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1. 发明申请

US20070062719A1 Electrically conducting-inorganic substance-containing silicon carbide-based fine particles, electromagnetic wave absorbing material and electromagnetic wave absorber 有权
标题翻译：含导电无机物质的碳化硅系微粒，电磁波吸收材料和电磁波吸收体
公开(公告)号：US20070062719A1
公开(公告)日：2007-03-22
申请号：US11524104
申请日：2006-09-20
申请人： Koji Shibata , Takeshi Kita , Koji Shiba , Takashi Kino , Hideo Sano , Yoichi Okubo , Shigeru Yao
发明人： Koji Shibata , Takeshi Kita , Koji Shiba , Takashi Kino , Hideo Sano , Yoichi Okubo , Shigeru Yao
IPC分类号： B05D5/12 , H01B3/44
CPC分类号： C04B35/565 , C04B2235/483 , Y10T428/24942 , Y10T428/24992 , Y10T428/259 , Y10T428/2991 , Y10T428/2993
摘要： Silicon carbide-based fine particles containing an electrically conducting inorganic substance and a electromagnetic wave absorbing material, which are fine particles comprising a particle inner portion of a silicon carbide-based material and a surface layer formed of an electrically conducting inorganic substance mainly comprising carbon, wherein a gradient layer with the compositional ratio of the electrically conducting inorganic substance gradiently increasing toward the particle surface is present and the thickness of the electrically conducting inorganic substance gradient layer is from 1 to 500 nm. The electromagnetic wave absorbing material of the present invention can selectively absorb a electromagnetic wave of 1 to 300 GHz in a wide band.
摘要翻译：含有导电性无机物质和电磁波吸收材料的碳化硅系微粒是由碳化硅系材料的粒子内部构成的微细粒子和由主要由碳组成的导电性无机物形成的表面层，其中存在导电无机物质与颗粒表面梯度增加的组成比的梯度层，并且导电无机物质梯度层的厚度为1至500nm。本发明的电磁波吸收材料可以选择性地吸收宽带1〜300GHz的电磁波。

2. 发明授权

US07846546B2 Electrically conducting-inorganic substance-containing silicon carbide-based fine particles, electromagnetic wave absorbing material and electromagnetic wave absorber 有权
标题翻译：含导电无机物质的碳化硅系微粒，电磁波吸收材料和电磁波吸收体
公开(公告)号：US07846546B2
公开(公告)日：2010-12-07
申请号：US11524104
申请日：2006-09-20
申请人： Koji Shibata , Takeshi Kita , Koji Shiba , Takashi Kino , Hideo Sano , Yoichi Okubo , Shigeru Yao
发明人： Koji Shibata , Takeshi Kita , Koji Shiba , Takashi Kino , Hideo Sano , Yoichi Okubo , Shigeru Yao
IPC分类号： B32B5/16
CPC分类号： C04B35/565 , C04B2235/483 , Y10T428/24942 , Y10T428/24992 , Y10T428/259 , Y10T428/2991 , Y10T428/2993
摘要： Silicon carbide-based fine particles containing an electrically conducting inorganic substance and a electromagnetic wave absorbing material, which are fine particles comprising a particle inner portion of a silicon carbide-based material and a surface layer formed of an electrically conducting inorganic substance mainly comprising carbon, wherein a gradient layer with the compositional ratio of the electrically conducting inorganic substance gradiently increasing toward the particle surface is present and the thickness of the electrically conducting inorganic substance gradient layer is from 1 to 500 nm. The electromagnetic wave absorbing material of the present invention can selectively absorb a electromagnetic wave of 1 to 300 GHz in a wide band.
摘要翻译：含有导电性无机物质和电磁波吸收材料的碳化硅系微粒是由碳化硅系材料的粒子内部构成的微细粒子和由主要由碳组成的导电性无机物形成的表面层，其中存在导电无机物质与颗粒表面梯度增加的组成比的梯度层，并且导电无机物质梯度层的厚度为1至500nm。本发明的电磁波吸收材料可以选择性地吸收宽带1〜300GHz的电磁波。

