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    VARIABLE POWER DIVIDER
    1.
    发明公开
    VARIABLE POWER DIVIDER 审中-公开
    VARIABLER LEISTUNGSTEILER

    公开(公告)号：EP1568097A4

    公开(公告)日：2006-08-23

    申请号：EP02780602

    申请日：2002-11-08

    申请人： EMS TECHNOLOGIES INC

    发明人： RUNYON DONALD L

    IPC分类号： H01P1/18 ,  H01P5/04 ,  H01P5/18 ,  H01P5/22 ,  H03H7/18

    CPC分类号： H01P5/04

    摘要： A variable power divider and method can vary the RF power between ports in a high power and multi-carrier RF environment, such as is used in controlling signals sent and received in a base station antenna. The variable power divider can include a single-control phase shifter (110) and a hybrid power divider (115). The single-control phase shifter can comprise a three-port device having a single input port and two output ports. The single-control phase shifter can further comprise a variable adjuster that can change or adjust the phase between two RF signals. The hybrid power divider can comprise a four-port device having two input ports and two output ports. Both the single-control phase shifter and the hybrid power divider can comprise substantially planar structures that are suitable for high-speed manufacturing. The output ports of the hybrid power divider can be coupled to various devices such antennas or power absorbing elements.

    摘要翻译： 可变功率分配器和方法可以改变高功率和多载波RF环境中的端口之间的RF功率，例如用于控制在基站天线中发送和接收的信号。 可变功率分配器可以包括单控制移相器和混合功率分配器。 单控制移相器可以包括具有单个输入端口和两个输出端口的三端口设备。 单控制移相器还可以包括可改变或调整两个RF信号之间的相位的可变调节器。 混合功率分配器可以包括具有两个输入端口和两个输出端口的四端口设备。 单控制移相器和混合功率分配器都可以包括适合于高速制造的基本上平面的结构。 混合功率分配器的输出端口可以耦合到各种设备，例如天线或功率吸收元件。

    VERTICAL ELECTRICAL DOWNTILT ANTENNA
    5.
    发明公开
    VERTICAL ELECTRICAL DOWNTILT ANTENNA 审中-公开
    垂直电下倾角天线

    公开(公告)号：EP1649545A4

    公开(公告)日：2007-09-05

    申请号：EP04778536

    申请日：2004-07-16

    申请人： EMS TECHNOLOGIES INC

    发明人： RUNYON DONALD L ,  CARSON JAMES C ,  JANOSCHKA DARIN M

    IPC分类号： H01Q3/26 ,  H01Q1/24 ,  H01Q3/22 ,  H01Q3/40

    CPC分类号： H01Q1/246 ,  H01Q3/26 ,  H01Q3/40

    摘要： A dual-polarization wireless base station antenna that implements vertical electrical downtilt and sidelobe reduction using beam steering circuit that includes a variable power divider and a multi-beam beam forming network. The variable power divider includes a single adjustable control element to divide an input voltage signal into a pair of complimentary amplitude voltage drive signals that exhibit matched phase and constant phase delay through the variable power divider. The beam forming network is configured as a double-sided, edge-connected microstrip module mounted to a main panel, which support the antenna elements in a vertical column organized into sub-arrays in a manner that implements sidelobe reduction. The power distribution network connecting the beam steering network to the antenna elements implements beam tilt bias and sidelobe reduction through coordinated phase shifting implemented through transmission media trace length adjustment.

    CELLULAR SIGNAL ENHANCER
    7.
    发明公开
    CELLULAR SIGNAL ENHANCER 有权
    ZELLSIGNALVERSTÄRKER

    公开(公告)号：EP1597839A4

    公开(公告)日：2006-09-13

    申请号：EP03716225

    申请日：2003-02-26

    申请人： EMS TECHNOLOGIES INC

    发明人： MCKAY DAVID L ,  RUNYON DONALD L ,  MCNEILL DONALD JOSEPH ,  THOMPSON STEPHEN BRETT ,  MAXWELL JAMES WILLIAM

    IPC分类号： H04B7/155 ,  H04B7/26 ,  H04L12/56 ,  H04W16/26 ,  H04B7/15

    CPC分类号： H04B7/15535 ,  H04B7/15507 ,  H04B7/1555

    摘要： A low-cost user portable signal enhancer unit for extending service coverage of wireless communications to a user in a desired area of limited coverage. The enhancement supports an increase of signal power levels to allow wireless communication usage in a location, such as a small office or home office environment where the original cellular signals are weak or unreliable. A base station signal is enhanced by a bi-directional amplifier device (BDA), which receives a base station signal, amplifies the signal power and retransmits the amplified signal in a first signal path to a user in close proximity. The bi-directional amplifier also receives a user signal, amplifies the signal power and retransmits the amplified signal to the base station in a second separate signal path. Dual polarized antennas can receive and transmit the respective signals at opposite polarizations to increase isolation of the signals.