公开(公告)号：US5371477A

公开(公告)日：1994-12-06

申请号：US924937

申请日：1992-08-05

申请人： Hikaru Ikeda ,  Toshio Ishizaki ,  Hiroaki Kosugi ,  Yoshishige Yoshikawa ,  Kunihiko Kanazawa

发明人： Hikaru Ikeda ,  Toshio Ishizaki ,  Hiroaki Kosugi ,  Yoshishige Yoshikawa ,  Kunihiko Kanazawa

IPC分类号： H03F3/193 ,  H03G3/30 ,  H03G3/10

CPC分类号： H03G3/3047 ,  H03F3/1935

摘要： A linear amplifier has an input signal controller for controlling the level of an input signal to a field-effect transistor (FET) using a DC gate current measured by a gate current detector arranged between a gate bias terminal and a drain bias terminal of the FET and a nonlinear resistor whose resistance can be varied corresponding to an inter-terminal voltage between the gate and the drain of the FET, in which the voltage at the gate of the FET is adjusted to a rate such that a particular drain current which has been determined just before the starting of burst signal transmission corresponding to the level of a power output of the linear amplifier is obtained, and is maintained for a given period of time.

摘要翻译： 线性放大器具有输入信号控制器，用于使用布置在FET的栅极偏置端子和漏极偏置端子之间的栅极电流检测器测量的DC栅极电流来控制到场效应晶体管（FET）的输入信号的电平 以及一个非线性电阻，其电阻可以相应于FET的栅极和漏极之间的端子间电压而变化，其中FET的栅极处的电压被调节到使得具有特定的漏极电流的速率 在与线性放大器的功率输出的电平相对应的脉冲串信号传输开始之前确定，并且保持给定的时间段。

公开(公告)号：US5274388A

公开(公告)日：1993-12-28

申请号：US836431

申请日：1992-02-18

申请人： Toshio Ishizaki ,  Hiroaki Kosugi ,  Tomoki Uwano ,  Toshio Sekiguchi

发明人： Toshio Ishizaki ,  Hiroaki Kosugi ,  Tomoki Uwano ,  Toshio Sekiguchi

IPC分类号： H01Q3/24 ,  H01Q1/36 ,  H01Q9/16 ,  H01Q9/30 ,  H01Q21/29 ,  H04B7/10

CPC分类号： H01Q21/29 ,  H01Q1/362

摘要： A small-sized antenna device is used for portable telephone equipment and is capable of preventing the receiving strength from being degraded due to a change in the application environment as well as the mounting thereof onto a small radio equipment case. The antenna device has a linear antenna for producing an electric current flux and a coil-shaped antenna for producing a magnetic current flux including a plurality of half-wavelength helical coils connected in series so as to have two adjacent coils coiled in opposite directions with respect to each other, and carries out polarization diversity. Degradation in the characteristics of both antennas due to differences in operational principle can be prevented from taking place simultaneously, resulting in realizing a good reception of a radiowave. In addition, the antenna axes of both antennas can be disposed in parallel and close to each other, thus miniaturizing the device itself.

摘要翻译： 小型天线装置用于便携式电话设备，并且能够防止由于应用环境的变化以及其安装到小型无线电设备情况而导致的接收强度劣化。 天线装置具有用于产生电流通量的线性天线和用于产生包括多个串联连接的多个半波长螺旋线圈的磁通量的线圈形天线，以便具有相对于 并进行极化分集。 可以防止由于操作原理的差异导致的两个天线的特性的降低同时发生，从而实现对无线电波的良好接收。 此外，两个天线的天线轴线可以彼此并联并且彼此靠近，从而使设备本身小型化。

公开(公告)号：US08558622B2

公开(公告)日：2013-10-15

申请号：US13379450

申请日：2010-07-09

申请人： Takashi Uno ,  Kazuhiro Yahata ,  Toshio Ishizaki

发明人： Takashi Uno ,  Kazuhiro Yahata ,  Toshio Ishizaki

IPC分类号： H03F3/191

CPC分类号： H03F3/245 ,  H03F1/32 ,  H03F1/3205 ,  H03F1/56 ,  H03F3/189 ,  H03F3/193 ,  H03F3/195 ,  H03F2200/108 ,  H03F2200/15 ,  H03F2200/18 ,  H03F2200/222 ,  H03F2200/387 ,  H03F2200/391 ,  H03F2200/423 ,  H03F2203/7215

摘要： A radio frequency power amplifier includes a transistor and amplifies a radio frequency signal of a first frequency; an input matching circuit connected to an input terminal of the transistor; and an output matching circuit connected to an output terminal of the transistor. A reactance control circuit includes one end connected to the output terminal of the transistor, and the other end connected to an input terminal of an output matching circuit and a bias terminal. The reactance control circuit has a reactance which resonates at a second frequency with a parasitic capacitance of the transistor at the output terminal of the transistor, and the second frequency is identical or close to the first frequency.

