Title:
アンテナ装置およびアンテナ装置の製造方法
Document Type and Number:
Japanese Patent JP6825226
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an antenna device arranged to be able to suppress the fluctuation in Q value, which is attributed to the change in temperature even with a simple structure, and provide a method for manufacturing the antenna device.SOLUTION: An antenna device 10A comprises a core 20A, and flat plate-like eddy current-generating means disposed on an outer peripheral side of a coil 50A. On condition that the antenna device includes the coil 50A without the eddy current-generating means, a first Q value showing the sharpness of a peak of resonance caused by the coil 50A decreases with the rise in temperature based on a temperature change of a resistance value of a conducting wire 51A. On condition that the antenna device includes the eddy current-generating means, a second Q value showing the sharpness of a peak of resonance by the eddy current-generating means increases with the rise in temperature because of current fluctuation corresponding to a temperature change of a resistance value of the eddy current-generating means. A rate of change to a temperature rise of an adjustment Q value showing the sharpness of a peak of resonance based on the coil 50A and the eddy current-generating means is smaller than a rate of change to a temperature rise of the first Q value, and that of the second Q value.SELECTED DRAWING: Figure 1
Inventors:
Kei Tanaka
Shuichi Kikuchi
Rokuka Takanobu
Shuichi Kikuchi
Rokuka Takanobu
Application Number:
JP2016091876A
Publication Date:
February 03, 2021
Filing Date:
April 28, 2016
Export Citation:
Assignee:
Sumida Corporation
International Classes:
H01Q7/06; H01P11/00
Domestic Patent References:
| JP2008187337A |
Attorney, Agent or Firm:
Iat International Patent Business Corporation