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1. 发明授权

US07683712B2 Wireless frequency power amplifier, semiconductor device, and wireless frequency power amplification method 失效
标题翻译：无线频率功率放大器，半导体器件和无线频率功率放大法
公开(公告)号：US07683712B2
公开(公告)日：2010-03-23
申请号：US12052857
申请日：2008-03-21
申请人： Hidefumi Suzaki , Junji Ito , Fumiya Kamimura , Shigeki Nakamura
发明人： Hidefumi Suzaki , Junji Ito , Fumiya Kamimura , Shigeki Nakamura
IPC分类号： H03G9/00
CPC分类号： H03F3/19 , H03F1/30 , H03G3/3042
摘要： A differential amplifier circuit is connected to the input node and the output node of the final amplification stage through detection circuits. The signal level difference output from the differential amplifier circuit does not change even if the input power varies. Because a change in the power gain at the output node does not travel back to the input node when the load impedance of the wireless frequency power amplifier varies, it is possible to detect only the change in the load impedance. Damage to the final stage can be prevented by controlling the operating current of the final stage and the gain of the drive stage according to the detected load variation. Nonlinear distortion in the wireless frequency power amplifier output can also be reduced by detecting and canceling the change in the gain of the drive stage by changing the gain of the adjustment stage.
摘要翻译：差分放大器电路通过检测电路连接到最终放大级的输入节点和输出节点。即使输入功率变化，差分放大电路输出的信号电平差也不变。因为当无线频率功率放大器的负载阻抗变化时，输出节点处的功率增益的改变不会返回到输入节点，所以可以仅检测负载阻抗的变化。可以通过根据检测到的负载变化来控制最后级的工作电流和驱动级的增益来防止对最后级的损坏。通过改变调节级的增益，可以通过检测和消除驱动级增益的变化来减小无线频率功率放大器输出中的非线性失真。

2. 发明申请

US20080231368A1 WIRELESS FREQUENCY POWER AMPLIFIER, SEMICONDUCTOR DEVICE, AND WIRELESS FREQUENCY POWER AMPLIFICATION METHOD 失效
标题翻译：无线频率功率放大器，半导体器件和无线频率功率放大方法
公开(公告)号：US20080231368A1
公开(公告)日：2008-09-25
申请号：US12052857
申请日：2008-03-21
申请人： Hidefumi Suzaki , Junji Ito , Fumiya Kamimura , Shigeki Nakamura
发明人： Hidefumi Suzaki , Junji Ito , Fumiya Kamimura , Shigeki Nakamura
IPC分类号： H03F3/16 , H03G3/00
CPC分类号： H03F3/19 , H03F1/30 , H03G3/3042
摘要： A differential amplifier circuit is connected to the input node and the output node of the final amplification stage through detection circuits. The signal level difference output from the differential amplifier circuit does not change even if the input power varies. Because a change in the power gain at the output node does not travel back to the input node when the load impedance of the wireless frequency power amplifier varies, it is possible to detect only the change in the load impedance. Damage to the final stage can be prevented by controlling the operating current of the final stage and the gain of the drive stage according to the detected load variation. Nonlinear distortion in the wireless frequency power amplifier output can also be reduced by detecting and canceling the change in the gain of the drive stage by changing the gain of the adjustment stage.
摘要翻译：差分放大器电路通过检测电路连接到最终放大级的输入节点和输出节点。即使输入功率变化，差分放大电路输出的信号电平差也不变。因为当无线频率功率放大器的负载阻抗变化时，输出节点处的功率增益的改变不会返回到输入节点，所以可以仅检测负载阻抗的变化。可以通过根据检测到的负载变化来控制最后级的工作电流和驱动级的增益来防止对最后级的损坏。通过改变调节级的增益，可以通过检测和消除驱动级增益的变化来减小无线频率功率放大器输出中的非线性失真。