摘要翻译： 射频功率放大器包括晶体管，并放大第一频率的射频信号; 连接到晶体管的输入端的输入匹配电路; 以及连接到晶体管的输出端子的输出匹配电路。 电抗控制电路包括连接到晶体管的输出端的一端，另一端连接到输出匹配电路和偏置端的输入端。 电抗控制电路具有以第二频率与晶体管的输出端子处的晶体管的寄生电容谐振的电抗，第二频率与第一频率相同或接近。

公开(公告)号：US20100207706A1

公开(公告)日：2010-08-19

申请号：US12680997

申请日：2008-09-26

申请人： Masaya Tamura ,  Toshio Ishizaki

发明人： Masaya Tamura ,  Toshio Ishizaki

IPC分类号： H03H7/01

CPC分类号： H03H7/0115 ,  H01P1/203 ,  H03H7/175 ,  H03H7/1775 ,  H03H7/1791

摘要： A left-handed filter of the present invention includes an interstage coupling element connected to a first capacitor and a ground, a second capacitor connected to the interstage coupling element, a third capacitor connected to the second capacitor, a first inductor connected to the connection point of a fourth capacitor and the second capacitor, and the ground, a second inductor connected to a fifth capacitor and the ground, a first input and output coupling element connected to a sixth capacitor, and a second input and output coupling element connected to the third capacitor. The first and second capacitors, the third and sixth capacitors, the first and second inductors, and third and fourth inductors are respectively arranged in symmetrical positions with respect to an interstage coupling element.

摘要翻译： 本发明的左旋滤波器包括连接到第一电容器和地的级间耦合元件，连接到级间耦合元件的第二电容器，连接到第二电容器的第三电容器，连接到连接点的第一电感器 第四电容器和第二电容器以及接地，连接到第五电容器和地的第二电感器，连接到第六电容器的第一输入和输出耦合元件以及连接到第三电容器的第三电容器的第三输入和输出耦合元件 电容器。 第一和第二电容器，第三和第六电容器，第一和第二电感器以及第三和第四电感器分别布置在相对于级间耦合元件的对称位置。

公开(公告)号：US07054608B2

公开(公告)日：2006-05-30

申请号：US10044541

申请日：2002-01-11

申请人： Takehiko Yamakawa ,  Toshio Ishizaki ,  Toru Yamada ,  Shoichi Kitazawa ,  Tomoyuki Iwasaki

发明人： Takehiko Yamakawa ,  Toshio Ishizaki ,  Toru Yamada ,  Shoichi Kitazawa ,  Tomoyuki Iwasaki

IPC分类号： H04B1/26 ,  H03H7/00

CPC分类号： H03H7/175 ,  H01F17/0013 ,  H01F27/362 ,  H01F2017/0026 ,  H01G4/40 ,  H03H7/1758 ,  H03H7/1766 ,  H03H7/1791 ,  H03H7/463 ,  H03H2001/0085

摘要： A multilayer electronic component has a multilayered product laminating a plurality of dielectric sheets as one piece, a plurality of grounded electrodes provided among the dielectric sheets being different inside the multilayered product, and inductor electrodes provided on the dielectric sheet surfaces not having the plurality of grounded electrodes inside the multilayered product, wherein all or part of the inductor electrodes are placed so as not to be sandwiched by the plurality of grounded electrodes.

公开(公告)号：US06965284B2

公开(公告)日：2005-11-15

申请号：US10220037

申请日：2002-02-26

申请人： Tomoya Maekawa ,  Yasuhiro Sugaya ,  Toru Yamada ,  Toshio Ishizaki

发明人： Tomoya Maekawa ,  Yasuhiro Sugaya ,  Toru Yamada ,  Toshio Ishizaki

IPC分类号： H01P1/203 ,  H01P1/213 ,  H01P11/00 ,  H03H7/01

CPC分类号： H01P1/20345 ,  H01P1/2135 ,  H01P11/007

摘要： A dielectric filter includes resonator electrodes, an inter-stage coupling capacitor electrode, and an input/output coupling capacitor electrode on dielectric substrates, respectively. The resonator electrodes are electro-magnetically coupled to each other to form a tri-plate structure, are made of a metallic foil embedded in a resonator dielectric substrate. Another dielectric filter includes an upper shield electrode dielectric substrate, an inter-stage coupling capacitor dielectric substrate, a resonator dielectric substrate, and an input/output coupling capacitor dielectric substrate which are made of a composite dielectric material including a high-dielectric-constant material and a low-dielectric-constant material. The above described arrangement provides the dielectric filter with an improved Q factor of a resonator, a low loss, and a high attenuation.

