公开(公告)号：US11431071B2

公开(公告)日：2022-08-30

申请号：US17160559

申请日：2021-01-28

Applicant: TDK CORPORATION

Inventor： Yuta Ashida ,  Masahiro Tatematsu ,  Shuhei Sawaguchi ,  Shigemitsu Tomaki ,  Tetsuzo Goto ,  Takeshi Kijima

IPC: H01P5/10 ,  H03H7/42 ,  H03H7/09 ,  H01P3/08 ,  H01G4/30 ,  H03H7/01 ,  H03H1/00

Abstract: A balun includes first to fourth lines and a stack. A plurality of first conductor layers forming the first and third lines are located in a first region in the stack. A plurality of second conductor layers forming the second and fourth lines are located in a second region in the stack. A ground conductor layer is located closer to the second region than to the first region. The plurality of second conductor layers include a conductor layer pair where a distance between two conductor layers is smallest.

公开(公告)号：US09893407B2

公开(公告)日：2018-02-13

申请号：US15187922

申请日：2016-06-21

Applicant: TDK CORPORATION

Inventor： Noriaki Ootsuka ,  Takeshi Kijima ,  Yasunori Sakisaka

IPC: H01P5/18 ,  H03H7/38 ,  H03H7/48 ,  H03H1/00

CPC classification number: H01P5/18 ,  H01P5/187 ,  H03H7/48 ,  H03H2001/0085

Abstract: A directional coupler includes: a main line connecting a first port and a second port; first to third subline sections each of which is formed of a line configured to be electromagnetically coupled to the main line; a first matching section provided between the first subline section and the second subline section; a second matching section provided between the second subline section and the third saline section; and a stack for integrating these components. The stack includes a plurality of dielectric layers and a plurality of conductor layers stacked on each other. Each of the first and second matching sections includes two inductors each formed using one or more of the conductor layers, and a capacitor formed using two or more of the conductor layers.

公开(公告)号：US09893408B2

公开(公告)日：2018-02-13

申请号：US15206614

申请日：2016-07-11

Applicant: TDK CORPORATION

Inventor： Yuta Ashida ,  Yasunori Sakisaka ,  Noriaki Ootsuka ,  Tetsuzo Goto ,  Takeshi Kijima

IPC: H01P5/18 ,  H03H7/01 ,  H01P3/08 ,  H03H1/00

CPC classification number: H01P5/18 ,  H01P5/187 ,  H03H7/0115 ,  H03H2001/0078

Abstract: A directional coupler includes: a first to a fourth port; a main line connecting the first and second ports; a first to a fourth subline section electromagnetically coupled to the main line; a first to a third matching section; and a stack. The first subline, first matching, third subline, third matching, fourth subline, second matching, and second subline sections are arranged in this order between the third and fourth port. The first and second matching sections include an inductor connecting two subline sections located on opposite sides of the matching section. Each of one or more conductor layers used to form the inductor includes two connection portions for electrical connection to respective other elements, and a line portion connecting the two connection portions. The inductor excluding the connection portions does not include potions that overlap each other when viewed in the stacking direction of the stack.

公开(公告)号：US10084225B2

公开(公告)日：2018-09-25

申请号：US15367578

申请日：2016-12-02

Applicant: TDK CORPORATION

Inventor： Yuta Ashida ,  Noriaki Ootsuka ,  Takeshi Kijima ,  Yasunori Sakisaka ,  Tetsuzo Goto

IPC: H01P5/18 ,  H03H7/18

CPC classification number: H01P5/18 ,  H01P5/187 ,  H03H7/185

Abstract: A directional coupler includes a first to a fourth port, a main line connecting the first port and the second port, a first and a second subline section configured to be electromagnetically coupled to the main line, and a phase shifter. The first subline section, the phase shifter, and the second subline section are arranged in this order in series between the third port and the fourth port. The phase shifter outputs a signal that is phase-delayed relative to an input signal. The phase delay amount of the output signal of the phase shifter relative to the input signal increases with increasing frequency of the input signal. A frequency twice as high as the frequency of the input signal at which the phase delay amount is 90 degrees is lower than the frequency of the input signal at which the phase delay amount is 180 degrees.

公开(公告)号：US09653771B2

公开(公告)日：2017-05-16

申请号：US14969368

申请日：2015-12-15

Applicant: TDK CORPORATION

Inventor： Noriaki Ootsuka ,  Takeshi Kijima ,  Yasunori Sakisaka ,  Yuta Ashida

IPC: H01P5/18 ,  H03H7/38

CPC classification number: H01P5/184 ,  H01P5/185 ,  H01P5/187 ,  H03H7/383

Abstract: A directional coupler includes: a main line connecting an input port and an output port; first to third subline sections each of which is formed of a line configured to be electromagnetically coupled to the main line; a first matching section provided between the first subline section and the second subline section; and a second matching section provided between the second subline section and the third subline section. The first and second matching sections are configured to cause changes in phase of high frequency signals passing therethrough, and have mutually different characteristics so as to create two attenuation poles in the frequency response of the coupling of the directional coupler.