3. 发明授权

US07899420B2 Wireless transmission device in which transmission output is controlled in feedback control 有权
标题翻译：在反馈控制中控制传输输出的无线传输装置
公开(公告)号：US07899420B2
公开(公告)日：2011-03-01
申请号：US12014316
申请日：2008-01-15
申请人： Shigeki Nakamura , Fumiya Kamimura , Junji Ito , Hidefumi Suzaki
发明人： Shigeki Nakamura , Fumiya Kamimura , Junji Ito , Hidefumi Suzaki
IPC分类号： H04B1/04
CPC分类号： H03F3/45085 , H03F3/24 , H03F2200/408 , H03F2200/451 , H03F2203/45612 , H04B2001/0416
摘要： A wireless transmission device includes a RF power amplification section for amplifying a transmit RF signal and outputting the amplified signal to a transmission antenna, a detector section, and a control section. The RF power amplification section includes a plurality of stages of amplification, the transmit RF signal is input to an input of a first one of the plurality of stages of amplification, and an output of a last one of the plurality of stages of amplification is output to the transmission antenna. The detector section includes a plurality of detectors provided so as to correspond to the plurality of stages of amplification, each for detecting an input level of a corresponding one of the stages of amplification, and a synthesizer for synthesizing together detection outputs from the plurality of detectors. The control section controls, in a feedback control, an output level of the RF power amplification section based on an output level of the synthesizer.
摘要翻译：无线传输装置包括：RF功率放大部分，用于放大发射RF信号并将放大的信号输出到发射天线，检测器部分和控制部分。 RF功率放大部分包括多级放大，发射RF信号被输入到多级放大级中的第一级的输入，并输出多级放大的最后一级的输出到发射天线。检测器部分包括多个检测器，它们被设置为对应于多个放大级，每个检测器用于检测放大级中对应的一级的输入电平;以及合成器，用于将来自多个检测器的检测输出。控制部分在反馈控制中基于合成器的输出电平来控制RF功率放大部分的输出电平。

4. 发明申请

US20090011727A1 WIRELESS TRANSMITTER 有权
标题翻译：无线发射机
公开(公告)号：US20090011727A1
公开(公告)日：2009-01-08
申请号：US12014316
申请日：2008-01-15
申请人： Shigeki Nakamura , Fumiya Kamimura , Junji Ito , Hidefumi Suzaki
发明人： Shigeki Nakamura , Fumiya Kamimura , Junji Ito , Hidefumi Suzaki
IPC分类号： H04B1/04
CPC分类号： H03F3/45085 , H03F3/24 , H03F2200/408 , H03F2200/451 , H03F2203/45612 , H04B2001/0416
摘要： A wireless transmission device includes a RF power amplification section for amplifying a transmit RF signal and outputting the amplified signal to a transmission antenna, a detector section, and a control section. The RF power amplification section includes a plurality of stages of amplification, the transmit RF signal is input to an input of a first one of the plurality of stages of amplification, and an output of a last one of the plurality of stages of amplification is output to the transmission antenna. The detector section includes a plurality of detectors provided so as to correspond to the plurality of stages of amplification, each for detecting an input level of a corresponding one of the stages of amplification, and a synthesizer for synthesizing together detection outputs from the plurality of detectors. The control section controls, in a feedback control, an output level of the RF power amplification section based on an output level of the synthesizer.
摘要翻译：无线传输装置包括：RF功率放大部分，用于放大发射RF信号并将放大的信号输出到发射天线，检测器部分和控制部分。 RF功率放大部分包括多级放大，发射RF信号被输入到多级放大级中的第一级的输入，并输出多级放大的最后一级的输出到发射天线。检测器部分包括多个检测器，它们被设置为对应于多个放大级，每个检测器用于检测放大级中对应的一级的输入电平;以及合成器，用于将来自多个检测器的检测输出。控制部分在反馈控制中基于合成器的输出电平来控制RF功率放大部分的输出电平。

5. 发明授权

US07576612B2 Power amplifier 有权
标题翻译：功率放大器
公开(公告)号：US07576612B2
公开(公告)日：2009-08-18
申请号：US11958966
申请日：2007-12-18
申请人： Shigeki Nakamura , Junji Ito
发明人： Shigeki Nakamura , Junji Ito
IPC分类号： H03F3/04
CPC分类号： H03F3/45183 , H03F1/30 , H03F3/195 , H03F3/3022 , H03F2200/18 , H03F2200/451 , H03F2200/492 , H03F2200/513
摘要： The present invention provides a power amplifier that includes the following: an RF operation transistor 3 having a base to which an RF signals is inputted, an emitter connected to the ground, and a collector connected to a power supply and a terminal for outputting an RF signal; a current reference transistor 12 having a collector connected to a reference current source 11, an emitter connected to the ground, and a base connected to the base of the RF operation transistor, an operational amplifier 22 formed of CMOS having one input connected to the collector of the current reference transistor and the other input connected to the base of the RF operation transistor; and a voltage-to-current conversion transistor 22 for converting the output of the operational amplifier 22 into a current to be supplied to the base of the RF operation transistor. The power amplifier has low power consumption and an efficient use of chip area, and a current variation due to the relative variation in hFE can be prevented, so as to be driven with a low power supply voltage.
摘要翻译：本发明提供一种功率放大器，其特征在于，包括：具有输入RF信号的基极的RF工作晶体管3，与地相连的发射极，与电源连接的集电极，以及输出RF 信号; 具有连接到参考电流源11的集电极的电流参考晶体管12，连接到地的发射极和连接到RF操作晶体管的基极的基极，由CMOS形成的运算放大器22，其具有连接到集电极的一个输入端并且另一个输入端连接到RF操作晶体管的基极; 以及用于将运算放大器22的输出转换为要提供给RF操作晶体管的基极的电流的电压 - 电流转换晶体管22。功率放大器具有低功耗和芯片面积的有效利用，并且可以防止由于hFE的相对变化引起的电流变化，从而以低电源电压驱动。

