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    Coupled-line rat-race coupler with smooth in-phase and out-of-phase performances
    14.
    发明授权
    Coupled-line rat-race coupler with smooth in-phase and out-of-phase performances 有权

    公开(公告)号：US11901603B2

    公开(公告)日：2024-02-13

    申请号：US17347532

    申请日：2021-06-14

    申请人： BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS

    发明人： Yongle Wu ,  Yiwen Wei ,  Weimin Wang ,  Yuhao Yang ,  Yifan Zhang

    IPC分类号： H01P5/18 ,  H01P5/22

    CPC分类号： H01P5/184 ,  H01P5/185 ,  H01P5/222

    摘要： A coupled-line rat-race coupler includes four ports and four coupled-lines each composed of two metal lines. Two of the ports are respectively connected with the front ends of the two lines of the first coupled-line, and the other two ports are respectively connected with the front ends of the two lines of the second coupled-line. The two lines of the third coupled-line are short circuited and respectively connected with the back end of one line of the first coupled-line on one side and with the back end of one line of the second coupled-line on the other side. In the fourth coupled-line, one line is open at one end and short circuited at the other end with the other line, which is connected with one line of the first coupled-line and one line of the second coupled-line. The coupled-line rat-race coupler is characterized with smooth and stable output phase.

    Polarization-diverse antennas and systems
    18.
    发明授权
    Polarization-diverse antennas and systems 有权
    极化多样的天线和系统

    公开(公告)号：US09496914B2

    公开(公告)日：2016-11-15

    申请号：US13979143

    申请日：2012-01-13

    申请人： Christophe Caloz ,  Samer Abielmona ,  Van-Hoang Nguyen ,  Ning Yang

    发明人： Christophe Caloz ,  Samer Abielmona ,  Van-Hoang Nguyen ,  Ning Yang

    IPC分类号： H04B1/58 ,  H01Q15/22 ,  H01Q1/38 ,  H01Q15/24 ,  H01Q13/20 ,  H01Q1/50 ,  H01Q21/24 ,  H01P5/22 ,  H01Q15/00

    CPC分类号： H04B1/58 ,  H01P5/222 ,  H01Q1/38 ,  H01Q1/50 ,  H01Q13/20 ,  H01Q13/206 ,  H01Q15/0086 ,  H01Q15/24 ,  H01Q21/24 ,  H01Q25/001

    摘要： Antenna units, antenna systems and polarizing systems provide polarization diversity to leaky-wave antennas. An antenna unit comprises a rat-race coupler having a summation port, a difference port and two output ports. Each one of a pair of composite right/left-handed (CRLH) leaky-wave antennas (LWA) is connected at one end to a respective one of the output ports of the rat-race coupler. An inductive stub is implemented between the CRLH LWAs for connecting the CRLH LWAs to a grounded via. Various polarizations are obtained by injecting a radio-frequency (RF) signal in the summation or difference port of the rat-race coupler, or in both ports. System variants include various devices and assemblies for injecting RF signals in the antenna unit. One such variant includes a polarizing system having a switched matrix for directing a signal according to various intended polarizations.

    摘要翻译： 天线单元，天线系统和偏振系统为泄漏波天线提供极化分集。 天线单元包括具有总和端口，差分端口和两个输出端口的大鼠电路耦合器。 一对复合右/左手（CRLH）泄漏波天线（LWA）中的每一个在一端连接到大鼠赛道耦合器的输出端口的相应一个。 在CRLH LWAs之间实现了将CRLH LWAs连接到接地通道的电感短路。 通过在大鼠赛跑耦合器的加和或差分端口中或两个端口中注射射频（RF）信号来获得各种极化。 系统变体包括用于在天线单元中注入RF信号的各种设备和组件。 一种这样的变型包括具有用于根据各种预期极​​化来引导信号的开关矩阵的偏振系统。

    HOLOGRAPHIC MODE CONVERSION FOR TRANSMISSION LINES
    19.
    发明申请
    HOLOGRAPHIC MODE CONVERSION FOR TRANSMISSION LINES 有权
    传输线的全息模式转换

