公开(公告)号：US5898345A

公开(公告)日：1999-04-27

申请号：US892201

申请日：1997-07-14

申请人： Yasuaki Namura ,  Hideyuki Fukuda

发明人： Yasuaki Namura ,  Hideyuki Fukuda

IPC分类号： H03B1/00 ,  H03B5/12 ,  H03B5/32 ,  H03B5/36 ,  H03L1/02 ,  H03L7/099 ,  H03L7/189 ,  G03B5/00

CPC分类号： H03L7/189 ,  H03B5/368 ,  H03L1/025 ,  H03L7/099 ,  H03B2201/0208 ,  H03B2201/0283 ,  H03L2207/06

摘要： A controllable-frequency oscillator has a first portion for generating a signal having a controllable frequency. The controllable-frequency oscillator has a second portion for controlling the frequency of the signal generated by the first portion in response to a first control signal. The controllable-frequency oscillator has a third portion for controlling the frequency of the signal generated by the first portion in response to a second control signal separate from the first control signal.

摘要翻译： 可控频率振荡器具有用于产生具有可控频率的信号的第一部分。 可控频率振荡器具有第二部分，用于响应于第一控制信号来控制由第一部分产生的信号的频率。 可控频率振荡器具有第三部分，用于响应于与第一控制信号分离的第二控制信号来控制由第一部分产生的信号的频率。

公开(公告)号：US5293408A

公开(公告)日：1994-03-08

申请号：US942183

申请日：1992-09-09

申请人： Kazuaki Takahashi ,  Makoto Hasegawa ,  Katsushi Yokozaki ,  Yasumi Imagawa ,  Hiroyuki Harada ,  Masahiro Mimura ,  Yasuaki Namura

发明人： Kazuaki Takahashi ,  Makoto Hasegawa ,  Katsushi Yokozaki ,  Yasumi Imagawa ,  Hiroyuki Harada ,  Masahiro Mimura ,  Yasuaki Namura

IPC分类号： H04B1/30 ,  H04L27/152 ,  H04B1/10

CPC分类号： H04B1/30 ,  H04L27/152

摘要： A data receiving system comprising an I base-band signal and a Q base-band signal which are used in a quadrature demodulation operation. Zero-crossing points of respective base-band signals are detected and a control signal is generated in response to each zero-crossing point. A phase-shift switching circuit alternately selects either the I base-band signal or the Q base-band signal in response to the control signal to generate an I/Q base-band signal. And, a demodulation operation is executed on the basis of the I/Q signal.

摘要翻译： 一种数据接收系统，包括在正交解调操作中使用的I基带信号和Q基带信号。 检测各基带信号的过零点，并响应于每个过零点产生控制信号。 相移切换电路响应于控制信号交替地选择I基带信号或Q基带信号以产生I / Q基带信号。 并且，基于I / Q信号执行解调操作。

公开(公告)号：US07146137B2

公开(公告)日：2006-12-05

申请号：US10479012

申请日：2002-06-06

申请人： Yasuaki Namura

发明人： Yasuaki Namura

IPC分类号： H04B1/44

CPC分类号： H04B1/005 ,  H01P1/15 ,  H04B1/48

摘要： To provide a high frequency switch capable of dealing with multiple frequency bands without having plurality of switch circuits. A first diode that conducts due to a bias current when a first switch is closed is interposed between first signal terminal and a second signal terminal. A strip line with the electrical length L1 is connected to the cathode of the first diode, the other end being grounded. At a position with a distance L2 from one end of the strip line, a capacitor and a second switch are connected to be equivalently grounded when the second switch is closed. The strip line resonates with the electrical length L1 when the second switch is opened, and resonates with the electrical length L2 when the second switch is closed.

