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    Power amplifier linearization using RF feedback
    2.
    发明授权
    Power amplifier linearization using RF feedback 有权
    功率放大器使用RF反馈线性化

    公开(公告)号：US07940120B2

    公开(公告)日：2011-05-10

    申请号：US12461847

    申请日：2009-08-26

    申请人： Andrei Grebennikov ,  Florian Pivit

    发明人： Andrei Grebennikov ,  Florian Pivit

    IPC分类号： H03F3/68

    CPC分类号： H03F1/345

    摘要： The power amplifier mainly includes a main amplifier, two splitters, one combiner, one subtracter, two phase shifters, one attenuator and one error amplifier. The splitters, subtracter and combiner are designed in the form of 90-degree or quadrature hybrid couplers. A quadrature hybrid can be implemented with any lumped or transmission-line elements and has an important advantage compared to the in-phase splitter that at equal values of reflection coefficients from loads connected to the in phase and 90° phase shift terminals, the reflection wave is lacking at the main input terminal and, consequently, the input voltage standing wave ratio of a quadrature hybrid does not depend on the equal load mismatch level.

    摘要翻译： 功率放大器主要包括一个主放大器，两个分离器，一个组合器，一个减法器，两个移相器，一个衰减器和一个误差放大器。 分离器，减法器和组合器是以90度或正交混合耦合器的形式设计的。 正交混合可以用任何集总或传输线元件实现，并且与同相分离器相比具有重要的优点，在同相和相移90°相移端子的反射系数相等的值，反射波 在主输入端子不足，因此正交混合的输入电压驻波比不依赖于相等的负载失配水平。

    Calibration of active antenna arrays for mobile telecommunications
    3.
    发明授权
    Calibration of active antenna arrays for mobile telecommunications 有权
    用于移动通信的有源天线阵列的校准

    公开(公告)号：US09590301B2

    公开(公告)日：2017-03-07

    申请号：US13635828

    申请日：2011-02-28

    申请人： Florian Pivit ,  Jan Hesselbarth

    发明人： Florian Pivit ,  Jan Hesselbarth

    IPC分类号： H01Q21/00 ,  H01Q3/26

    CPC分类号： H01Q3/267

    摘要： In order to calibrate in amplitude and phase the individual transceiver elements (4) of an active antenna array for a mobile telecommunications network, each transceiver element including a transmit and a receive path (8, 10) coupled to an antenna element (12), each transceiver element includes a comparator (100) for comparing phase and amplitude of transmitted or received signals with reference signals in order to adjust the characteristics of the antenna beam. In order to provide an accurate means of reference signal distribution, a feed arrangement distributes the reference signals and includes a waveguide (50) of a predetermined length which is terminated at one end (52) in order to set up a standing wave system along its length, and a plurality of coupling points (56) at predetermined points along the length of the waveguide, which are each coupled to a comparator of a respective transceiver element.

    摘要翻译： 为了在幅度和相位上校准用于移动电信网络的有源天线阵列的各个收发器元件（4），每个收发器元件包括耦合到天线元件（12）的发射和接收路径（8,10） 每个收发器元件包括比较器（100），用于将发射或接收信号的相位和幅度与参考信号进行比较，以便调整天线波束的特性。 为了提供准确的参考信号分配方式，馈送装置分配参考信号，并且包括预定长度的波导（50），其在一端（52）处终止，以便沿着其设置驻波系统 长度，以及沿着波导长度的预定点处的多个耦合点（56），每个耦合点分别耦合到相应的收发器元件的比较器。

    RADIO FREQUENCY TRANSMITTER
    5.
    发明申请
    RADIO FREQUENCY TRANSMITTER 审中-公开
    无线电频率发射机

    公开(公告)号：US20090122909A1

    公开(公告)日：2009-05-14

    申请号：US12268113

    申请日：2008-11-10

    申请人： Florian Pivit ,  Jan Hesselbarth ,  Georg Fischer ,  Suramate Chalermwisutkul

    发明人： Florian Pivit ,  Jan Hesselbarth ,  Georg Fischer ,  Suramate Chalermwisutkul

