公开(公告)号：US20190077655A1

公开(公告)日：2019-03-14

申请号：US15255757

申请日：2016-09-02

Applicant: TDK CORPORATION

Inventor： Jotaro AKIYAMA ,  Kenji ENDOU ,  Takashi AOYAGI ,  Katsunori OSANAI ,  Tohru INOUE

IPC: B81B7/02 ,  B81B7/00 ,  B81B3/00

CPC classification number: B81B7/02 ,  B81B3/0097 ,  B81B7/008 ,  B81B2201/014 ,  B81B2203/0118 ,  B81B2203/04 ,  H01H1/00 ,  H01H1/0036 ,  H01H2001/0084 ,  H01H2057/006

Abstract: A MEMS switch includes a first signal line provided in a first beam, a first GND adjacent to the first signal line, a second signal line provided in a second beam, and a second GND adjacent to the second signal line. A contact terminal is fixed to any one of the first signal line and the second signal line and performs connection between the first signal line and the second signal line according to deformation of the first beam.

公开(公告)号：US20230059850A1

公开(公告)日：2023-02-23

申请号：US17797199

申请日：2021-01-20

Applicant: TDK Corporation

Inventor： Shinji IWATSUKA ,  Kenji ENDOU ,  Hiroki HARA

IPC: G02F1/225 ,  G02F1/035 ,  G02F1/21

Abstract: To provide an optical modulation element capable of suppressing electrode loss at a low frequency of 50 GHz or less, and suppressing radiation loss at a high frequency of 50 GHz or more. An optical modulation element comprises: a substrate; and at least one interaction part provided on the substrate. The interaction part includes: first and second optical waveguides formed adjacent to each other on the substrate; and first and second signal electrodes provided so as to oppose the first and second optical waveguides respectively. o ground electrode is provided in a nearby region of the interaction part, and a ground electrode is provided in the vicinity of at least one of an input part and a terminal part electrically connected to each of the first and second signal electrodes.

公开(公告)号：US20130335289A1

公开(公告)日：2013-12-19

申请号：US13896594

申请日：2013-05-17

Applicant: TDK CORPORATION

Inventor： Yasuyuki HARA ,  Kenji ENDOU ,  Tetsuya SHIBATA

IPC: H01Q1/52

CPC classification number: H01Q1/52 ,  H01Q1/243 ,  H01Q1/521 ,  H01Q9/42 ,  H01Q21/28

Abstract: The present invention is to provide an antenna device with the isolation among feedpoints being further improved. In order to achieve this goal, the present invention provides an antenna device provided with a substrate having a ground area, and a first conductor, a second conductor and a third conductor. In the antenna, one end of the second conductor is connected to the ground area via a first feedpoint and the other end of the second conductor is connected to the first conductor. A second feedpoint is included serially in the third conductor at any position. Further, at least part of the third conductor is disposed opposite to the first conductor, and both ends of the third conductor are connected to the ground area.

Abstract translation: 本发明是提供一种天线装置，进一步提高馈电点之间的隔离。 为了实现这一目标，本发明提供一种天线装置，其具有地面积的基板和第一导体，第二导​​体和第三导体。 在天线中，第二导体的一端通过第一馈电点连接到接地区，而第二导体的另一端连接到第一导体。 在任何位置的第三个导体中连续包含第二个馈入点。 此外，第三导体的至少一部分设置成与第一导体相对，并且第三导体的两端连接到接地区域。

公开(公告)号：US20230040729A1

公开(公告)日：2023-02-09

申请号：US17789994

申请日：2021-03-22

Applicant: TDK CORPORATION

Inventor： Kenji ENDOU ,  Shinji IWATSUKA ,  Hiroki HARA

IPC: G02F1/225 ,  G02F1/21

Abstract: An optical modulator includes a plurality of optical modulation units having a Mach-Zehnder type optical waveguide consisting of two optical waveguides and a high-frequency line pair arranged along the two optical waveguides and consisting of two signal electrodes for applying a pair of differential high-frequency signals, and a plurality of high-resistance conductive films are provided between adjacent high-frequency line pairs separated from the high-frequency line pair.

公开(公告)号：US20200272020A1

公开(公告)日：2020-08-27

申请号：US16799763

申请日：2020-02-24

Applicant: FUJITSU OPTICAL COMPONENTS LIMITED ,  TDK Corporation

Inventor： Yasuhiro OHMORI ,  Masaharu DOI ,  Shintaro TAKEUCHI ,  Takehito TANAKA ,  Yoshinobu KUBOTA ,  Shinji IWATSUKA ,  Kenji ENDOU ,  Hiroki HARA ,  Toshinori MATSUURA ,  Takashi KIKUKAWA

IPC: G02F1/225 ,  G02F1/03

Abstract: An optical modulator is provided with a ridge-shaped optical waveguide formed of a dielectric thin film having electro-optic effect, a buffer layer covering the optical waveguide, a signal electrode formed on the buffer layer so as to be opposed to the optical waveguide through the buffer layer; a ground electrode formed on the buffer layer together with the signal electrode, and a dielectric film having a higher dielectric constant than air and covering at least a part of exposed surfaces of the signal electrode and ground electrode and exposed surfaces of the buffer layer.