6. 发明申请

US20060105708A1 Communication system, communication receiving device and communication terminal in the system 审中-公开
标题翻译：系统中的通信系统，通信接收设备和通信终端
公开(公告)号：US20060105708A1
公开(公告)日：2006-05-18
申请号：US11293214
申请日：2005-12-05
申请人： Toshihide Maeda , Nobuo Hamano , Shigeki Nakamura , Tomiharu Yoshida , Masataka Owada , Masahiko Ikeda , Takashi Yabutani , Masahiro Ito
发明人： Toshihide Maeda , Nobuo Hamano , Shigeki Nakamura , Tomiharu Yoshida , Masataka Owada , Masahiko Ikeda , Takashi Yabutani , Masahiro Ito
IPC分类号： H04B7/185
CPC分类号： H04B7/18558 , B64G1/1007 , B64G1/1085 , B64G1/242 , H04B7/195
摘要： An information providing method and apparatus in which a radio wave signal is transmitted from plural artificial satellites and received at plural receiving equipment located within a pre-defined service area, and receiving within a pre-defined range of operational elevation angle by a receiving antenna. The plural artificial satellites are viewable in turn within a pre-defined range of operational elevation angle at an arbitrary location within the pre-defined service area, and an orbit is arranged so that at least one artificial satellite is viewable. Each orbit of the plural artificial satellites is arranged on an individual orbital plane according to a designated service hour. The individual orbit is located in a range where an orbital inclination angle is 63.4 degrees or closer to Japan, and a right ascension of a north-bound node of the individual artificial satellite is separated approximately at regular intervals.
摘要翻译：一种信息提供方法和装置，其中从多个人造卫星发送无线电波信号并在位于预定义服务区域内的多个接收设备处接收无线电波信号，并且在接收天线的预定义的操作仰角范围内接收。多个人造卫星可以在预定义的服务区域内的任意位置的操作仰角的预定范围内依次可视，并且布置轨道使得至少一个人造卫星是可见的。多个人造卫星的每个轨道根据指定的服务时间被布置在个体轨道平面上。单个轨道位于轨道倾斜角度为63.4度或更靠近日本的范围内，并且每个人造卫星的向北节点的右上升大致以规则的间隔分开。

7. 发明授权

US06328264B1 Artificial satellite with an orbit having a long staying time in a zenith direction, an orbit control method and a communication system therewith 失效
标题翻译：具有在天顶方向上具有长停留时间的轨道的人造卫星，轨道控制方法及其通信系统
公开(公告)号：US06328264B1
公开(公告)日：2001-12-11
申请号：US09672062
申请日：2000-09-29
申请人： Toshihide Maeda , Nobuo Hamano , Shigeki Nakamura , Tomiharu Yoshida , Masataka Owada , Masahiko Ikeda , Takashi Yabutani , Masahiro Ito
发明人： Toshihide Maeda , Nobuo Hamano , Shigeki Nakamura , Tomiharu Yoshida , Masataka Owada , Masahiko Ikeda , Takashi Yabutani , Masahiro Ito
IPC分类号： B64G110
CPC分类号： B64G1/1085 , B64G1/1007 , B64G1/242 , H04B7/18539
摘要： A communication system, wherein plural elliptical orbits in which an apogee is located on a specified service area are so defined that an individual right ascension of north-bound node may be established with a designated angle. A satellite is made to travel on an individual elliptical orbit and a group of satellites to be arranged on said elliptical orbits are used so that at least one of artificial satellites having a communication system may be always viewable within a pre-defined range of ascending vertical angle in a zenith direction from the service area.
摘要翻译：一种通信系统，其中远地点位于指定服务区上的多个椭圆轨道被定义为可以以指定的角度建立北方节点的个体右上升。使用卫星在单独的椭圆轨道上行进，并且使用要布置在所述椭圆轨道上的一组卫星，使得具有通信系统的人造卫星中的至少一个可以总是在上行垂直的预定义范围内可见从服务区域的天顶方向的角度。