摘要翻译： 介质滤波器分别包括谐振器电极，级间耦合电容器电极和介电基片上的输入/输出耦合电容器电极。 谐振器电极彼此电磁耦合以形成三板结构，由嵌入在谐振器电介质基板中的金属箔制成。 另一个介质滤波器包括由包括高介电常数材料的复合介电材料制成的上屏蔽电极介质基板，级间耦合电容器介质基板，谐振电介质基板和输入/输出耦合电容器电介质基板 和低介电常数材料。 上述布置为介质滤波器提供了谐振器的改进的Q因子，低损耗和高衰减。

公开(公告)号：US06835968B2

公开(公告)日：2004-12-28

申请号：US10382011

申请日：2003-03-05

申请人： Shoichi Kitazawa ,  Masaharu Tanaka ,  Toshio Ishizaki ,  Toru Yamada

发明人： Shoichi Kitazawa ,  Masaharu Tanaka ,  Toshio Ishizaki ,  Toru Yamada

IPC分类号： H01L2974

CPC分类号： H01P1/15 ,  H01L2924/0002 ,  H01L2924/00

摘要： A high frequency switch, has a transmitting terminal; a receiving terminal; an antenna terminal; a first diode having an anode electrically connected to the transmitting terminal and a cathode electrically connected to the antenna terminal; a second diode having an anode connected through a transmission line of ¼ wavelength to the antenna terminal which is electrically connected to the receiving terminal, and having the side of a cathode grounded; and a control terminal provided to a node between the transmitting terminal and the first anode, wherein the first and second diodes have a tradeoff relationship between ON resistance thereof and capacitance between the anode and the cathode, and the ON resistance of the first diode is lower than the ON resistance of the second diode, and the capacitance of the second diode in the OFF state is smaller than the capacitance of the first diode in the OFF state.

摘要翻译： 高频开关，发射端子，接收端子，天线端子，第一二极管，具有与发射端子电连接的阳极和与天线端子电连接的阴极;第二二极管，具有通过传输线连接的阳极 对天线端子的1/4波长，电连接到接收端子，并且阴极侧接地; 以及提供给发送端子和第一阳极之间的节点的控制端子，其中第一和第二二极管在其导通电阻和阳极和阴极之间的电容之间具有折衷关系，并且第一二极管的导通电阻低于 第二二极管的导通电阻和第二二极管在OFF状态下的电容小于第一二极管处于OFF状态的电容。

公开(公告)号：US06765460B2

公开(公告)日：2004-07-20

申请号：US10315674

申请日：2002-12-10

申请人： Hideaki Nakakubo ,  Toshio Ishizaki ,  Toru Yamada ,  Hiroshi Kagata ,  Tatsuya Inoue ,  Shoichi Kitazawa

发明人： Hideaki Nakakubo ,  Toshio Ishizaki ,  Toru Yamada ,  Hiroshi Kagata ,  Tatsuya Inoue ,  Shoichi Kitazawa

IPC分类号： H01P1203

CPC分类号： H01P7/084 ,  H01P1/203 ,  H01P1/20345 ,  H01P11/008 ,  Y10T29/435 ,  Y10T29/49126 ,  Y10T29/49128 ,  Y10T29/49155 ,  Y10T29/4916

摘要： By using a method for manufacturing a dielectric laminated device, an opening is formed on a first dielectric sheet, a strip line and an input and output line including an input and output electrode are formed by burying electrode materials in said opening, the first dielectric sheet is laminated with the second and third dielectric sheets disposed above and below respectively to form a laminate, a first and second shield electrodes and a ground electrode are formed, an end of the strip line is connected to the ground electrode, the first shield electrode and the second shield electrode are mutually connected through the ground electrode, and the input and output electrode is exposed along the line direction of the strip line. By this constitution of the above dielectric laminated device, the mounting reliability of the dielectric laminated device can be further increased.