    IPC分类号： H04L27/00

    CPC分类号： H04L25/03828 ,  H03F3/2171 ,  H03F3/245 ,  H04L27/00

    摘要： The invention concerns a radio frequency transmitter (RFT) and a method of amplifying a radio frequency input signal (SIN) in the radio frequency transmitter (RFT). The radio frequency transmitter (RFT) comprises a digital signal generator (DSG) with a generation unit (GU) adapted to generate a pulsed bit stream signal and a switch mode power amplifier (SMPA) with a transistor circuit (PT) adapted to amplify the radio frequency input signal (SIN). The digital signal generator (DSG) further comprises a control unit (CU) adapted to detect in said pulsed bit stream signal a sequence of a constant signal height longer than a predefined threshold. The control unit (CU) is also adapted to initiate, upon detection of said sequence, a generation of a modified pulsed bit stream signal by an insertion of one or more notches in said sequence. Said notches interrupt said sequence by a signal of a signal height different from the signal height of the sequence. The radio frequency transmitter (RFT) further comprises connecting means (CM) adapted to provide said transistor circuit (PT) with said modified pulsed bit stream signal as the radio frequency input signal (SIN).

    摘要翻译： 本发明涉及射频发射机（RFT）和放大射频发射机（RFT）中射频输入信号（SIN）的方法。 射频发射机（RFT）包括具有适于产生脉冲比特流信号的生成单元（GU）的数字信号发生器（DSG）和具有适于放大所述脉冲位流信号的晶体管电路（PT）的开关模式功率放大器（SMPA） 射频输入信号（SIN）。 数字信号发生器（DSG）还包括适于在所述脉冲比特流信号中检测长于预定阈值的恒定信号高度的序列的控制单元（CU）。 控制单元（CU）还适于在检测到所述序列时通过在所述序列中插入一个或多个凹口来发起修改的脉冲比特流信号的产生。 所述缺口通过与序列的信号高度不同的信号高度的信号来中断所述序列。 射频发射机（RFT）还包括适于向所述晶体管电路（PT）提供所述修改的脉冲比特流信号作为射频输入信号（SIN）的连接装置（CM）。

    Aperture antenna element
    7.
    发明授权
    Aperture antenna element 有权
    孔径天线元件

    公开(公告)号：US07030825B1

    公开(公告)日：2006-04-18

    申请号：US10954033

    申请日：2004-09-29

    申请人： Georg Fischer ,  Florian Pivit

    发明人： Georg Fischer ,  Florian Pivit

    IPC分类号： H01Q13/10

    CPC分类号： H01Q13/10 ,  H01Q21/0075 ,  H01Q21/08

    摘要： A wide-bandwidth aperture antenna is constructed of two parallel metal plates 51, 52, each having a resonant aperture 53, 54. The apertured plates are arranged parallel to one another, with the apertures aligned. A third plate 57 is arranged parallel to the apertured plates to act as a reflector. The resonant apertures are in the form of squares with rounded corners. Feed stubs 55 and 56 are arranged between the apertured plates and project into the region between the apertures to excite orthogonally polarized modes. The feed stubs are in the form of strips which are aligned in planes perpendicular to the planes of the apertured plates. An exemplary embodiment has a bandwidth of 1700 MHz to 3300 MHz, containing the bands used for GSM 1800, UMTS, UMTS+, Bluetooth and WLAN systems. The feed is high-impedance and the decoupling better than −11 dB over the whole bandwidth.

    摘要翻译： 宽带隙天线由两个平行的金属板51,52构成，每个具有共振孔53,54。 多孔板彼此平行地布置，孔对准。 第三板57平行于多孔板布置以用作反射器。 谐振孔是具有圆角的正方形。 进料柱55和56布置在孔板之间并且突出到孔之间的区域中以激发正交极化模式。 进料柱是带状的形式，它们在与多孔板的平面垂直的平面中对准。 示例性实施例具有1700MHz至3300MHz的带宽，其包含用于GSM 1800，UMTS，UMTS +，蓝牙和WLAN系统的频带。 馈电是高阻抗，在整个带宽上的去耦优于-11 dB。

    Compact multiple-band antenna arrangement
    8.
    发明申请
    Compact multiple-band antenna arrangement 有权
    紧凑型多频带天线布置