3. 发明授权

US07626455B2 Distortion compensation apparatus 有权
标题翻译：失真补偿装置
公开(公告)号：US07626455B2
公开(公告)日：2009-12-01
申请号：US12060502
申请日：2008-04-01
申请人： Taizo Ito , Yoichi Okubo , Junya Dosaka , Toshio Nojima
发明人： Taizo Ito , Yoichi Okubo , Junya Dosaka , Toshio Nojima
IPC分类号： H03F1/26
CPC分类号： H03F1/3252
摘要： A distortion compensation apparatus includes distortion generating means for generating distortions to compensate for a distortion generated in an amplifier 2. The distortion generating means includes a nonlinear circuit 13 having an input/output expansion characteristic as a circuit which generates a distortion of the lowest odd order as a compensation target and also includes a nonlinear circuit 18 having an input/output saturation characteristic as a circuit which generates a distortion of another odd order as a compensation target.
摘要翻译：失真补偿装置包括：失真产生装置，用于产生失真以补偿放大器2中产生的失真。失真发生装置包括具有输入/输出扩展特性的非线性电路13作为产生最低奇数阶失真的电路作为补偿对象，并且还包括具有输入/输出饱和特性的非线性电路18作为产生作为补偿目标的另一奇数阶失真的电路。

4. 发明授权

US06959174B2 Amplifying device 有权
标题翻译：放大装置
公开(公告)号：US06959174B2
公开(公告)日：2005-10-25
申请号：US10229017
申请日：2002-08-28
申请人： Naoki Hongo , Yoichi Okubo , Masaki Suto , Tetsuhiko Miyatani
发明人： Naoki Hongo , Yoichi Okubo , Masaki Suto , Tetsuhiko Miyatani
IPC分类号： H03F1/32 , H04B1/04 , H04B1/62 , H04L27/00 , H04L27/26
CPC分类号： H03F1/3247 , H03F1/3252 , H04B1/0475 , H04B1/62
摘要： To provide an amplifying device which is reduced in size, weight and cost and which can improve the distortion compensation performance. In the amplifying device, input signals are each subjected to digital orthogonal modulation using an IF and further to offset rotation processing in digital orthogonal modulators, then bifurcated into a main signal system and a control system, and detection of a power value is performed at an IF band in a power detecting section of the control system. Therefore, offset rotation processing of the input signals in the power detection is not required, so that a structure for matching phases of a multi-carrier signal and a power value signal is not required, resulting in improving the distortion compensation performance without using an analog delay line.
摘要翻译：提供一种减小尺寸，重量和成本并且可以改善失真补偿性能的放大装置。在放大装置中，输入信号各自使用IF进行数字正交调制，并且进一步抵消数字正交调制器中的旋转处理，然后分支为主信号系统和控制系统，并且功率值的检测在中频带在控制系统的功率检测部分。因此，不需要功率检测中的输入信号的偏移旋转处理，因此不需要用于匹配多载波信号和功率值信号的相位的结构，从而提高失真补偿性能而不使用模拟延迟线。

5. 发明授权

US06773634B2 Conductive polymer composition and PTC element 失效
标题翻译：导电聚合物组合物和PTC元件
公开(公告)号：US06773634B2
公开(公告)日：2004-08-10
申请号：US10169252
申请日：2002-06-28
申请人： Yasumasa Iwamoto , Tadatoshi Aridomi , Yoichi Okubo
发明人： Yasumasa Iwamoto , Tadatoshi Aridomi , Yoichi Okubo
IPC分类号： H01B124
CPC分类号： H01C7/027 , C08K3/04 , H01B1/20 , H01B1/24 , C08L9/00
摘要： A conductive polymer composition comprising 100 parts by weight of a crystalline polymer (A) and 5 to 150 parts by weight of a conductive powder (B) dispersed in the crystalline polymer (A) is disclosed. The crystalline polymer (A) shows crystal transition, thereby the conductive polymer composition exhibits PTC characteristics.
摘要翻译：公开了包含100重量份结晶聚合物（A）和5至150重量份分散在结晶聚合物（A）中的导电粉末（B）的导电聚合物组合物。结晶聚合物（A）显示出晶体转变，因此导电聚合物组合物显示出PTC特性。

