Title:
ANTENNA COUPLING CIRCUIT, ANTENNA COUPLING ELEMENT AND ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/217708
Kind Code:
A1
Abstract:
An antenna coupling circuit (10) according to the invention is provided with a first coil (L1), a second coil (L2) and a third coil (L3). A second end (T12) of the first coil (L1) is connected to a first end (T21) of the second coil (L2); the winding direction from a first end (T11) of the first coil (L1) to the second end (T12) thereof is the same as the winding direction from the first end (T21) of the second coil (L2) to a second end (T22) thereof; the second coil (L2) is magnetic-field-coupled with the first coil (L1) and with the third coil (L3); the first end (T11) of the first coil (L1) is a feeding end; the first end (T21) of the second coil (L2) is a feed radiation element connection end; the second end (T22) of the second coil (L2) is a grounding end; a first end (T31) of the third coil (L3) is a non-feed radiation element connection end; and a second end (T32) of the third coil (L3) is a grounding end.
Inventors:
TANABE TOUMU (JP)
ISHIZUKA KENICHI (JP)
ISHIZUKA KENICHI (JP)
Application Number:
PCT/JP2020/008501
Publication Date:
October 29, 2020
Filing Date:
February 28, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01Q1/50; H01Q5/10; H01Q5/378; H01Q21/30
Domestic Patent References:
| WO2012153690A1 | 2012-11-15 | |||
| WO2018101285A1 | 2018-06-07 |
Foreign References:
| JP2014053808A | 2014-03-20 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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