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Title:
PLANAR COIL AND PLANAR TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2021/024608
Kind Code:
A1
Abstract:
[Problem] To reduce variations in inductance. [Solution] A planar coil comprising: a secondary-side coil substrate 20 on which a plurality of wiring layers 22, 23 are disposed in an overlapping manner; and a plurality of coils L1 to L4 provided on the secondary-side coil substrate 20. On the wiring layer 22, coil patterns L1a to L4a each corresponding to a part of a full circle of the coils L1 to L4 are formed. On the wiring layer 22, coil patterns L1b to L4b each corresponding to the remaining part of the full circle of the coils L1 to L4 are formed. The coil patterns L1a to L4a and the coil patterns L1b to L4b formed on the different wiring layers 22, 23 are connected, in a direction in which the wiring layers 22, 23 overlap, via conduction points 215, whereby the full circle of each of the coils L1 to L4 is formed.

Inventors:
OGASAWARA SATOSHI (JP)
ORIKAWA KOJI (JP)
FUNATO HIROHITO (JP)
HARUNA JUNNOSUKE (JP)
OKAZAKI FUMIHIRO (JP)
Application Number:
PCT/JP2020/022648
Publication Date:
February 11, 2021
Filing Date:
June 09, 2020
Export Citation:
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Assignee:
UNIV HOKKAIDO NAT UNIV CORP (JP)
UNIV UTSUNOMIYA (JP)
MARELLI CORP (JP)
International Classes:
H01F17/00; H01F17/04; H01F19/00; H01F27/28; H01F30/10
Domestic Patent References:
WO2016098538A12016-06-23
Foreign References:
JP2002057035A2002-02-22
JP2013247155A2013-12-09
US20080186120A12008-08-07
JP2015536572A2015-12-21
Attorney, Agent or Firm:
TAKEHARA Naohiko et al. (JP)
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