Magnetic coupling device and communication system

Patent metadata

Field	Value
Publication number	US-2022140865-A1
Application number	US-202217571879-A
Country	US
Kind code	A1
Filing date	Jan 10, 2022
Priority date	Sep 7, 2018
Publication date	May 5, 2022
Grant date	—

Abstract

According to one embodiment, there is provided a magnetic coupling device including a first coil, a second coil, a third coil, a fourth coil, a first constant-potential node and a second constant-potential node. The second coil is electrically connected with one end of the first coil and wound in a direction opposite to a direction in which the first coil is wound. The third coil faces the first coil. The fourth coil faces the second coil. The first constant-potential node is electrically connected with one end of the third coil. The second constant-potential node is electrically connected with one end of the fourth coil.

First claim

1 - 20 . (canceled)

21 . A magnetic coupling device comprising:
a first coil arranged substantially on a first plane. a second coil arranged substantially on the first plane, the first coil being wound from a most inner point to a most outer point along a first rotation direction when seen from a vertical direction perpendicular to the first plane, the second coil being wound from a most outer point to a most inner point along a second rotation direction when seen from the vertical direction, the second rotation direction being opposite to the first rotation direction; a third coil facing the first coil: a fourth coil facing the second coil; a first constant-potential node electrically connected with one end of the third coil; and a second constant-potential node electrically connected with one end of the fourth coil.

22 . The magnetic coupling device according to claim 21 , wherein
the second coil is electrically connected with the first coil at each most outer point, and the third coil is separated from the fourth coil.

23 . The magnetic coupling device according to claim 21 , wherein
the third coil is to arranged substantially on a second plane, the second plane being apart from the first plane in the vertical direction, the fourth coil is arranged substantially on the second plane.

24 . The magnetic coupling device according to claim 22 , wherein
the third coil is arranged substantially on a second plane, the second plane being apart from the first plane in the vertical direction; and the fourth coil is arranged substantially on the second plane.

25 . The magnetic coupling device according to claim 21 , further comprising
a first capacitor element electrically connected with another end of the third coil; and a second capacitor element electrically connected with another end of the fourth coil.

26 . The magnetic coupling device according to claim 22 , wherein further comprising:
a first capacitor element electrically connected with another end of the third coil; and a second capacitor element electrically connected with another end of the fourth coil.

27 . The magnetic coupling device according to claim 21 , wherein
the third coil is wound from a most inner point to a most outer point along the first rotation direction when seen from the vertical direction, and the fourth coil is wound from a most inner point to a most outer point along the first rotation direction when seen from the vertical direction.

28 . The magnetic coupling device according to claim 22 , wherein
the third coil is wound from a most inner point to a most outer point along the first rotation direction when seen from the vertical direction, and the fourth coil is wound from a most inner point to a most outer point along the first rotation direction when seen from the vertical direction.

29 . The magnetic coupling device according to claim 21 , wherein
the third coil is wound from a most inner point to a most outer point along the first rotation direction when seen from the vertical direction, and the fourth coil is wound from a most inner point to a most outer point along the second rotation direction when seen from the vertical direction.

30 . The magnetic coupling device according to claim 22 , wherein
the third coil is wound from a most inner point to a most outer point along the first rotation direction when seen from the vertical direction, and the fourth coil is wound from a most inner point to a most outer point along the second rotation direction when seen from the vertical direction.

31 . The magnetic coupling device according to claim 21 , wherein
the third coil is separated from the fourth coil, the third coil is arranged on a second plane and is wound from a most inner point to a most outer point, the second plane being apart from the first plane in the vertical direction, the fourth coil is arranged on the second plane and is wound from a most inner point to a most outer point, the most outer point of the third coil is electrically connected to the first constant-potential node, and the most outer point of the fourth coil is electrically connected to the second constant-potential node.

32 . The magnetic coupling device according to claim 25 , further comprising a pair of a first input node and a second input node,
wherein the first capacitor element electrically connected between the first input node and the third coil; and the second capacitor element electrically connected between the second input node and the fourth coil.

33 . The magnetic coupling device according to claim 31 , further comprising:
a pair of a first input node and a second input node. a first capacitor element electrically connected between the first input node and the most inner point of the third coil; and a second capacitor element electrically connected between the second input node and the most inner point of the fourth coil.

34 . The magnetic coupling device according to claim 25 , further comprising a pair of a first output node and a second output node,
wherein the first capacitor element is electrically connected between the first output node and the third coil, and the second capacitor element is electrically connected between the second output node and the fourth coil.

35 . The magnet coupling device according to claim 31 , further comprising
a pair of a first output node and a second output node; a first capacitor element electrically connected between the first output node and the most inner point of the third coil, and a second capacitor element electrically connected between the second output node and the most inner point of the fourth coil.

36 . A communication system comprising:
a transmission circuit; and the magnetic coupling device according to claim 21 .

37 . The communication system according to claim 36 , wherein
the magnetic coupling device comprises a pair of a first input node and a second input node, and the transmission circuit comprises a first output node electrically connected to the first input node of the magnetic coupling device and comprises a second output node electrically connected to the second input node of the magnetic coupling device.

38 . The communication system according to claim 36 , wherein
the magnetic coupling device comprises a pair of a first input node and a second input node, and the transmission circuit comprises an output node electrically connected to both of the first input node of the magnetic coupling device and the second input node of the magnetic coupling device.

39 . A communication system comprising
a reception circuit; and the magnetic coupling device according to claim 21 .

40 . The communication system according to claim 39 , wherein
the magnetic coupling device comprises a pair of a first output node and a second output node, and the reception circuit comprises a first input node electrically connected to the first output node of the magnetic coupling toes and comprises a second input node electrically connected to the second output node of the magnetic coupling device.

Assignees

• Toshiba Kk
• Toshiba Electronic Devices & Storage Corp

Inventors

• Uo Toyoaki
• Suzuki Tsuneo
• Ishihara Hiroaki

Classifications

• H03H7/00

  Multiple-port networks comprising only passive electrical elements as network components · CPC title

• H04B5/0087 Primary

  Electricity · mapped topic

• H04B5/263 Primary

  Multiple coils at either side · CPC title

• H04B5/48

  Transceivers · CPC title

• H01F2027/2809

  on stacked layers · CPC title