    公开(公告)号：US20050068239A1

    公开(公告)日：2005-03-31

    申请号：US10677280

    申请日：2003-09-30

    申请人： Georg Fischer ,  Florian Pivit

    发明人： Georg Fischer ,  Florian Pivit

    IPC分类号： H01Q5/00 ,  H01Q5/42 ,  H01Q21/00 ,  H01Q21/06 ,  H01Q21/28 ,  H01Q13/10

    CPC分类号： H01Q21/28 ,  H01Q5/42 ,  H01Q21/0081 ,  H01Q21/064

    摘要： An antenna element is provided which responsive in multiple frequency bands, has symmetric beam patterns, and is easily and cheaply fabricated. The antenna element includes at least three conductive plates arranged in a stack At least one pair of adjacent plates contain apertures that are mutually aligned relative to the stacking direction. The antenna element further includes at least one air stripline arranged to create radiative electromagnetic excitations of the apertures when the stripline or striplines are energized by a suitable radiofrequency voltage source or sources.

    摘要翻译： 提供一种天线元件，其在多个频带中响应，具有对称的波束图案，并且容易且廉价地制造。 天线元件包括布置成堆叠的至少三个导电板。至少一对相邻的板包含相对于堆叠方向相互对准的孔。 天线元件还包括至少一个空气带状线，其布置成当带状线或带状线由合适的射频电压源或源通电时产生孔的辐射电磁激励。

    Active antenna arrays
    9.
    发明授权
    Active antenna arrays 有权
    有源天线阵列

    公开(公告)号：US09277590B2

    公开(公告)日：2016-03-01

    申请号：US13984361

    申请日：2012-01-26

    申请人： Titos Kokkinos ,  Florian Pivit

    发明人： Titos Kokkinos ,  Florian Pivit

    IPC分类号： H04W88/10 ,  H04B7/02 ,  H01Q1/24 ,  H01Q21/06 ,  H04B1/00 ,  H01Q5/50

    CPC分类号： H04W88/10 ,  H01Q1/246 ,  H01Q5/50 ,  H01Q21/06 ,  H04B1/0057

    摘要： In order to reduce the weight, cost and complexity of an active antenna array, designed for use with a plurality of different mobile telecommunications systems (multi-band system), the array comprises a plurality of antenna elements, which are divided into a plurality of antenna groups; a plurality of RF transceivers, which are divided into transceiver sets, wherein each transceiver of a set is arranged to operate on a different mobile telecommunications system, and including respective phase shifting and feeding networks coupled between each transceiver set and a respective antenna group, so that each transceiver of a set is coupled to each antenna element of the respective antenna group.

    摘要翻译： 为了减少设计用于多个不同的移动电信系统（多频带系统）的有源天线阵列的重量，成本和复杂性，阵列包括多个天线元件，其被分成多个 天线组; 多个RF收发器，其被分为收发器组，其中一组的每个收发器被布置成在不同的移动电信系统上操作，并且包括耦合在每个收发机组和相应的天线组之间的各自的相移和馈送网络，因此 一组的每个收发器耦合到相应天线组的每个天线元件。

    DETECTOR
    10.
    发明申请
    DETECTOR 审中-公开
    探测器

    公开(公告)号：US20130178232A1

    公开(公告)日：2013-07-11

    申请号：US13805722

    申请日：2011-06-16

    申请人： Holger Claussen ,  Florian Pivit ,  Irwin O. Kennedy ,  Francis J. Mullany

    发明人： Holger Claussen ,  Florian Pivit ,  Irwin O. Kennedy ,  Francis J. Mullany

    IPC分类号： H04W4/02

    CPC分类号： H04W4/025 ,  G06Q20/32 ,  H01Q1/2216 ,  H01Q3/00 ,  H04W4/00 ,  H04W4/80

    摘要： A user equipment identification detector for use in a wireless telecommunication network. The user equipment is operable to communicate with network nodes provided in the wireless telecommunication network. The detector comprises a proximity sensor and an interrogation unit. The proximity sensor is operable to detect placement of the user equipment within a predetermined detection region. The interrogation unit is operable to request an indication of identity from the user equipment detected in the predetermined detection region and communicate the indication of identity to a user equipment identification unit.

    摘要翻译： 一种用于无线电信网络的用户设备识别检测器。 用户设备可操作以与在无线电信网络中提供的网络节点进行通信。 检测器包括接近传感器和询问单元。 接近传感器可操作以检测用户设备在预定检测区域内的布置。 询问单元可操作以从在预定检测区域中检测到的用户设备请求身份的指示，并将身份指示传送给用户设备识别单元。