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1. 发明授权

US5790555A Signal multiplexer and multiplexing method 失效
标题翻译：信号多路复用和复用方法
公开(公告)号：US5790555A
公开(公告)日：1998-08-04
申请号：US663278
申请日：1996-06-07
申请人： Shoichi Narahashi , Ken Kumagai , Toshio Nojima , Yoshiaki Tarusawa
发明人： Shoichi Narahashi , Ken Kumagai , Toshio Nojima , Yoshiaki Tarusawa
IPC分类号： H03G3/30 , H04B1/04 , H04J1/00 , H04J1/06 , H04J1/16 , H04J1/20 , H04L5/06 , H04L27/10 , H04L27/12 , H04L27/26
CPC分类号： H04J1/06 , H03G3/30 , H03G3/3042 , H04J1/065 , H04J1/16 , H04J1/20 , H04L27/10 , H04L27/12 , H04L5/06 , H04L27/2621
摘要： The frequencies of input modulated signals fed via ports 11.sub.1 to 11.sub.n are converted by frequency converting parts 12.sub.1 to 12.sub.n to different bands, and the converted outputs are applied to power combining part 24 decides if 16 via variable attenuators 21.sub.1 to 21.sub.n, respectively, and provided therefrom as a multiplexed output a portion of which is branched. The envelope power level L is detected by level detecting part 23. Control with the detected level L exceeds a level L.sub.s that is k times the average power of the multiplexed signal k being about 4 to 5, and controls the attenuators 21.sub.1 to 21.sub.n to attenuate the average power of the modulated signal by k/n-fold or less for about 1/.DELTA.F.sub.0 (sec), where (.DELTA.F.sub.0 �Hz! is the frequency bandwidth of the multiplexed signal.
摘要翻译： PCT No.PCT / JP95 / 02467 Sec。 371日期1996年6月7日第 102（e）日期1996年6月7日PCT 1995年12月4日PCT PCT。公开号WO96 / 18249 日期1996年6月13日经由端口111至11n馈送的输入调制信号的频率由频率转换部分121至12n转换为不同频带，并且转换后的输出被施加到功率合成部分24通过可变衰减器211至21n判定16 ，并作为其一部分分支的多路复用输出。包络功率电平L由电平检测部23检测。具有检测电平L的控制超过多路复用信号k的k倍的k倍的电平Ls为约4〜5，并且控制衰减器211〜21n衰减对于约1 / DELTA F0（sec），调制信号的平均功率为k / n倍或更小，其中（DELTA F0 [Hz]是多路复用信号的频率带宽）。

2. 发明授权

US07327996B2 High sensitivity radio receiver 有权
标题翻译：高灵敏度无线电接收机
公开(公告)号：US07327996B2
公开(公告)日：2008-02-05
申请号：US10725002
申请日：2003-12-02
申请人： Ning Chen , Yoshiaki Tarusawa , Kei Satoh , Shoichi Narahashi , Noriyoshi Terada , Toshio Nojima
发明人： Ning Chen , Yoshiaki Tarusawa , Kei Satoh , Shoichi Narahashi , Noriyoshi Terada , Toshio Nojima
IPC分类号： H04B1/10
CPC分类号： H04B1/18 , H04B1/036
摘要： The invention relates to a high sensitivity receiver installed outdoors which may be used in a base station of a mobile communication system, for example. A received radio frequency signal is converted into a signal in a desired frequency band by a reception bandpass filter RXF3, is subject to a low noise amplification to a desired level by a low noise reception amplifier LNA4, and the amplified signal is converted into an optical signal by a laser diode LD5. RXF3, LNA4 and LD5 are confined in a heat shielding box. LD5 is cooled by cooling means to the order of critical temperature where RXF3, for example, assumes a superconducting state, whereby the dynamic range is increased and stabilized.
摘要翻译：本发明涉及一种安装在户外的高灵敏度接收机，其可以在例如移动通信系统的基站中使用。接收的射频信号由接收带通滤波器RXF 3转换成期望频带的信号，由低噪声接收放大器LNA4进行低噪声放大到期望的电平，并将放大的信号转换为由激光二极管LD5的光信号。 RXF 3，LNA 4和LD 5被限制在隔热箱中。 LD 5通过冷却装置冷却至临界温度的顺序，其中RXF 3例如呈现超导状态，从而动态范围增加并稳定。

