公开(公告)号：US06282009B1

公开(公告)日：2001-08-28

申请号：US09245838

申请日：1999-02-08

Applicant: Hitoshi Tada ,  Tomoko Kadowaki

Inventor： Hitoshi Tada ,  Tomoko Kadowaki

IPC: G02F103

CPC classification number: G02F1/025 ,  G02F2201/066 ,  G02F2201/122

Abstract: A light modulator having a reduced parasitic static capacitance includes a semiconductor substrate having a mesa section and a bonding pad section. A primary insulating film on the substrate continuously covers the mesa section and the bonding pad section. After a mask has been formed on a portion of the primary insulating film opposite the bonding pad section, the remaining portion of the primary insulating film is etched, followed by removal of the mask. After the removal of the mask, a second insulating film is formed continuously covering the primary insulating film opposite the bonding pad section and the mesa section so that a relatively thick insulating layer is present only opposite the bonding pad section.

Abstract translation: 具有降低的寄生静电电容的光调制器包括具有台面部分和接合焊盘部分的半导体衬底。 基板上的主绝缘膜连续地覆盖台面部分和接合焊盘部分。 在与绝缘焊盘部分相对的一次绝缘膜的一部分上形成掩模之后，蚀刻一次绝缘膜的剩余部分，然后除去掩模。 在去除掩模之后，形成连续地覆盖与接合焊盘部分和台面部分相对的主绝缘膜的第二绝缘膜，使得相对较厚的绝缘层仅与接合焊盘部分相对。

公开(公告)号：US06281768B1

公开(公告)日：2001-08-28

申请号：US09439891

申请日：1999-11-12

Applicant: Hitoshi Tada ,  Motoharu Hiroshima ,  Hideyuki Kato

Inventor： Hitoshi Tada ,  Motoharu Hiroshima ,  Hideyuki Kato

IPC: H01P120

CPC classification number: H01P1/2136 ,  H01P1/2056

Abstract: There is disclosed a dielectric filter comprising: a plurality of resonant lines disposed in a dielectric block, in a dielectric substrate, or on a dielectric substrate; wherein the open ends of at least one adjacent pair of the resonant lines are oriented in the same direction to be combline-coupled, a first trap resonator resonant line and a signal inputting/outputting excitation line are each interdigitally coupled to one of the plurality of resonant lines, and a second trap-resonator resonant line is interdigitally coupled to the excitation line.

Abstract translation: 公开了一种介质滤波器，包括：多个谐振线路，布置在电介质块中，介于电介质基片之中，或介于电介质基片上; 其中至少一对相邻谐振线路的开路端在相同的方向上取向以进行梳状耦合，第一陷波谐振器谐振线路和信号输入/输出激励线路每一个互指向耦合到多个 谐振线路和第二陷波谐振器谐振线路与指示线耦合。

公开(公告)号：US5760666A

公开(公告)日：1998-06-02

申请号：US694647

申请日：1996-08-09

Applicant: Hiroshi Tada ,  Hajime Suemasa ,  Haruo Matsumoto ,  Takashi Maruyama ,  Hideyuki Kato ,  Yasuo Yamada ,  Hirohumi Miyamoto ,  Hitoshi Tada

Inventor： Hiroshi Tada ,  Hajime Suemasa ,  Haruo Matsumoto ,  Takashi Maruyama ,  Hideyuki Kato ,  Yasuo Yamada ,  Hirohumi Miyamoto ,  Hitoshi Tada

IPC: H01P1/205 ,  H01P1/213 ,  H01P5/08 ,  H01P7/04 ,  H05K1/02 ,  H05K1/14 ,  H05K3/34 ,  H05K3/36 ,  H01P1/202

CPC classification number: H05K1/0243 ,  H01P1/2056 ,  H05K1/141 ,  H05K2201/049 ,  H05K2201/09181 ,  H05K2201/10068 ,  H05K2201/10969 ,  H05K3/3442 ,  H05K3/3452 ,  H05K3/368

Abstract: A dielectric resonant component includes at least one dielectric multistage resonator including one dielectric block, a plurality of inner conductor formation holes formed in the one dielectric block, an inner conductor formed on an inner surface of each of the inner conductor formation holes, and an outer conductor covering a substantially entire outer surface of the one dielectric block, the dielectric multistage resonator constituting a plurality of dielectric resonators in the one dielectric block; and a mount substrate fixedly mounted on the dielectric multistage resonator, for transmitting a signal transmission between each of the dielectric resonators of the dielectric multistage resonator and an external circuit board, when the dielectric resonant component is mounted on the external circuit board. The dielectric multistage resonator further includes a pair of input/output electrodes, and the mount substrate includes a unit for connecting the input/output electrodes of the dielectric multistage resonator to a pair of input/output electrodes formed on the circuit board.

