公开(公告)号：US5202906A

公开(公告)日：1993-04-13

申请号：US137129

申请日：1987-12-23

申请人： Shigeki Saito ,  Hiroshi Suzuki ,  Yoshiaki Tarusawa

发明人： Shigeki Saito ,  Hiroshi Suzuki ,  Yoshiaki Tarusawa

IPC分类号： H03L3/00 ,  H03L7/08 ,  H03L7/10 ,  H03L7/14 ,  H03L7/197 ,  H03L7/199

CPC分类号： H03L7/14 ,  H03L3/00 ,  H03L7/0802 ,  H03L7/10 ,  H03L7/1972 ,  H03L7/199

摘要： A frequency division scheme which offsets for a phase lag produced on initial power-on is described. A division ratio of a programmable counter is initially set at a first division ratio at the time of releasing the programmable counter from its reset state. When the first division cycle is complete, the division ratio is reset to its steady state value. Thus, a delay equivalent to the phase lag is produced. A frequency synthesizer is also proposed where the division ratio is set, and a phase difference is detected. Reset signals are continually set while the phase difference is changed. This cycle is continued until the phase difference is reduced to one cycle of the input signals or less.

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.

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）。

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。

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.

公开(公告)号：US07373129B2

公开(公告)日：2008-05-13

申请号：US10765830

申请日：2004-01-29

申请人： Atsushi Fukuda ,  Yoshiaki Tarusawa ,  Noriyoshi Terada

发明人： Atsushi Fukuda ,  Yoshiaki Tarusawa ,  Noriyoshi Terada

IPC分类号： H04B1/10

CPC分类号： H04B1/126 ,  H04B1/123

摘要： A radio communication terminal disposed in close proximity to or built in electronic equipment is provided with a receiver connected to a receiving antenna and an interference canceller for removing from a received signal a radiated noise component from the electronic equipment received by the receiving antenna. The interference canceller includes a radiated noise predictor which predicts the radiated noise component in the received signal based on the radiated noise from the electronic equipment and generates a pseudo interference signal accordingly, and an adder which cancels the radiated noise component in the received signal by the pseudo interference signal.

摘要翻译： 设置在电子设备附近或内置的无线电通信终端设置有连接到接收天线的接收机和干扰消除器，用于从接收信号中去除由接收天线接收的电子设备的辐射噪声分量。 干扰消除器包括辐射噪声预测器，其基于来自电子设备的辐射噪声来预测接收信号中的辐射噪声分量，并相应地产生伪干扰信号，以及加法器，其通过所述接收信号消除接收信号中的辐射噪声分量 伪干扰信号。

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。

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

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。

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。