:
JP2016129183A
Publication Date:
February 27, 2019
Filing Date:
June 29, 2016
Export Citation:
Assignee:
TAIYO YUDEN CO.,LTD.
International Classes:
H01G7/06; H01Q7/00
Domestic Patent References:
| JP2016051744A | ||||
| JP2015073047A | ||||
| JP2016081958A | ||||
| JP5167216A | ||||
| JP2002008902A |
Foreign References:
| WO2006082817A1 |
Attorney, Agent or Firm:
Shuhei Katayama