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    Amplifier with input and output impedance match
    26.
    发明授权
    Amplifier with input and output impedance match 失效
    输入和输出阻抗匹配的放大器

    公开(公告)号：US3911372A

    公开(公告)日：1975-10-07

    申请号：US20480471

    申请日：1971-12-06

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： SEIDEL HAROLD

    IPC: H01P1/213 ,  H03F1/32 ,  H03F1/38 ,  H03F1/56 ,  H03F3/68 ,  H03H11/36 ,  H04B3/00 ,  H04B3/36 ,  H03F3/60

    CPC classification number: H01P1/213 ,  H03F1/3223 ,  H03F1/38 ,  H03F1/565 ,  H03F3/211 ,  H03F3/68 ,  H03F2200/198 ,  H03F2200/537 ,  H03H11/36 ,  H04B3/00 ,  H04B3/36

    Abstract: This application discloses a class of amplifiers employing dual active elements connected between a pair of hybrid couplers. It is shown that, in one particularly useful special case, this basic circuit can be simplified, and the hybrid couplers replaced by simple 1:1 turns ratio transformers. It is an advantage of this class of amplifier that it can be matched to any arbitrary impedance at both its input and output ports while preserving all the preferred characteristics of the active elements.

    Abstract translation: 本申请公开了一类使用双重有源元件连接在一对混合耦合器之间的放大器。 可以看出，在一个特别有用的特殊情况下，可以简化该基本电路，并用简单的1：1匝比变压器代替混合耦合器。 这种放大器的优点在于它可以与其输入和输出端口上的任何任意阻抗匹配，同时保留有源元件的所有优选特性。

    Tandem arrays of in-phase couplers
    28.
    发明授权
    Tandem arrays of in-phase couplers 失效
    同相耦合器串联阵列

    公开(公告)号：US3883827A

    公开(公告)日：1975-05-13

    申请号：US46621374

    申请日：1974-05-02

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： SEIDEL HAROLD

    IPC: H03H7/46 ,  H03H7/48 ,  H01P5/04

    CPC classification number: H03H7/46 ,  H03H7/48

    Abstract: In theory, one can design an in-phase hybrid coupler having any arbitrary signal division ratio k/t as a function of frequency. The resulting network, as disclosed in the prior art, comprises a pair of frequency insensitive 3db hybrid couplers interconnected by means of two identical, reverse-connected antimetric networks. The problem, however, is that parasitics often make it difficult, if not impossible, to realize the required antimetric networks at the higher operating frequencies. This application discloses that any in-phase hybrid coupler can be synthesized as a tandem array of a plurality of in-phase hybrid couplers where each frequencysensitive coupler circuit in the array contains a preselected simplified antimetric network that is more readily realizable over the frequency band of interest. In particular, the simplified network can be designed to incorporate component parasitics into the network itself, thus further extending the useful operating range.

    Abstract translation: 在理论上，可以设计具有作为频率的函数的任意信号分频比k / t的同相混合耦合器。 如现有技术中所公开的，所得到的网络包括通过两个相同的反向连接的反量测网络互连的一对频率不灵敏的3db混合耦合器。 然而，问题在于，寄生效应通常使得在更高的工作频率下实现所需的反比较网络变得困难，甚至是不可能的。 该申请公开了任何同相混合耦合器可以被合成为多个同相混合耦合器的串联阵列，其中阵列中的每个频率敏感耦合器电路包含预先选择的简化反比较网络，其在频率上更容易实现 感兴趣的乐队。 特别地，简化网络可以被设计成将组件寄生效应结合到网络本身中，从而进一步扩展有用的操作范围。

    Matched phase shifter
    29.
    发明授权
    Matched phase shifter 失效
    匹配移相器

    公开(公告)号：US3879689A

    公开(公告)日：1975-04-22

    申请号：US48189174

    申请日：1974-06-21

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： SEIDEL HAROLD

    IPC: H03H7/18 ,  H03H7/38 ,  H03H7/32

    CPC classification number: H03H7/38 ,  H03H7/18

    Abstract: An impedance matched phase shifter is realized by the use of dual reactances. In one embodiment one of the reactances is connected in parallel with the series-aiding connected windings of 1:1 turns ratio transformer. The second reactance is connected between the common junction of the two transformer windings and ground. In a second embodiment, a phase shifter employing a three-winding transformer is disclosed for coupling between circuits having different impedance levels.

    Abstract translation: 阻抗匹配移相器通过使用双电抗实现。 在一个实施例中，其中一个电抗与1：1匝比变压器的串联辅助绕组并联连接。 第二个电抗连接在两个变压器绕组的公共端和地之间。 在第二实施例中，公开了采用三绕组变压器的移相器用于耦合具有不同阻抗水平的电路。

    Transformer hybrid coupler having arbitrary power division ratio
    30.
    发明授权
    Transformer hybrid coupler having arbitrary power division ratio 失效
    具有仲裁功率部分的变压器混合耦合器

    公开(公告)号：US3576505A

    公开(公告)日：1971-04-27

    申请号：US3576505D

    申请日：1969-10-27

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： SEIDEL HAROLD

    IPC: H02J3/38 ,  H03H7/48 ,  H01P5/12

    CPC classification number: H02J3/38 ,  H03H7/48 ,  Y10T307/297

    Abstract: This application describes a transformer hybrid coupler in which the power division ratio can have essentially any arbitrary value. The coupler comprises two quadrifilar coils, each one of which includes two, tightly coupled N:1 transformers. The coils are series connected such that one end of each of the primary windings of one coil is coupled to one end of a different one of the secondary windings of the other coil in a manner such that the network representation of the resulting four-port with respect to the symmetric mode of excitation is the dual of the network representation with respect to the antisymmetric mode of excitation. The other ends of the windings of either one of the coils constitute the four coupler ports, while the other ends of the windings of the other coil are connected to a common junction, typically ground.

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