8. 发明授权

US5073904A Digital signal processing type demodulation method and demodulation circuit 失效
标题翻译：数字信号处理型解调方式和解调电路
公开(公告)号：US5073904A
公开(公告)日：1991-12-17
申请号：US354918
申请日：1989-05-22
申请人： Shigeki Nakamura , Yasufumi Takahashi
发明人： Shigeki Nakamura , Yasufumi Takahashi
IPC分类号： H04L27/00 , H03D1/00 , H04L7/00 , H04L7/02 , H04L27/22 , H04L27/38
CPC分类号： H04L7/0029 , H03D1/00
摘要： Disclosed is a digital demodulation technique in which a reception modulated-wave signal is converted into a digital signal in synchronism with a sampling frequency, whereafter carrier regeneration/detection is carried out upon the digital signal to thereby output a detection signal. Then, the detection signal is subject to interpolation and resampling on the basis of a clock frequency established asynchronously with and independently of the sampling frequency, so that a timing component is extracted from the detection signal in synchronism with the clock frequency to thereby output a reception data. In the digital demodulation technique, since the sampling frequency and the clock frequency are established asynchronously with and independently of each other, jitter or the like produced in clock regeneration do not affect the carrier regeneration/detection. Consequently, noiseless reception data with little jitters can be regenerated.
摘要翻译：公开了一种数字解调技术，其中接收调制波信号与采样频率同步地转换为数字信号，之后对数字信号执行载波再生/检测，从而输出检测信号。然后，基于与采样频率异步建立的时钟频率对检测信号进行内插和重采样，从而与时钟频率同步地从检测信号中提取定时分量，从而输出接收数据。在数字解调技术中，由于采样频率和时钟频率彼此异步地建立并且彼此独立地建立，所以在时钟再生中产生的抖动等不影响载波再生/检测。因此，可以再生具有小抖动的无噪声接收数据。

9. 发明授权

US4856027A Carrier recovery phase-locked loop 失效
标题翻译：载波恢复锁相环
公开(公告)号：US4856027A
公开(公告)日：1989-08-08
申请号：US173652
申请日：1988-03-24
申请人： Shigeki Nakamura , Yasufumi Takahashi
发明人： Shigeki Nakamura , Yasufumi Takahashi
IPC分类号： H04L27/22 , H04L27/00 , H04L27/227
CPC分类号： H04L27/2273 , H04L2027/0057 , H04L2027/0095
摘要： A carrier recovery phase-locked loop for recovering a carrier from a digitized quadrature phase shift keying modulated wave arriving on time division basis comprises a PLL circuit, first unit, responsive to the received signal, for preparing a phase comparator's characteristic adapted for a binary phase shift keying modulated wave, second unit, also responsive to the received signal, for preparing a phase comparator's characteristic adapted for the quadrature phase shift keying modulated wave and switching unit for selectively supplying output signals from the first and second units to the PLL circuit. During reception of a preamble, the carrier is recovered using the binary phase comparator's characteristic through the PLL circuit.
摘要翻译：用于从按时分方式到达的数字化正交相移键控调制波恢复载波的载波恢复锁相环包括PLL电路，响应于接收信号的第一单元，用于准备适于二进制相位的相位比较器的特性移位键控调制波，第二单元，也响应于接收信号，用于准备适用于正交相移键控调制波的相位比较器特性和用于选择性地将来自第一和第二单元的输出信号提供给PLL电路的切换单元。在接收前置码时，通过PLL电路使用二进制相位比较器的特性恢复载波。

10. 发明授权

US4105449A Extruded electrophotographic recording material 失效
标题翻译：超声电子记录材料
公开(公告)号：US4105449A
公开(公告)日：1978-08-08
申请号：US808776
申请日：1977-06-21
申请人： Tadayoshi Tanei , Shigeki Nakamura , Masahiro Hotta
发明人： Tadayoshi Tanei , Shigeki Nakamura , Masahiro Hotta
IPC分类号： G03G5/05 , G03G5/087
CPC分类号： G03G5/0507 , G03G5/0514 , G03G5/0517 , G03G5/0521 , G03G5/0535 , G03G5/0578
摘要： An electrophotographic recording material formed by extrusion, which comprises (A) 100 parts by weight of a blended composition of olefins having high and low melt indices in a specified weight ratio, (B) 0.025 to 40 parts by weight of a specified light-sensitizing organic compound, (C) 200 to 600 parts by weight of particulate photoconductive zinc oxide, (D) 0.06 to 0.4 part by weight, per 100 parts by weight of the total of components (A), (B) and (C), of a specified metal (e.g., Mg, Ca, Zn, Sn) salt of a C.sub.12-20 saturated or unsaturated fatty acid, and (E) 1 to 20 parts by weight of a silicone polymer; the components (B), (C), (D) and (E) being uniformly dispersed in component (A), and the light-sensitizing organic compound (B) being adsorbed to the surface of the zinc oxide (C).

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