摘要翻译： 提供能够处理多个频带而不具有多个开关电路的高频开关。 当第一开关闭合时由于偏置电流导通的第一二极管插在第一信号端和第二信号端之间。 具有电长度L L1的带状线连接到第一二极管的阴极，另一端接地。 在带状线的一端距离为L 2 <2>的位置处，当第二开关闭合时，连接电容器和第二开关等效接地。 当第二开关断开时，带状线与电气长度L 1＆lt; 1＆lt; 1＆gt;共振，并且当第二开关闭合时与带电长度L 2 2谐振。

公开(公告)号：US5606574A

公开(公告)日：1997-02-25

申请号：US305513

申请日：1994-09-13

申请人： Makoto Hasegawa ,  Masahiro Mimura ,  Hirohide Hirabayashi ,  Naoki Adachi ,  Yasuaki Namura ,  Hideko Sakai

发明人： Makoto Hasegawa ,  Masahiro Mimura ,  Hirohide Hirabayashi ,  Naoki Adachi ,  Yasuaki Namura ,  Hideko Sakai

IPC分类号： G01S13/76 ,  G01S13/78 ,  H04B7/26

CPC分类号： G01S13/782 ,  G01S13/767 ,  G01S13/784

摘要： A first mobile unit identification system having a interrogator and responder. The interrogator transmits a given magnitude of a spread spectrum coded signal in standby mode. The responder receives the spread spectrum coded signal and when the magnitude of received signal exceeds a given value, it reflects the transmitted spread spectrum coded signal with ID code when the magnitude of received signal exceeds the given value. The interrogator receives this and then, transmits data to the responder with amplitude modulating the spread spectrum coded signal with the data. The responder detects by amplitude demodulation and stores the detected data. The interrogator may transmit a mode change code. The responder may transmit an end code after transmission of a data train. A second interrogator informs the responder of the standby mode thereof by amplitude-modulated signal having a given cycle. A second responder judges whether or not the second interrogator is in standby mode by detecting the cycle and sends a communication requesting signal Q to the second responder and then, transmits ID code. In response to the signal Q, tile second interrogator transmits a signal having a fixed magnitude. A method of modulating for the mobile unit identifying system is also disclosed.

摘要翻译： 具有询问器和应答器的第一移动单元识别系统。 询问器在待机模式下发送给定幅度的扩频编码信号。 应答器接收扩频编码信号，当接收信号的幅度超过给定值时，当接收信号的幅度超过给定值时，它反映发射的具有ID码的扩频编码信号。 询问器接收该数据，然后利用数据对扩展频谱编码信号进行幅度调制，向响应者发送数据。 响应者通过幅度解调检测并存储检测到的数据。 询问器可以发送模式改变码。 响应者可以在传输数据列之后发送结束码。 第二询问器通过具有给定周期的幅度调制信号向响应者通知其备用模式。 第二响应者通过检测周期来判断第二询问器是否处于待机模式，并向第二应答器发送通信请求信号Q，然后发送ID码。 响应于信号Q，瓦片第二询问器发送具有固定大小的信号。 还公开了一种调制移动单元识别系统的方法。

公开(公告)号：US07250829B2

公开(公告)日：2007-07-31

申请号：US11549663

申请日：2006-10-16

申请人： Yasuaki Namura

发明人： Yasuaki Namura

IPC分类号： H01P1/10 ,  H04B1/44

CPC分类号： H04B1/005 ,  H01P1/15 ,  H04B1/48

摘要： To provide a high frequency switch capable of dealing with multiple frequency bands without having plurality of switch circuits. A first diode that conducts due to a bias current when a first switch is closed is interposed between a first signal terminal and a second signal terminal. A strip line with the electrical length L1 is connected to the cathode of the first diode, the other end being grounded. At a position with the distance L2 from one end of the strip line, a capacitor and a second switch are connected to be equivalently grounded when a second switch is closed. The strip line resonates with the electrical length L1 when the second switch is opened, and resonates with the electrical length L2 when the second switch is closed.

摘要翻译： 提供能够处理多个频带而不具有多个开关电路的高频开关。 当第一开关闭合时由于偏置电流导通的第一二极管插在第一信号端和第二信号端之间。 具有电长度L L1的带状线连接到第一二极管的阴极，另一端接地。 在带状线的一端具有距离L 2> 2的位置处，当第二开关闭合时，连接电容器和第二开关等效接地。 当第二开关断开时，带状线与电气长度L 1＆lt; 1＆lt; 1＆gt;共振，并且当第二开关闭合时与带电长度L 2 2谐振。

