利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

140 条记录 (耗时 0.014 秒)

    Differential amplifier output leading circuit, and intermediate frequency amplifier using same
    113.
    发明授权
    Differential amplifier output leading circuit, and intermediate frequency amplifier using same 失效
    差分放大器输出引脚电路，和中频放大器使用相同

    公开(公告)号：US4495469A

    公开(公告)日：1985-01-22

    申请号：US442328

    申请日：1982-11-17

    申请人： Tatsuo Numata

    发明人： Tatsuo Numata

    IPC分类号： H03F3/343 ,  H03F3/19 ,  H03F3/34 ,  H03F3/45 ,  H03G11/06

    CPC分类号： H03F3/19 ,  H03G11/06

    摘要： A differential output leading circuit forming a part of an IF amplifier includes a pair of common collector connected transistors which receive, at control electrodes, outputs from a differential amplifier, by way of emitter follower circuits having constant current loads.

    摘要翻译： 形成IF放大器的一部分的差分输出引线电路包括一对公共集电极连接的晶体管，其通过具有恒定电流负载的射极跟随器电路在控制电极处接收来自差分放大器的输出。

    Amplitude limiting circuit for frequency modulated video signals
    115.
    发明授权
    Amplitude limiting circuit for frequency modulated video signals 失效
    用于调频视频信号的幅度限制电路

    公开(公告)号：US4064537A

    公开(公告)日：1977-12-20

    申请号：US704848

    申请日：1976-07-13

    申请人： Yoshihiko Ota ,  Akira Hirota

    发明人： Yoshihiko Ota ,  Akira Hirota

    IPC分类号： H03G9/18 ,  H03G11/06 ,  H04N5/931 ,  H04N5/94 ,  H04N5/76

    CPC分类号： H04N5/94 ,  H03G11/06 ,  H03G9/18 ,  H04N5/9315

    摘要： An amplitude limiting circuit comprises a high-pass filter for passing the high frequency components of a frequency modulated video signal. The centerline of a signal portion has an amplitude width which is non-linear. A first amplitude limiter both limits and amplifies the output signal from the high-pass filter. A low-pass filter passes the low frequency component of the frequency modulated video signal. An adder adds the resulting output signals of the first amplitude limiter and the low-pass filter. A second amplitude limiter limits the resulting output of the adder.

    摘要翻译： 振幅限制电路包括用于通过调频视频信号的高频分量的高通滤波器。 信号部分的中心线具有非线性的幅度宽度。 第一限幅器既限制并放大来自高通滤波器的输出信号。 低通滤波器通过调频视频信号的低频分量。 加法器将所得到的第一限幅器和低通滤波器的输出信号相加。 第二个限幅器限制加法器的结果输出。

    Amplitude limiter circuit
    116.
    发明授权
    Amplitude limiter circuit 失效
    幅度限幅电路

    公开(公告)号：US3943467A

    公开(公告)日：1976-03-09

    申请号：US570313

    申请日：1975-04-22

    申请人： Takahiko Yamada ,  Tadahiko Sakabe

    发明人： Takahiko Yamada ,  Tadahiko Sakabe

    IPC分类号： H03G11/02 ,  H03G11/06

    CPC分类号： H03G11/06

    摘要： An amplitude limiter circuit utilizing two sets of seriesdiode limiter circuits is disclosed. Each diode circuit has a pair of diodes in series but in abutting polarity. An input signal is applied through a phase converter with equal amplitudes and in opposite phases to each other to the diode circuits and a bias current is applied to each pair of diodes. To obtain an output signal having its level variation suppressed the currents passing through the parallel capacitances of the diodes in each circuit are offset with each other thereby resulting in an output signal not being subject to a shift in response to the variation of the input signal level.

    摘要翻译： 公开了一种利用两组串联二极管限幅电路的限幅电路。 每个二极管电路具有一对串联的二极管，但具有相邻的极性。 输入信号通过相位转换器以相等的幅度施加到二极管电路的相反相位，并且偏置电流被施加到每对二极管。 为了获得具有其电平变化的输出信号，通过每个电路中的二极管的并联电容的电流彼此偏移，从而导致输出信号不受响应于输入信号电平的变化的偏移 。

    Receiver interference suppression techniques and apparatus
    118.
    发明授权
    Receiver interference suppression techniques and apparatus 失效
    接收机干扰抑制技术和装置

    公开(公告)号：US3911366A

    公开(公告)日：1975-10-07

    申请号：US77378558

    申请日：1958-11-13

    申请人： BAGHDADY ELIE J

    发明人： BAGHDADY ELIE J

    IPC分类号： H03G11/06 ,  H04B1/12 ,  H04B1/16

    CPC分类号： H04B1/123 ,  H03G11/06

    摘要： 1. A frequency modulation receiver for separating a stronger and a weaker signal comprising two channels, first limiting means in a first channel, second limiting means in said first channel, limiting means in the second channel, linear transfer means in said second channel, and means for combining the outputs of the two channels.

    摘要翻译： 1.一种频率调制接收机，用于分离包括两个信道的较强和较弱信号，第一信道中的第一限制装置，所述第一信道中的第二限制装置，第二信道中的限制装置，所述第二信道中的线性传送装置，以及 用于组合两个通道的输出的装置。

    Controlled signal receiver
    119.
    发明授权
    Controlled signal receiver 失效
    受控信号接收机

    公开(公告)号：US3867707A

    公开(公告)日：1975-02-18

    申请号：US35280673

    申请日：1973-04-19

    申请人： HEWLETT PACKARD CO

    发明人： PERING RICHARD D ,  HALL JAMES A

    IPC分类号： H04N7/12 ,  H03D9/04 ,  H03G11/06 ,  H03H7/25 ,  H03D3/00

    CPC分类号： H03H7/255 ,  H03D9/04 ,  H03G11/06

    摘要： A microwave FM receiver is provided comprising a tuned radio frequency receiver utilizing microwave integrated circuits, the system including a novel automatic gain control limiter for AM suppression and a novel discriminator circuit for FM demodulation, said discriminator comprising a MIC transmission line structure provided with dissipative elements to absorb harmonics of the carrier frequency.

    摘要翻译： 提供了一种微波FM接收机，其包括利用微波集成电路的调谐射频接收机，该系统包括用于AM抑制的新型自动增益控制限制器和用于FM解调的新颖鉴频器电路，所述鉴频器包括具有耗散元件的MIC传输线结构 吸收载波频率的谐波。