Abstract translation: 电介质谐振元件包括至少一个电介质多级谐振器，其包括一个介质块，形成在一个介质块中的多个内导体形成孔，形成在每个内导体形成孔的内表面上的内导体， 导电体覆盖一个介质块的基本上整个的外表面，电介质多级谐振器在该介电块中构成多个介质谐振器; 以及固定地安装在电介质多级谐振器上的安装基板，用于在电介质多级谐振器的每个介质谐振器和外部电路板之间传输信号，当介质谐振元件安装在外部电路板上时。 电介质多级谐振器还包括一对输入/输出电极，并且安装基板包括用于将电介质多级谐振器的输入/输出电极连接到形成在电路板上的一对输入/输出电极的单元。

公开(公告)号：US08519501B2

公开(公告)日：2013-08-27

申请号：US13477128

申请日：2012-05-22

Applicant: Hitoshi Tada ,  Yasuo Nakajima ,  Yasuhiro Kunitsugu

Inventor： Hitoshi Tada ,  Yasuo Nakajima ,  Yasuhiro Kunitsugu

IPC: H01L31/0232

CPC classification number: H01L31/02327 ,  H01L31/035281 ,  H01L31/105 ,  Y02E10/50

Abstract: A back-surface-incidence semiconductor light element includes: a semiconductor substrate of a first conductivity type; a first semiconductor layer of a first conductivity type on the semiconductor substrate; a light absorbing layer on the first semiconductor layer; a second semiconductor layer on the light absorbing layer; and an impurity diffusion region of a second conductivity type in a portion of the second semiconductor layer. A region including a p-n junction between the first semiconductor layer and the impurity diffusion region, and extending through the light absorbing layer, is a light detecting portion that detects light incident on a back surface of the semiconductor substrate. A groove in the back surface of the semiconductor substrate surrounds the light detecting portion, as viewed in plan.

Abstract translation: 背面入射半导体光元件包括：第一导电类型的半导体衬底; 半导体衬底上的第一导电类型的第一半导体层; 在第一半导体层上的光吸收层; 在所述光吸收层上的第二半导体层; 以及在第二半导体层的一部分中具有第二导电类型的杂质扩散区。 包括第一半导体层和杂质扩散区之间并延伸穿过光吸收层的p-n结的区域是检测入射在半导体衬底的背面上的光的光检测部分。 半导体衬底的后表面中的凹槽围绕光检测部分，如在平面图中所示。

公开(公告)号：US20120206217A1

公开(公告)日：2012-08-16

申请号：US13368485

申请日：2012-02-08

Applicant: Takahiro Okada ,  Hideki Tsukamoto ,  Hitoshi Tada

Inventor： Takahiro Okada ,  Hideki Tsukamoto ,  Hitoshi Tada

IPC: H01P1/205

CPC classification number: H01P1/2056

Abstract: A band-elimination filter (BEF) that includes a coaxial dielectric resonator block, a substrate, and first, second, and third inductance elements. The coaxial dielectric resonator block includes inner conductors and an outer conductor, and forms coaxial dielectric resonators. The first inductance element is between a signal transmission path connected to one of the coaxial dielectric resonators via a series resonant capacitor and a signal transmission path connected to the other one of the coaxial dielectric resonators via a series resonant capacitor. The second inductance element is between one end of the first inductance element and the ground, and the third inductance elements is between the other end of the first inductance element and the ground.