3. 发明授权

US5231632A Radio communication equipment for a mobile station and traffic channel hand-off method using the same 失效
标题翻译：使用移动站的无线电通信设备和使用该移动站的交通信道切换方法
公开(公告)号：US5231632A
公开(公告)日：1993-07-27
申请号：US617369
申请日：1990-11-23
申请人： Yasushi Yamao , Yoshiaki Tarusawa , Toshio Nojima
发明人： Yasushi Yamao , Yoshiaki Tarusawa , Toshio Nojima
IPC分类号： H04W36/08 , H04W36/18
CPC分类号： H04W88/02 , H04W36/18
摘要： In radio communication equipment for use in a mobile station, provision is made for selectively applying either one of the oscillation outputs of first and second local oscillators to a transmitting part and a receiving part by first and second RF switches, respectively. In a traffic channel hand-off system for a mobile communication system in which each time the mobile station moves from a certain zone to another, its traffic channel is switched to another traffic channel of a different frequency, a control part responds to a traffic channel assigning signal from the current base station to allot an idle one of the local oscillators to the assigned channel, set the allotted local oscillator to an oscillation frequency corresponding to the assigned channel, and control the second RF switch, in an idle time of the receiving part in the current communication, to set the receiving part to the assigned channel for receiving a down link hand-off preparatory signal from a new base station. Further, the control part controls the first RF switch, in an idle time of the transmitting part in the current communication, to set the transmitting part to the assigned channel for transmitting an up link hand-off preparatory signal to the new base station. These preparatory procedures are followed by controlling the first and second RF switches to supply the oscillation output of the allotted local oscillator to the transmitting part and the receiving part, thereby completing the traffic channel hand-off without momentarily interrupting the communication.

4. 发明申请

US20060172432A1 Apparatus for measuring absorbed power 有权
标题翻译：用于测量吸收功率的装置
公开(公告)号：US20060172432A1
公开(公告)日：2006-08-03
申请号：US11392570
申请日：2006-03-30
申请人： Takahiro Iyama , Yoshiaki Tarusawa , Shinji Uebayashi , Toshio Nojima
发明人： Takahiro Iyama , Yoshiaki Tarusawa , Shinji Uebayashi , Toshio Nojima
IPC分类号： G01N33/00
CPC分类号： G01R29/08
摘要： In an apparatus for measuring absorbed power including an electromagnetic field probe 1 fixedly mounted within a head simulation phantom 2 which simulates the configuration and the electromagnetic characteristics of a head of a human body, and wherein the strength of an electric field or a magnetic field of a radio wave externally irradiated upon the head simulation phantom 2 is measured by the electromagnetic field probe 1, and the power of the radio wave absorbed by the head is estimated on the basis of measured values, the head simulation phantom 2 comprises a solid dielectric 10′ which simulates the configuration and the electromagnetic characteristics of a head of a human body or a liquid dielectric 10 which simulates the electromagnetic characteristics of a head of a human body and which is filled in an enclosed vessel 10 which simulates the configuration of a head of a human body. The volume of the solid dielectric 10′ or the volume of the enclosed vessel 11 is equal to or less than 5×105 mm3.
摘要翻译：在一种用于测量吸收功率的装置中，包括固定地安装在模拟人体头部的构型和电磁特性的头模拟体模2内的电磁场探针1，并且其中电场或磁场的强度通过电磁场探头1测量外部照射到头部模拟体模2上的无线电波，并且基于测量值来估计头部吸收的无线电波的功率，头部模拟模型2包括固体电介质10 其模拟人体头部或液体电介质10的结构和电磁特性，其模拟人体头部的电磁特性，并且填充在封闭容器10中，该容器10模拟头部的头部的构造一个人体固体电介质10'的体积或封闭容器11的体积等于或小于5×10 5 mm 3。

5. 发明授权

US5812296A Fiber optics transmission system 失效
标题翻译：光纤传输系统
公开(公告)号：US5812296A
公开(公告)日：1998-09-22
申请号：US776925
申请日：1997-02-11
申请人： Yoshiaki Tarusawa , Toshio Nojima , Yasushi Ito
发明人： Yoshiaki Tarusawa , Toshio Nojima , Yasushi Ito
IPC分类号： H04B10/077 , H04B10/079 , H04B10/25 , H04B10/2507 , H04B10/2575 , H04B10/54 , H04B10/572 , H04B10/12
CPC分类号： H04B10/278 , H04B10/25753 , H04B10/27
摘要： In a fiber optics transmission system in which a plurality of access units are cascade-connected via up-link and down-link optical fiber lines and connected to a base unit, the base unit has a beat noise detector and a noise information generator and, upon detection of beat noise, noise information is sent to each access unit over the optical fiber lines. Each access unit has a random signal generator for generating a random value in response to the noise information and a wavelength control circuit for randomly selecting and controlling the oscillation wavelength of a laser diode, and each access unit repeats random wavelength selection until the noise information is reduced.
摘要翻译： PCT No.PCT / JP96 / 02340 Sec。 371日期1997年2月11日 102（e）日期1997年2月11日PCT提交1996年8月22日PCT公布。出版物WO97 / 08856 日期1997年3月6日在其中多个存取单元通过上链路和下行链路光纤线路级联连接并连接到基本单元的光纤传输系统中，基本单元具有拍频噪声检测器和噪声信息发生器，并且在检测到节拍噪声时，通过光纤线路将噪声信息发送到每个存取单元。每个访问单元具有随机信号发生器，用于响应于噪声信息产生随机值，以及用于随机选择和控制激光二极管的振荡波长的波长控制电路，并且每个存取单元重复随机波长选择，直到噪声信息为减少

