利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

420 条记录 (耗时 0.014 秒)

    Traveling wave tube with non-reciprocal attenuating adjunct
    61.
    发明授权
    Traveling wave tube with non-reciprocal attenuating adjunct 失效
    行波管与非倒数衰减附件

    公开(公告)号：US4219758A

    公开(公告)日：1980-08-26

    申请号：US965452

    申请日：1978-11-30

    申请人： Arthur Karp

    发明人： Arthur Karp

    IPC分类号： H01P1/22 ,  H01J23/30 ,  H01J23/36 ,  H01J25/36 ,  H01P1/36 ,  H01P5/18 ,  H01J25/34

    CPC分类号： H01J23/30

    摘要： Oscillations due to backward waves in a high-power traveling-wave tube (TWT) are inhibited by a non-reciprocal attenuating device which essentially absorbs only backward waves. A directional coupler mediates the exchange of energy between the TWT interaction circuit and an external circuit containing a non-reciprocal loss element such as a ferrite isolator. In such embodiments the high-frequency power handled by the isolator is much less than the power in the TWT interaction circuit. The frequency band handled by the isolator is much narrower than that handled by the TWT. Coupling to the loss element is through one or more resonant circuit elements such that a "notch" of attenuation is obtained for a backward wave only, at a certain frequency where oscillations are prone, such as the frequency associated with 2.pi. phase shift per cavity in a coalesced-mode coupled-cavity TWT.

    摘要翻译： 在大功率行波管（TWT）中由于反向波而产生的振荡由基本仅吸收向后波的非互易衰减装置抑制。 定向耦合器介导TWT相互作用电路和包含诸如铁氧体隔离器之类的不可逆损耗元件的外部电路之间的能量交换。 在这样的实施例中，由隔离器处理的高频功率远小于TWT交互电路中的功率。 隔离器处理的频带比TWT处理的频带窄得多。 耦合到损耗元件是通过一个或多个谐振电路元件，使得在振荡易于发生的特定频率处仅针对反向波获得衰减的“陷波”，例如与每个腔的2π相移相关联的频率 在合并模式耦合腔TWT中。

    Isolator having reactive neutralizing means and predetermined angle between input-output windings
    62.
    发明授权
    Isolator having reactive neutralizing means and predetermined angle between input-output windings 失效
    具有反应性中和装置的隔离器和输入 - 输出绕组之间的预定角度

    公开(公告)号：US4210886A

    公开(公告)日：1980-07-01

    申请号：US943077

    申请日：1978-09-18

    申请人： Ralph T. Enderby ,  Lawrence N. Dworsky

    发明人： Ralph T. Enderby ,  Lawrence N. Dworsky

    IPC分类号： H01P1/365 ,  H01P1/36

    CPC分类号： H01P1/365

    摘要： A broadband isolator design wherein the amount of insertion loss may be traded for bandwidth and possibly reduced circuit complexity. The isolator may employ two windings or conductors with the neutralizing element connected across the input-output terminals, or may have a third winding placed to bisect the angle between the other windings and the neutralizing element coupled across this third winding. The angle between the windings and the isolator interconnection determine the specific bandwidth and insertion loss.

    摘要翻译： 一种宽带隔离器设计，其中可以为带宽交换插入损耗的量，并且可能降低电路复杂度。 隔离器可以采用两个绕组或导体，其中中和元件连接在输入 - 输出端子两端，或者可以具有第三绕组，其被设置成将其它绕组与耦合在该第三绕组上的中和元件之间的角度相等。 绕组和隔离器互连之间的角度决定了具体带宽和插入损耗。

    Power dividing and combining techniques for microwave amplifiers
    63.
    发明授权
    Power dividing and combining techniques for microwave amplifiers 失效
    微波放大器的功率分配和组合技术

    公开(公告)号：US4028632A

    公开(公告)日：1977-06-07

    申请号：US614711

    申请日：1975-09-17

    申请人： John L. Carter ,  Joseph McGowan

    发明人： John L. Carter ,  Joseph McGowan

    IPC分类号： H01P1/36 ,  H03F3/60

    CPC分类号： H01P1/362 ,  H03F3/602

    摘要： A novel microwave power divider is disclosed that is a combination of an ort junction circulator and a novel isolator-mismatch device for each circulator port other than one input port and divides microwave signal power incident to the input port into any desired ratio among the output ports and isolates all the ports from microwave power reflected back toward the divider after being propagated through the divider and thus prevents interaction among line devices, e.g. amplifier units, that are fed by the output ports. Also a novel microwave power combiner is disclosed that is a combination of an N-port junction circulator and a novel isolator-reflector device for each port other than one output port to combine at the one output port identical microwave signals or microwave signals that differ in frequency or phase incident to the isolator-reflector devices. The microwave power combiner, like the microwave power divider, provides isolation among the signal transmission lines. Also a novel solid-state microwave power amplifier is disclosed that includes the novel power divider, a solid-state power amplifier unit for each power fraction from the outputs of the divider and the novel power combiner for the amplified outputs of the power divider.

