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    ELECTRONIC DEVICE HAVING RECONFIGURABLE MULTI-COIL TRANSFORMER WITH FREQUENCY SELECTIVE FILTERING
    3.
    发明公开
    ELECTRONIC DEVICE HAVING RECONFIGURABLE MULTI-COIL TRANSFORMER WITH FREQUENCY SELECTIVE FILTERING 审中-公开

    公开(公告)号：EP4283868A1

    公开(公告)日：2023-11-29

    申请号：EP23172939.3

    申请日：2023-05-11

    申请人： Apple Inc.

    发明人： WANG, Hongrui ,  KOMIJANI, Abbas

    IPC分类号： H03H7/01 ,  H01F21/00 ,  H01F27/28 ,  H03H7/09 ,  H03H7/38 ,  H03H7/46 ,  H03F1/56 ,  H03H1/00

    摘要： An electronic device (10) may include wireless circuitry (24) having a transformer (68) adjustable between first, second, and third modes. The transformer (68) may have first, second, third, and fourth inductors, L1-L4. The third inductor L3, may be magnetically coupled to the first and second inductors L1, L2, with equal coupling constants. The fourth inductor L4 may be magnetically coupled to the first and second inductors L1, L2 with inverse coupling constants. First and second adjustable capacitors C3, C4 coupled to the third and fourth inductors L3, L4 may receive control signals that place the transformer (68) into a selected one of the first, second, or third modes. In the first mode the transformer (68) exhibits a passband that overlaps first and second bands. In the second mode, the transformer (68) passes signals in the second band while filtering interference in the first band. In the third mode, the transformer (68) passes signals in the first band while filtering interference in the second band.

    ELECTROMAGNETIC INDUCTION DEVICE AND MANUFACTURING METHOD THEREFOR
    4.
    发明公开
    ELECTROMAGNETIC INDUCTION DEVICE AND MANUFACTURING METHOD THEREFOR 审中-公开

    公开(公告)号：EP3457416A1

    公开(公告)日：2019-03-20

    申请号：EP16901936.1

    申请日：2016-05-16

    申请人： Bolymedia Holdings Co., Ltd.

    发明人： HU, Xiaoping

    IPC分类号： H01F21/00 ,  H01F41/02

    摘要： An electromagnetic induction device, comprising a magnetic coating (110) and at least one set of coils (120). The magnetic coating (110) is formed by splicing all magnetic cells together, and is provided therein with at least one cavity. Magnetic division surfaces (AA) between each two magnetic cells are substantially arranged along a magnetic flux loop without cutting off the magnetic flux loop. The coils (120) are placed in a cavity formed by the magnetic coating (110), and the magnetic flux loop in the magnetic coating (110) is formed by the coils (120) after being energized. The overall structure of the magnetic coating (110) comprises at least two magnetically permeable layers (110', 110"). The electromagnetic induction device, on the one hand, can be substantially closed to reduce leakage flux; on the other hand, since there is no air gap on a magnetic unit, the magnetic reluctance is effectively reduced. In addition, the magnetic coating (110) is of a layered structure so that the electromagnetic induction device can be fabricated in a superposed manner, thereby not only reducing the manufacturing difficulty, but also facilitating obtaining a high-performance flat electromagnetic induction device. Also provided is a corresponding method for manufacturing the electromagnetic induction device.

    REACTOR
    9.
    发明公开
    REACTOR 审中-公开

    公开(公告)号：EP3534384A1

    公开(公告)日：2019-09-04

    申请号：EP17865449.7

    申请日：2017-09-19

    申请人： Eguchi High Frequency Co., Ltd. ,  NIPPON STEEL CORPORATION

    发明人： TSURUSAKI, Kazuya ,  EGUCHI, Yohei ,  MAYUMI, Yasuhiro

    IPC分类号： H01F37/00 ,  H01F21/00 ,  H01F27/28

    摘要： Ring-shaped moving holes (2a to 2d) are formed on a first supporting member (2), and holes (4a to 4d) are formed on a second supporting member (4). A first coil (1) is rotated along the moving holes (2a to 2d) in a state where supports (5a to 5d) and bolts (6a to 6d) are inserted in the moving holes (2a to 2d) and the holes (4a to 4d). The first coil (1) and a second coil (3) are fixed so that coil surfaces of the first coil (1) and the second coil (3) become parallel by using the supports (5a to 5d), the bolts (6a to 6d), and nuts (7a to 7d).

    ON-CHIP INTEGRATED VOLTAGE-CONTROLLED VARIABLE INDUCTOR
    10.
    发明公开
    ON-CHIP INTEGRATED VOLTAGE-CONTROLLED VARIABLE INDUCTOR 审中-公开

    公开(公告)号：EP2243162A4

    公开(公告)日：2017-11-01

    申请号：EP09705653

    申请日：2009-01-28

    申请人： IBM

    发明人： DING HANYI ,  MINA ESSAM F ,  WOODS WAYNE H

    IPC分类号： H01F21/00 ,  H01F17/00 ,  H01F21/12 ,  H01L23/58

    CPC分类号： H01F21/005 ,  H01F17/0006 ,  H01F21/12 ,  Y10T29/4902

    摘要： On-chip integrated variable inductors, methods of making and tuning an on-chip integrated variable inductor, and design structures embodying a circuit containing the on-chip integrated variable inductor. The inductor generally includes a signal line configured to carry an electrical signal, a ground line positioned in proximity to the signal line, and at least one control unit electrically coupled with the ground line. The at least one control unit is configured to open and close switch a current path connecting the ground line with a ground potential so as to change an inductance of the signal line.