公开(公告)号：US20070035359A1

公开(公告)日：2007-02-15

申请号：US11549663

申请日：2006-10-16

申请人： Yasuaki Namura

发明人： Yasuaki Namura

IPC分类号： H01P1/15

CPC分类号： H04B1/005 ,  H01P1/15 ,  H04B1/48

摘要： To provide a high frequency switch capable of dealing with multiple frequency bands without having plurality of switch circuits. A first diode that conducts due to a bias current when a first switch is closed is interposed between a first signal terminal and a second signal terminal. A strip line with the electrical length L1 is connected to the cathode of the first diode, the other end being grounded. At a position with the distance L2 from one end of the strip line, a capacitor and a second switch are connected to be equivalently grounded when a second switch is closed. The strip line resonates with the electrical length L1 when the second switch is opened, and resonates with the electrical length L2 when the second switch is closed.

公开(公告)号：US07079596B1

公开(公告)日：2006-07-18

申请号：US09535303

申请日：2000-03-24

申请人： Yasuaki Namura

发明人： Yasuaki Namura

IPC分类号： H04L27/22

CPC分类号： H03D7/166 ,  H04B1/0082

摘要： A quadrature demodulator 408′ and a quadrature modulator 908′ convert a reception intermediate frequency signal 151 into reception baseband signals 157 and 158, and also convert transmission baseband signals 657 and 658 into a transmission intermediate frequency signal 651, respectively. While local oscillation signals having frequencies suitable for the respective bands are outputted from a commonly used local oscillator 111, such a local oscillation signal obtained by shifting a phase thereof π/2 by a phase shifter 412 is supplied to one mixer of quadrature mixers 109 and 609, and such a signal obtained by inverting, or not inverting the plurality of the local oscillation signal by an exclusive OR gate circuit 413 in response to a band switching signal 153 is supplied to the other mixer of quadrature mixers 110 and 610.

摘要翻译： 正交解调器408'和正交调制器908'将接收中频信号151转换为接收基带信号157和158，并且还将发送基带信号657和658分别转换为发送中频信号651。 虽然具有适合于各个频带的频率的本地振荡信号从常用的本地振荡器111输出，但是通过移相器412将其相位pi / 2移相而获得的本地振荡信号被提供给正交混频器109和 609，并且通过异或门电路413响应于频带切换信号153反相或不反相多个本地振荡信号而获得的信号被提供给正交混频器110和610的另一个混频器。

公开(公告)号：US06226537B1

公开(公告)日：2001-05-01

申请号：US09193786

申请日：1998-11-17

申请人： Yasuaki Namura ,  Atsushi Tsuchida ,  Junichi Takada ,  Hiroshi Ohnishi

发明人： Yasuaki Namura ,  Atsushi Tsuchida ,  Junichi Takada ,  Hiroshi Ohnishi

IPC分类号： H04B138

CPC分类号： H04W52/0209 ,  H03F2203/7227 ,  H03F2203/7239 ,  Y02D70/00

摘要： A portable radio device including a frequency synthesizer 5 for producing a local signal for radio section, a digital control circuit 6 for digitally controlling a portion of or the entirety of the radio device, and a reference signal generator 1 which operates the frequency synthesizer and the digital control circuit, wherein a buffer amplifier 2 is provided between the reference signal generator and the digital control circuit, and switching means 4 is provided in parallel with the buffer amplifier between the reference signal generator and the digital control circuit. When the frequency synthesizer is inactive, the switching means is activated, and a power supply 3 of the buffer amplifier is deactivated. As a result, the power dissipated by the buffer amplifier can be reduced without deteriorating the characteristics of the frequency synthesizer.

摘要翻译： 一种便携式无线电设备，包括用于产生无线电部分的本地信号的频率合成器5，用于数字控制无线电设备的一部分或全部的数字控制电路6和操作频率合成器的参考信号发生器1和 数字控制电路，其中缓冲放大器2设置在参考信号发生器和数字控制电路之间，开关装置4与参考信号发生器和数字控制电路之间的缓冲放大器并联设置。 当频率合成器不活动时，切换装置被激活，并且缓冲放大器的电源3被停用。 结果，可以减小由缓冲放大器消耗的功率，而不会降低频率合成器的特性。