    摘要翻译： 公开了一种新颖的微波功率分配器，其是除了一个输入端口之外的用于每个循环器端口的新型隔离器 - 不匹配装置的N端口循环器和新型隔离器失配装置的组合，并且将入射到输入端口的微波信号功率分成任何所需的比例 输出端口，并将所有端口与微波功率隔离，并在分离器传播后反射回分频器，从而防止线路器件之间的相互作用，例如 放大器单元，由输出端口馈送。 还公开了一种新颖的微波功率组合器，其是除了一个输出端口之外的每个端口的N端口结环路器和新颖的隔离反射器装置的组合，以在一个输出端口处组合相同的微波信号或微波信号， 频率或相位入射到隔离反射器装置。 微波功率组合器，如微波功率分配器，在信号传输线之间提供隔离。 还公开了一种新颖的固态微波功率放大器，其包括新型功率分配器，用于来自分压器的输出的每个功率分数的固态功率放大器单元和用于功率分配器的放大输出的新型功率组合器。

    Edge-guided wave directional combiner
    64.
    发明授权
    Edge-guided wave directional combiner 失效
    边缘导向波方向组合器

    公开(公告)号：US3967218A

    公开(公告)日：1976-06-29

    申请号：US617210

    申请日：1975-09-26

    申请人： Joseph W. McGowan

    发明人： Joseph W. McGowan

    IPC分类号： H01P1/36 ,  H01P5/12 ,  H01P1/34

    CPC分类号： H01P5/12 ,  H01P1/362

    摘要： An edge-guided mode microstrip device having a pair of input ports and a mon output port, with two separate ferrite substrates each having a microstrip conductor electrically connected between a respective input port and the common output port. Both microstrip conductors additionally each have a conductive or inner edge spanned by a resistive film which acts as a resistive load. The other or outside conductive edge of each of the conductors includes an exponentially tapered segment which when a predetermined biasing magnetic field is applied transversely relative to the field of the substrates, causes input microwave energy at the two input ports to travel along the respective exponentially tapered edges and combine at the common output port. Any reflective energy returning from the output port will travel along the inner edges and be absorbed in the resistive load.

    摘要翻译： 具有一对输入端口和公共输出端口的边缘引导模式微带器件，具有两个单独的铁氧体衬底，每个铁氧体衬底具有电连接在相应的输入端口和公共输出端口之间的微带线导体。 两个微带线导体另外每个都具有由作为电阻负载的电阻膜跨越的导电或内边缘。 每个导体的另一个或外部导电边缘包括指数级渐缩的段，当相对于衬底的场横向施加预定的偏置磁场时，使两个输入端口处的输入微波能量沿着相应的指数级锥形 边缘并在公共输出端口组合。 从输出端口返回的任何反射能量将沿着内边缘移动并被吸收在电阻负载中。

    ISOLATOR AND IMPLEMENTATION METHOD THEREFOR
    67.
    发明公开
    ISOLATOR AND IMPLEMENTATION METHOD THEREFOR 审中-公开

    公开(公告)号：US20240283120A1

    公开(公告)日：2024-08-22

    申请号：US18569078

    申请日：2021-09-06

    申请人： ZHEJIANG DONGYANG DONGCI CHENGJI ELECTRONICS CO. , LTD.

    发明人： Fuhai XIAO ,  Xiaodan SUN

    IPC分类号： H01P1/36 ,  H01P11/00

    CPC分类号： H01P1/362 ,  H01P11/00

    摘要： An isolator includes a casing. An interior of the casing includes a positioning ring, a lower permanent magnet, a lower uniform magnetic sheet, a lower ferrite, a central conductor, an upper ferrite, a six-foot uniform magnetic sheet, an upper permanent magnet, a temperature compensation sheet and an upper uniform magnetic sheet in sequence from bottom to top. A cover plate is connected to the top of the casing. The central conductor comprises three central junctions forming an angle of 120 degrees with each other, and each having a longitudinal slit along a center line thereof, and first and second transverse slits respectively intersecting with the longitudinal slit, the second transverse slit being located outside of the first transverse slit. A method is disclosed for implementing the isolator, which increases internal magnetic field intensity, reduces third-order inter-modulation, and improves signal quality.