6. 发明授权

US07847630B2 Amplifier 有权
标题翻译：放大器
公开(公告)号：US07847630B2
公开(公告)日：2010-12-07
申请号：US11255874
申请日：2005-10-24
申请人： Yoichi Okubo , Masaki Suto , Yasuhiro Takeda , Masaru Adachi
发明人： Yoichi Okubo , Masaki Suto , Yasuhiro Takeda , Masaru Adachi
IPC分类号： H03F3/28
CPC分类号： H03F1/0288
摘要： There is provided an amplifier for combining outputs of a plurality of amplifying circuits to generate an amplifier output. The amplifier includes a first amplifying circuit for operating a first amplifying device in class-AB, wherein the first amplifying circuit is one among the plurality of the amplifying circuits; a second amplifying circuit for operating a second amplifying device in class-B or class-C, wherein the second amplifying circuit is one among the plurality of the amplifying circuits; and a summing node at which an output of the first amplifying circuit is combined with an output of the second amplifying circuit via a first impedance transformer containing a transmission line of an electrical length other than λ/4. The second amplifying device is connected to the summing node via an output matching circuit and a second impedance transformer containing a transmission line.
摘要翻译：提供了用于组合多个放大电路的输出以产生放大器输出的放大器。放大器包括用于操作AB类中的第一放大装置的第一放大电路，其中第一放大电路是多个放大电路之一; 用于在B类或C类中操作第二放大装置的第二放大电路，其中第二放大电路是多个放大电路之一; 以及求和节点，第一放大电路的输出通过包含除λ/ 4以外的电长度的传输线的第一阻抗变换器与第二放大电路的输出相结合。第二放大装置经由输出匹配电路和包含传输线的第二阻抗变换器连接到求和节点。

7. 发明申请

US20100171553A1 POWER CIRCUIT 有权
标题翻译：电源电路
公开(公告)号：US20100171553A1
公开(公告)日：2010-07-08
申请号：US12644833
申请日：2009-12-22
申请人： Yoichi Okubo , Manabu Nakamura , Junya Dosaka , Yasuhiro Takeda , Taizo Ito , Naoki Hongo , Taizo Yamawaki , Takashi Kawamoto , Akira Maeki
发明人： Yoichi Okubo , Manabu Nakamura , Junya Dosaka , Yasuhiro Takeda , Taizo Ito , Naoki Hongo , Taizo Yamawaki , Takashi Kawamoto , Akira Maeki
IPC分类号： H03G1/00
CPC分类号： H03F1/0227 , H03F3/19 , H03F2200/451 , H03F2200/462
摘要： A power circuit used for an amplifier, which includes an amplifier provided with a linear amplifier serving as a voltage source, a DC/DC converter serving as a current source, a hysteresis comparator controlling the DC/DC converter, and a current detector detecting output current from the linear amplifier to output the detected output current to the hysteresis comparator; and a switching restricting means for restricting a switching interval in the DC/DC converter such that the switching interval is not equal to or less than a constant time or is not shorter than the constant time.
摘要翻译：用于放大器的电源电路，其包括放大器，该放大器设置有用作电压源的线性放大器，用作电流源的DC / DC转换器，控制DC / DC转换器的滞环比较器以及电流检测器检测输出电流从线性放大器输出检测输出电流到滞后比较器; 以及切换限制装置，用于限制DC / DC转换器中的切换间隔，使得切换间隔不等于或小于恒定时间或不短于恒定时间。

8. 发明申请

US20060097783A1 Amplifier 有权
公开(公告)号：US20060097783A1
公开(公告)日：2006-05-11
申请号：US11255874
申请日：2005-10-24
申请人： Yoichi Okubo , Masaki Suto , Yasuhiro Takeda , Masaru Adachi
发明人： Yoichi Okubo , Masaki Suto , Yasuhiro Takeda , Masaru Adachi
IPC分类号： H03F3/68
CPC分类号： H03F1/0288
摘要： There is provided an amplifier for combining outputs of a plurality of amplifying circuits to generate an amplifier output. The amplifier includes a first amplifying circuit for operating a first amplifying device in class-AB, wherein the first amplifying circuit is one among the plurality of the amplifying circuits; a second amplifying circuit for operating a second amplifying device in class-B or class-C, wherein the second amplifying circuit is one among the plurality of the amplifying circuits; and a summing node at which an output of the first amplifying circuit is combined with an output of the second amplifying circuit via a first impedance transformer containing a transmission line of an electrical length other than λ/4. The second amplifying device is connected to the summing node via an output matching circuit and a second impedance transformer containing a transmission line.