Abstract translation: 一种带除滤波器（BEF），其包括同轴介质谐振器块，衬底以及第一，第二和第三电感元件。 同轴介质谐振器块包括内导体和外导体，并形成同轴介质谐振器。 第一电感元件在经由串联谐振电容器连接到一个同轴介质谐振器的信号传输路径和经由串联谐振电容器连接到另一个同轴介质谐振器的信号传输路径之间。 第二电感元件位于第一电感元件的一端和地之间，第三电感元件位于第一电感元件的另一端与地之间。

公开(公告)号：US07390683B2

公开(公告)日：2008-06-24

申请号：US11375016

申请日：2006-03-15

Applicant: Atsushi Sugitatsu ,  Hitoshi Tada ,  Susumu Noda

Inventor： Atsushi Sugitatsu ,  Hitoshi Tada ,  Susumu Noda

IPC: H01L21/00

CPC classification number: H01S5/0425 ,  B82Y20/00 ,  G02B6/12004 ,  G02B6/1225 ,  G02F1/025 ,  G02F2202/32 ,  H01L2933/0083 ,  H01S5/0424 ,  H01S5/105 ,  H01S5/1085 ,  H01S5/2004 ,  H01S5/3054 ,  H01S5/32

Abstract: A semiconductor device has a two-dimensional slab photonic crystal structure in which a substrate supports a sheet-like slab layer including, sequentially stacked, a lower cladding layer, an active layer, and an upper cladding layer. A periodic refractive index profile structure, in surfaces of the stacked layers, introduces a linear defect region that serves as a waveguide. A p-type region and an n-type region in the slab layer define a pn junction surface at a predetermined angle with respect to the surfaces of the stacked layers in the slab layer.

Abstract translation: 半导体器件具有二维平板光子晶体结构，其中基板支撑包括顺序堆叠的下包层，有源层和上包层的片状板层。 在堆叠层的表面中的周期性折射率分布结构引入用作波导的线性缺陷区域。 板状层中的p型区域和n型区域相对于板坯层中的堆叠层的表面以预定的角度限定pn结表面。

公开(公告)号：US20050141800A1

公开(公告)日：2005-06-30

申请号：US11012278

申请日：2004-12-16

Applicant: Yasunori Miyazaki ,  Hitoshi Tada ,  Yoshihiko Hanamaki

Inventor： Yasunori Miyazaki ,  Hitoshi Tada ,  Yoshihiko Hanamaki

IPC: G02F1/025 ,  G02F1/01

CPC classification number: G02F1/025

Abstract: A waveguide semiconductor optical device has a pin junction on a semi-insulating substrate. The pin junction consists of an n-type cladding layer, an i-type absorption layer, and a p-type cladding layer. The waveguide semiconductor optical device includes a dopant impurity concentration not higher than 1016 cm-3 in the i-type absorption layer.

Abstract translation: 波导半导体光学器件在半绝缘衬底上具有pin结。 pin结由n型包覆层，i型吸收层和p型覆层组成。 该波导半导体光学器件包括在i型吸收层中不高于10 16 cm -3的掺杂剂杂质浓度。

公开(公告)号：US06798552B2

公开(公告)日：2004-09-28

申请号：US10197559

申请日：2002-07-18

Applicant: Hitoshi Tada

Inventor： Hitoshi Tada

IPC: G02F103

CPC classification number: B82Y20/00 ,  G02F1/01708 ,  G02F1/025 ,  G02F2201/066 ,  G02F2201/07

Abstract: A band discontinuity reduction layer having a band gap energy larger than that of that of an MQW (multiple quantum well) absorption layer and smaller than that of a p-InP clad layer is provided between the MQW absorption layer and the p-InP clad layer. In addition, a band discontinuity reduction layer having a band gap energy larger than that of the MQW absorption layer and smaller than that of an n-InP clad layer is provided between the MQW absorption layer and the n-InP clad layer. Consequently, as a pile-up of carriers is suppressed, a semiconductor light modulator with an enhanced response speed can be obtained.

