Title:
VARIABLE CAPACITANCE DEVICE
Document Type and Number:
Japanese Patent JP2015079860
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a variable capacitance device capable of digitally controlling capacitance.SOLUTION: The variable capacitance device includes: (A) N (N is an integer of 2 or more) variable capacitance elements connected in series; (B) (N+1) bias lines connected to the input side of a top variable capacitance element out of the N variable capacitance elements, the output side of the final variable capacitance element and a connection part in each pair of connected variable capacitance elements; and (C) N switching elements connected to N bias lines out of the (N+1) bias lines to switch a state where a predetermined voltage is applied to both ends of each variable capacitance element in the N variable capacitance elements and a state where the predetermined voltage is not applied.
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Inventors:
NATSUME SHINJI
NAKAJIMA KATSUAKI
KUSUMI SHINYA
NAKAJIMA KATSUAKI
KUSUMI SHINYA
Application Number:
JP2013216222A
Publication Date:
April 23, 2015
Filing Date:
October 17, 2013
Export Citation:
Assignee:
TAIYO YUDEN KK
International Classes:
H01G7/00; H01G5/40
Attorney, Agent or Firm:
Kazuo Harada