    公开(公告)号：US20160327745A1

    公开(公告)日：2016-11-10

    申请号：US14708043

    申请日：2015-05-08

    申请人： Elwha LLC

    发明人： Tom Driscoll ,  John Desmond Hunt ,  Nathan Ingle Landy ,  David R. Smith ,  Yaroslav A. Urzhumov

    IPC分类号： G02B6/28 ,  G02B27/28 ,  G02B1/00 ,  G02B5/32

    CPC分类号： H01P1/16 ,  G02B1/002 ,  G02B5/32 ,  G02B6/00 ,  G02B6/2848 ,  G02B27/286 ,  G03H1/0005 ,  G03H1/0808 ,  H01P5/022 ,  H01P5/19 ,  H01P5/20 ,  H01P5/222 ,  H01Q1/42 ,  H01Q13/02 ,  H01Q13/06 ,  H01Q15/02 ,  H01Q19/062 ,  H01Q19/067

    摘要： The present disclosure provides systems and methods associated with mode conversion for electromagnetic field modification. A mode converting structure (holographic metamaterial) is formed with a distribution of dielectric constants chosen to convert an electromagnetic radiation pattern from a first mode to a second mode to attain a target electromagnetic radiation pattern that is different from the input electromagnetic radiation pattern. A solution to a holographic equation provides a sufficiently accurate approximation of a distribution of dielectric constants that can be used to form a mode converting device for use with one or more transmission lines, such as waveguides. One or more optimization algorithms can be used to improve the efficiency of the mode conversion.

    摘要翻译： 本公开提供了与用于电磁场修改的模式转换相关联的系统和方法。 模式转换结构（全息超材料）形成为具有选择的介电常数分布，以将电磁辐射图从第一模式转换为第二模式，以获得不同于输入电磁辐射图的目标电磁辐射图。 全息方程式的解决方案提供了可用于形成用于一个或多个传输线（例如波导）的模式转换装置的介电常数分布的足够精确的近似。 可以使用一种或多种优化算法来提高模式转换的效率。

    Dual polarization antenna with high port isolation
    20.
    发明授权
    Dual polarization antenna with high port isolation 有权
    双极化天线，具有高端口隔离

    公开(公告)号：US08830131B1

    公开(公告)日：2014-09-09

    申请号：US12707361

    申请日：2010-02-17

    申请人： Jonathan P. Doane ,  Mark M. Mulbrook ,  Brian J. Herting

    发明人： Jonathan P. Doane ,  Mark M. Mulbrook ,  Brian J. Herting

    IPC分类号： H01Q1/00

    CPC分类号： H01Q21/24 ,  H01P5/222 ,  H01Q7/00 ,  H01Q9/16 ,  H01Q9/44

    摘要： The present invention is an integrated antenna assembly which allows for integration of a first radio system and a second radio system with the integrated antenna assembly. The integrated antenna assembly may include a coupler for providing sufficient isolation between the first radio system (ex.—a vertical polarization system) and the second radio system (ex.—a horizontal polarization system). The integrated antenna assembly may further include a common mode choke connected between a first antenna element and a second antenna element of the integrated antenna assembly. The coupler may produce a common mode based on signals received from the vertical polarization system and may also produce a differential mode based on signals received from the horizontal polarization system. The common mode choke may be configured for: preventing transmission of common mode currents from the first antenna element to the second antenna element; and being transparent to differential mode current flow.

    摘要翻译： 本发明是集成天线组件，其允许将第一无线电系统和第二无线电系统与集成天线组件集成。 集成天线组件可以包括耦合器，用于在第一无线电系统（例如垂直极化系统）和第二无线电系统（例如水平极化系统）之间提供足够的隔离。 集成天线组件还可以包括连接在集成天线组件的第一天线元件和第二天线元件之间的共模扼流圈。 耦合器可以基于从垂直极化系统接收的信号产生共模，并且还可以基于从水平极化系统接收的信号产生差分模式。 共模扼流圈可以被配置为：防止共模电流从第一天线元件传输到第二天线元件; 并且对差模电流是透明的。