9. 发明授权

US06931239B2 Peak limiter and multi-carrier amplification apparatus 有权
标题翻译：峰值限幅器和多载波放大装置
公开(公告)号：US06931239B2
公开(公告)日：2005-08-16
申请号：US10205563
申请日：2002-07-26
申请人： Naoki Hongo , Yoichi Okubo , Masaki Suto , Masato Horaguchi , Toshio Takada , Tetsuhiko Miyatani
发明人： Naoki Hongo , Yoichi Okubo , Masaki Suto , Masato Horaguchi , Toshio Takada , Tetsuhiko Miyatani
IPC分类号： H03G11/04 , H04L27/26 , H04B1/02 , H04B1/04
CPC分类号： H03G11/04 , H04L27/2623
摘要： A peak limiter for use in a system for amplifying a multi-carrier signal receives a baseband signal of each carrier of the multi-carrier signal. The multi-carrier signal is computationally estimated to have carriers combined in an RF band, and obtains power information of the multi-carrier signal to limit an amplitude of the baseband signal based on the power information of the estimated multi-carrier signal to thereby provide peak-limited baseband signals. Thus, the distortion generated by performing the unnecessary peak limitation can be effectively prevented to thereby improve the reliability of the entire system.
摘要翻译：用于放大多载波信号的系统中的峰值限制器接收多载波信号的每个载波的基带信号。计算地估计多载波信号使载波组合在RF频带中，并且基于估计的多载波信号的功率信息获得多载波信号的功率信息以限制基带信号的幅度，从而提供峰值限制基带信号。因此，可以有效地防止通过执行不必要的峰值限制而产生的失真，从而提高整个系统的可靠性。

10. 发明授权

US06741128B2 Distortion canceling circuit 失效
标题翻译：失真消除电路
公开(公告)号：US06741128B2
公开(公告)日：2004-05-25
申请号：US10131131
申请日：2002-04-25
申请人： Yoichi Okubo , Kiyoshi Funada , Masaki Suto , Masato Horaguchi , Toshio Takada , Naoki Hongo
发明人： Yoichi Okubo , Kiyoshi Funada , Masaki Suto , Masato Horaguchi , Toshio Takada , Naoki Hongo
IPC分类号： H03F126
CPC分类号： H03F1/3247 , H03F1/3205 , H03F1/3282 , H03F1/3288 , H03F2200/102 , H03F2201/3206 , H03F2201/3233
摘要： There is provided a distortion canceling circuit for reducing an unbalance between a higher and a lower 3rd order distortion at frequencies of (2·f2−f1) and (2·f1−f2), respectively, the distortions being generated by an amplifier which amplifies an input signal having at least two frequency components, i.e., f1 and f2. Phase modulation control means supply a control signal, which has a difference frequency of (f2−f1), to phase modulation means, the control signal being generated based on the amplified input signal outputted from the amplifier. The phase modulation means performs phase modulation on the amplified input signal based on the supplied control signal to thereby generate a higher and a lower side-band signal having frequencies of (2·f2−f1) and (2·f1−f2), respectively, each of which has an identical amplitude and a phase difference of 180° with respect to each other. The distortion canceling circuit reduces the unbalance by using the side-band signals.
摘要翻译：提供了一种用于减小在（2.f2-f1）和（2.f1-f2）频率处的较高和较低三阶失真之间的不平衡的失真消除电路，失真是由放大器具有至少两个频率分量的输入信号，即f1和f2。相位调制控制装置将具有差分频率（f2-f1）的控制信号提供给相位调制装置，该控制信号是根据从放大器输出的放大输入信号产生的。相位调制装置基于所提供的控制信号对放大的输入信号执行相位调制，从而分别产生频率为（2.f2-f1）和（2.f1-f2）的较高和较低的边带信号，其中的每一个具有相同的振幅和相对于彼此为180°的相位差。失真消除电路通过使用边带信号来减少不平衡。

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