6. 发明授权

US5302908A High precision phase comparator and phase locked loop 失效
标题翻译：高精度相位比较器和锁相环
公开(公告)号：US5302908A
公开(公告)日：1994-04-12
申请号：US995163
申请日：1992-12-22
申请人： Yoshiaki Tarusawa , Toshio Nojima , Kazuaki Murota
发明人： Yoshiaki Tarusawa , Toshio Nojima , Kazuaki Murota
IPC分类号： H03K5/26 , G01R25/08 , H03D13/00 , H03L7/091 , H03L7/183 , H03K9/06
CPC分类号： G01R25/08 , H03D13/001 , H03L7/091 , H03L7/183
摘要： A modulus counter counts first clock pulses to modulus M and outputs the count value as an m-bit reference signal, M being an integer. A latch circuit samples and holds the reference signal in response to a trigger signal generated by a trigger signal generator in synchronism with an input signal. A high-speed counter is supplied with second clock pulses of a frequency higher than that of the first clock pulses and starts counting the second clock pulses in response to the trigger signal and stops the counting in response to a first one of the first clock pulses immediately thereafter. A data processor converts the n-bit count value of the high-speed counter to n-bit data corresponding to a phase fraction of a phase quantization step in the latch, combines the n-bit data as low-order bits with m-bit data from the latch and outputs the combined data as phase difference data.
摘要翻译：模数计数器将第一个时钟脉冲计数为模数M，并将该计数值作为m位参考信号输出，M为整数。锁存电路响应于与输入信号同步的触发信号发生器产生的触发信号，采样并保持参考信号。向高速计数器提供频率高于第一时钟脉冲的第二时钟脉冲，并响应于触发信号开始对第二时钟脉冲进行计数，并响应于第一时钟脉冲中的第一时钟脉冲停止计数此后立即。数据处理器将高速计数器的n位计数值转换为对应于锁存器中的相位量化步长的相位分数的n位数据，将n位数据组合为低位位与m位来自锁存器的数据作为相位差数据输出。

7. 发明授权

US4980652A Frequency synthesizer having compensation for nonlinearities 失效
标题翻译：具有非线性补偿的频率合成器
公开(公告)号：US4980652A
公开(公告)日：1990-12-25
申请号：US400665
申请日：1989-08-31
申请人： Yoshiaki Tarusawa , Shigeki Saito , Yasushi Yamao , Toshio Nojima
发明人： Yoshiaki Tarusawa , Shigeki Saito , Yasushi Yamao , Toshio Nojima
IPC分类号： H03L7/14 , H03L7/189 , H03L7/199
CPC分类号： H03L7/189 , H03L7/14 , H03L7/199 , H03L2207/05
摘要： In a phase locked loop frequency synthesizer, the frequency of a VCO is switched by changing the division ratio of a variable ratio frequency divider in the feedback path of the loop. At the time of switching, a prepositioning voltage is applied to the VCO to realize fast frequency switching. To correct for nonlinear response of the VCO, the prepositioning voltage is adjusted according to information received from a voltage measuring circuit connected to the VCO control circuit.

