Title:
地上子
Document Type and Number:
Japanese Patent JP6993931
Kind Code:
B2
Abstract:
To achieve a frequency variable type or a resonance type ground element that has a high Q value with few variations in the resonance frequency and can be easily manufactured.SOLUTION: An inductor of a resonance circuit of the ground element is composed by forming two-layered spiral conductor patterns 22a, 22b on each of a top surface and a rear surface of a double-sided printed board such that they are connected in parallel with a capacitor 24. The spiral conductor patterns 22a, 22b are formed to have the same winding direction in a planar view such that the conductor patterns are overlapped with each other.SELECTED DRAWING: Figure 3
Inventors:
Atsushi
Application Number:
JP2018096390A
Publication Date:
January 14, 2022
Filing Date:
May 18, 2018
Export Citation:
Assignee:
Kyosan Manufacturing Co., Ltd.
International Classes:
B61L3/12; H01F38/14; H03H5/02
Domestic Patent References:
| JP2007325418A | ||||
| JP2014222707A | ||||
| JP55056736A | ||||
| JP58090713U | ||||
| JP2011031816A |
Attorney, Agent or Firm:
Yasushi Kuroda
Noboru Takekoshi
Inoue Hajime
Noboru Takekoshi
Inoue Hajime
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