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    Wireless unit for a time division multiple access system
    42.
    发明公开
    Wireless unit for a time division multiple access system 失效
    Drahtlose VorrichtungfürZeitmultiplex-Vielfachzugriffssystem

    公开(公告)号：EP0744831A2

    公开(公告)日：1996-11-27

    申请号：EP96107777.3

    申请日：1996-05-15

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Ishida, Kaoru ,  Kosugi, Hiroaki ,  Sasaki, Fujio ,  Morinaga, Yoichi ,  Ishizaki, Toshio ,  Sakakura, Makoto ,  Yamada, Toru

    IPC分类号： H03H7/46 ,  H03H7/38 ,  H03B5/18 ,  H03K17/693 ,  H04B7/26 ,  H01P1/203

    CPC分类号： H01P1/20345 ,  H01P1/2135 ,  H03B2201/0208 ,  H03H7/38 ,  H03H7/46 ,  H03H2007/386 ,  H04B1/005 ,  H04B1/0057 ,  H04B1/006 ,  H04B1/406 ,  H04B1/48

    摘要： A time division multiple access FDD wireless unit has a first local oscillator 8 for oscillating a first frequency; a second local oscillator 12 for oscillating a second frequency; a n-times multiplier 14 for multiplying the second frequency by n; a m-times multiplier 18 for multiplying the second frequency by m; a converter 6 for transmitting frequency of difference between a reception signal and an output of the first local oscillator 8; a converter 11 for transmitting frequency of sum or difference between an output of the converter 6 and an output of the n-times multiplier 14; modulator 19 for modulating an output of the m-times multiplier 18; a converter 22 for transmitting frequency of sum of an output of the modulator 19 and the output of m-times multiplier 18.

    摘要翻译： 时分多址FDD无线单元具有用于振荡第一频率的第一本地振荡器8; 用于振荡第二频率的第二本地振荡器12; 用于将第二频率乘以n的n次乘法器14; m倍乘法器18，用于将第二频率乘以m; 用于发送接收信号和第一本地振荡器8的输出之间的差的频率的转换器6; 用于发送转换器6的输出和n次乘法器14的输出之间的和或差的频率的转换器11; 调制器19，用于调制m次乘法器18的输出; 用于发送调制器19的输出和m次乘法器18的输出的和的频率的转换器22

    Frequency synthesizer
    43.
    发明公开
    Frequency synthesizer 失效
    Frequenzsynthesizer

    公开(公告)号：EP0684701A2

    公开(公告)日：1995-11-29

    申请号：EP95108033.2

    申请日：1995-05-24

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Matsumoto, Takayuki ,  Adachi, Hisashi ,  Kosugi, Hiroaki ,  Sakakura, Makoto

    IPC分类号： H03L7/093 ,  H03L7/187

    CPC分类号： H03L7/093 ,  H03L7/107 ,  H03L7/187

    摘要： In accordance with a loop open/close control signal, an analog switch 60 can close or open a loop which consists of a voltage controlled oscillator 1, a variable frequency divider 2, a phase comparator 3, a first loop filter 451, the analog switch 60, and a second loop filter 452. In order to reduce the change of frequency caused when the open loop state is set immediately after the output frequency is changed, the second loop filter 452 uses a capacitor which shows properties of a small change of the capacitance in response to an applied voltage and a small hysteresis.
    In order to reduce the change of frequency caused when the open loop state is set immediately after the output frequency is changed, furthermore, a second diode one terminal of which is grounded is connected in reverse parallel to a first diode switch which switches the output oscillation frequency ranges of the voltage controlled oscillator.

    摘要翻译： 根据环路开/关控制信号，模拟开关60可以闭合或打开由压控振荡器1，可变分频器2，相位比较器3，第一环路滤波器451，模拟开关 60和第二环路滤波器452.为了减少在输出频率改变后立即设置开环状态时引起的频率变化，第二环路滤波器452使用电容器，该电容器显示出 响应于施加的电压和小滞后的电容。 为了减少在输出频率变化之后立即设定开环状态时引起的频率变化，此外，其一端接地的第二二极管与第一二极管开关反向并联连接，第一二极管开关切换输出振荡 压控振荡器的频率范围。