Abstract translation: 在MQW吸收层和p-InP覆盖层之间提供具有比MQW（多量子阱）吸收层的带隙能量大的带隙能量并且小于p-InP覆盖层的带隙能量的带间断层， 。 此外，在MQW吸收层和n-InP覆盖层之间设置有具有比MQW吸收层的带隙能量大的带隙能量并且小于n-InP覆盖层的带隙能量减少层。 因此，随着载流子的堆积被抑制，可以获得具有增强的响应速度的半导体光调制器。

公开(公告)号：US06384955B2

公开(公告)日：2002-05-07

申请号：US09839120

申请日：2001-04-23

Applicant: Hitoshi Tada ,  Tomoko Kadowaki

Inventor： Hitoshi Tada ,  Tomoko Kadowaki

IPC: G02F103

CPC classification number: G02F1/025 ,  G02F2201/066 ,  G02F2201/122

Abstract: A light modulator includes a semiconductor substrate having a main surface, a rear surface, and a grounding conductor on the rear surface. A wave guide section having a width is located on the semiconductor substrate. A bonding pad section on the semiconductor substrate is located adjacent to the wave guide section and an insulating layer covers the main surface of the semiconductor substrate. A portion of the insulating layer immediately opposite the bonding pad section includes a multiple layer structure of insulating films. An electrode opposite the bonding pad section is electrically connected to the wave guide section.

Abstract translation: 光调制器包括在后表面上具有主表面，后表面和接地导体的半导体衬底。 具有宽度的波导部分位于半导体衬底上。 半导体衬底上的接合焊盘部分位于波导部分附近，并且绝缘层覆盖半导体衬底的主表面。 与接合焊盘部分相对的绝缘层的一部分包括绝缘膜的多层结构。 与接合焊盘部分相对的电极电连接到波导部分。

公开(公告)号：US6054910A

公开(公告)日：2000-04-25

申请号：US260271

申请日：1999-03-02

Applicant: Hitoshi Tada ,  Hiromi Ogura

Inventor： Hitoshi Tada ,  Hiromi Ogura

IPC: H01P1/205 ,  H01P7/04 ,  H01P1/202

CPC classification number: H01P1/2056

Abstract: A dielectric filter comprising: a dielectric block including a first elongated sub-block and a second elongated sub-block each having a corresponding pair of longitudinally opposing end faces, and an outer surface, said sub-blocks being disposed adjacent one another; a first longitudinally extending through-hole disposed between the first pair of longitudinally opposing end faces of said first sub-block, the first through-hole having two outer ends and an inner surface; a first inner conductor formed on the inner surface of said first through-hole, said first inner conductor having outer ends; an outer conductor formed on the outer surface of said dielectric block but not electrically coupled to the outer ends of the first inner conductor such that the outer ends of the first inner conductor are open-circuited; a first connection conductor through which a predetermined part of the first inner conductor between its outer ends is connected to said outer conductor; a second longitudinally extending through-hole disposed between the second pair of longitudinally opposing end faces of said second sub-block, the second through-hole having two outer ends and an inner surface; a second inner conductor formed on the inner surface of said second through-hole, said second inner conductor being electrically connected to said outer conductor at its outer ends such that they are short-circuited, said inner conductor having a pair of open-circuited inner ends disposed at a predetermined location between its two outer ends, wherein said first and second sub-blocks of said dielectric block are longitudinally shifted relative to one another.

Abstract translation: 一种介质滤波器，包括：介质块，包括第一细长子块和第二细长子块，每个子块具有相应的一对纵向相对的端面和外表面，所述子块彼此相邻布置; 第一纵向延伸通孔，设置在所述第一子块的所述第一对纵向相对端面之间，所述第一通孔具有两个外端和内表面; 形成在所述第一通孔的内表面上的第一内导体，所述第一内导体具有外端; 形成在所述介质块的外表面上但不电耦合到所述第一内导体的外端的外导体，使得所述第一内导体的外端开放; 第一连接导体，其外端之间的第一内导体的预定部分通过该第一连接导体连接到所述外导体; 第二纵向延伸的通孔，设置在所述第二子块的所述第二对纵向相对端面之间，所述第二通孔具有两个外端和内表面; 形成在所述第二通孔的内表面上的第二内部导体，所述第二内部导体在其外端电连接到所述外部导体，使得它们被短路，所述内部导体具有一对开路的内部导体 端部设置在其两个外端之间的预定位置处，其中所述介质块的所述第一和第二子块相对于彼此纵向移位。