8. 发明授权

US07615188B2 Apparatus for measuring absorbed power 有权
标题翻译：用于测量吸收功率的装置
公开(公告)号：US07615188B2
公开(公告)日：2009-11-10
申请号：US11392570
申请日：2006-03-30
申请人： Takahiro Iyama , Yoshiaki Tarusawa , Shinji Uebayashi , Toshio Nojima
发明人： Takahiro Iyama , Yoshiaki Tarusawa , Shinji Uebayashi , Toshio Nojima
IPC分类号： C12Q1/68 , H04B1/10 , G01N27/00
CPC分类号： G01R29/08
摘要： In an apparatus for measuring absorbed power including an electromagnetic field probe 1 fixedly mounted within a head simulation phantom 2 which simulates the configuration and the electromagnetic characteristics of a head of a human body, and wherein the strength of an electric field or a magnetic field of a radio wave externally irradiated upon the head simulation phantom 2 is measured by the electromagnetic field probe 1, and the power of the radio wave absorbed by the head is estimated on the basis of measured values, the head simulation phantom 2 comprises a solid dielectric 10′ which simulates the configuration and the electromagnetic characteristics of a head of a human body or a liquid dielectric 10 which simulates the electromagnetic characteristics of a head of a human body and which is filled in an enclosed vessel 10 which simulates the configuration of a head of a human body. The volume of the solid dielectric 10′ or the volume of the enclosed vessel 11 is equal to or less than 5×105 mm3.
摘要翻译：在一种用于测量吸收功率的装置中，包括固定地安装在模拟人体头部的构型和电磁特性的头模拟体模2内的电磁场探针1，并且其中电场或磁场的强度通过电磁场探头1测量外部照射到头部模拟体模2上的无线电波，并且基于测量值来估计头部吸收的无线电波的功率，头部模拟模型2包括固体电介质10 其模拟人体头部或液体电介质10的结构和电磁特性，其模拟人体头部的电磁特性，并且填充在封闭容器10中，该容器10模拟头部的头部的构造一个人体固体电介质10'的体积或封闭容器11的体积等于或小于5×10 5 mm 3。

9. 发明授权

US07186377B2 Absorption power measuring device 失效
标题翻译：吸收功率测量装置
公开(公告)号：US07186377B2
公开(公告)日：2007-03-06
申请号：US10398205
申请日：2002-08-08
申请人： Takahiro Iyama , Yoshiaki Tarusawa , Shinji Uebayashi , Toshio Nojima
发明人： Takahiro Iyama , Yoshiaki Tarusawa , Shinji Uebayashi , Toshio Nojima
IPC分类号： C12Q1/68 , G01N15/06 , G01N33/00 , G01N33/48 , G01N25/18
CPC分类号： G01R29/08
摘要： In an apparatus for measuring absorbed power including an electromagnetic field probe 1 fixedly mounted within a head simulation phantom 2 which simulates the configuration and the electromagnetic characteristics of a head of a human body, and wherein the strength of an electric field or a magnetic field of a radio wave externally irradiated upon the head simulation phantom 2 is measured by the electromagnetic field probe 1, and the power of the radio wave absorbed by the head is estimated on the basis of measured values, the head simulation phantom 2 comprises a solid dielectric 10′ which simulates the configuration and the electromagnetic characteristics of a head of a human body or a liquid dielectric 10 which simulates the electromagnetic characteristics of a head of a human body and which is filled in an enclosed vessel 10 which simulates the configuration of a head of a human body. The volume of the solid dielectric 10′ or the volume of the enclosed vessel 11 is equal to or less than 5×105 mm3.
摘要翻译：在一种用于测量吸收功率的装置中，包括固定地安装在模拟人体头部的构型和电磁特性的头模拟体模2内的电磁场探针1，并且其中电场或磁场的强度通过电磁场探头1测量外部照射到头部模拟体模2上的无线电波，并且基于测量值来估计头部吸收的无线电波的功率，头部模拟模型2包括固体电介质10 其模拟人体头部或液体电介质10的结构和电磁特性，其模拟人体头部的电磁特性，并且填充在封闭容器10中，该容器10模拟头部的头部的构型一个人体固体电介质10'的体积或封闭容器11的体积等于或小于5×10 5 mm 3。

10. 发明授权

US07013087B2 Communication system using optical fibers 有权
公开(公告)号：US07013087B2
公开(公告)日：2006-03-14
申请号：US09983705
申请日：2001-10-25
申请人： Yasunori Suzuki , Ning Chen , Yoshiaki Tarusawa , Toshio Nojima
发明人： Yasunori Suzuki , Ning Chen , Yoshiaki Tarusawa , Toshio Nojima
IPC分类号： H04B10/00 , H04B10/24 , H04B7/00 , H04J14/00
CPC分类号： H04B10/25755
摘要： A divider/combiner unit combines RF signals, then converts the combined signal into an optical signal and sends it over an optical fiber. N radio access units each convert the optical signal received from the optical fiber into an RF signal and transmits it from an antenna, and each radio access unit converts an RF signal received by the antenna into an optical signal and sends it over an optical fiber to the divider/combiner unit. The divider/combiner unit converts the received optical signal into RF signals and outputs them. This system is operated as plurality of communication systems in common to them in correspondence to a plurality of input/output terminals of the divider/combiner unit.

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