摘要翻译： 通过使用电介质层压装置的制造方法，在第一电介质片，带状线和包括输入和输出电极的输入和输出线上形成开口，通过在所述开口中埋入电极材料形成第一电介质片 层叠有分别设置在上下的第二和第三电介质片以形成层叠体，形成第一和第二屏蔽电极和接地电极，带状线的一端连接到接地电极，第一屏蔽电极和 第二屏蔽电极通过接地电极相互连接，并且输入和输出电极沿着带状线的线方向露出。 通过上述电介质层叠装置的结构，能够进一步提高电介质层叠装置的安装可靠性。

公开(公告)号：US06707353B1

公开(公告)日：2004-03-16

申请号：US09868651

申请日：2001-09-14

申请人： Takehiko Yamakawa ,  Toru Yamada ,  Toshio Ishizaki ,  Akira Enokihara ,  Minoru Tachibana ,  Toshiaki Nakamura

发明人： Takehiko Yamakawa ,  Toru Yamada ,  Toshio Ishizaki ,  Akira Enokihara ,  Minoru Tachibana ,  Toshiaki Nakamura

IPC分类号： H01P120

CPC分类号： H01P1/2084

摘要： In order to prevent filter characteristics from being deteriorated due to generation of a spurious pulse is unnecessary resonance at a high level in a passing band at the frequency in a microwave region used in a portable telephone system or the like, at least two types of dielectric resonators having different frequency characteristics in unnecessary harmonic modes except for a main mode near the passing band of a filter are arranged in spaces partitioned by partition walls in a shielding unit constituted by a metal case and a lid, so that a dielectric filter which can obtain preferable spurious suppressing characteristics.

摘要翻译： 为了防止由于杂散脉冲的产生而导致的滤波器特性劣化，在便携式电话系统等中使用的微波区域中的通过频带中的高电平的不必要的谐振，至少两种类型的电介质 在除了滤波器的通带附近的主模式以外的不必要的谐波模式中具有不同频率特性的谐振器被布置在由金属壳体和盖子构成的屏蔽单元中由隔壁分隔的空间中，使得能够获得 优选的杂散抑制特性。

公开(公告)号：US06456172B1

公开(公告)日：2002-09-24

申请号：US09692546

申请日：2000-10-20

申请人： Toshio Ishizaki ,  Toru Yamada ,  Hiroshi Kagata ,  Makoto Sakakura

发明人： Toshio Ishizaki ,  Toru Yamada ,  Hiroshi Kagata ,  Makoto Sakakura

IPC分类号： H03H972

CPC分类号： H01P1/20345 ,  H01L23/66 ,  H01L2223/6627 ,  H01L2224/16225 ,  H01L2224/16235 ,  H01L2924/00014 ,  H01L2924/0102 ,  H01L2924/01057 ,  H01L2924/01079 ,  H01L2924/09701 ,  H01L2924/1305 ,  H01L2924/15153 ,  H01L2924/15165 ,  H01L2924/1517 ,  H01L2924/16152 ,  H01L2924/16195 ,  H01L2924/19032 ,  H01L2924/19105 ,  H01L2924/3011 ,  H01L2924/3025 ,  H01L2924/00 ,  H01L2224/0401

摘要： A multilayered ceramic RF device having at least one radio frequency filter includes a low temperature-cofired multilayered ceramic body having a plurality of ceramic layers laminated one upon another and fired together. The low temperature-cofired multilayered ceramic body also has a first electrode pattern formed therein and a second electrode pattern formed thereon. The first and second electrode patterns are electrically connected to one another through a via hole. A bare semiconductor chip is mounted on the low temperature-cofired multilayered ceramic body with a face down bonding, and the bare semiconductor chip is coated with a sealing resin. The at least one radio frequency filter is a multilayered filter formed in the low temperature-cofired multilayered ceramic body, and the multilayered filter includes a part of the first and second electrode patterns.

摘要翻译： 具有至少一个射频滤波器的多层陶瓷RF器件包括具有多个层叠在一起的多个陶瓷层的低温共烧多层陶瓷体。 低温共烧多层陶瓷体还具有形成在其中的第一电极图案和形成在其上的第二电极图案。 第一和第二电极图案通过通孔彼此电连接。 裸机半导体芯片安装在低温共烧的多层陶瓷体上，面朝下接合，裸半导体芯片涂有密封树脂。 所述至少一个射频滤波器是形成在所述低温共烧多层陶瓷体中的多层滤光器，并且所述多层滤光器包括所述第一和第二电极图案的一部分。