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    Circuit arrangement with radio-frequency mixer, and receiver arrangement with the circuit arrangement
    41.
    发明授权
    Circuit arrangement with radio-frequency mixer, and receiver arrangement with the circuit arrangement 有权
    具有射频混频器的电路布置，以及具有电路布置的接收器布置

    公开(公告)号：US08521118B2

    公开(公告)日：2013-08-27

    申请号：US12852445

    申请日：2010-08-06

    申请人： Axel Schmidt

    发明人： Axel Schmidt

    IPC分类号： H04B1/10

    CPC分类号： H04B1/18 ,  H04B1/26 ,  H04B1/406 ,  H04B15/00

    摘要： A circuit arrangement is disclosed with a radio-frequency mixer in which a plurality of preamplifiers in a receiver have a common output node. This node is connected to a common, broadband radio-frequency mixer via common coupling capacitances. Switching means can be used to connect and disconnect the preamplifiers, which can be associated with various frequency bands, independently of one another. The present principle can be applied in multiband receivers in mobile radio and allows integration using little chip area with good radio-frequency characteristics.

    摘要翻译： 公开了具有射频混频器的电路装置，其中接收器中的多个前置放大器具有公共输出节点。 该节点通过公共耦合电容连接到公共的宽带射频混频器。 开关装置可以用于彼此独立地连接和断开可与各种频带相关联的前置放大器。 本原理可以应用在移动无线电中的多频带接收机中，并且允许使用具有良好射频特性的小芯片区域的集成。

    WIRELESS AUDIO TRANSMISSION SYSTEM, PARTICULARLY A WIRELESS MICROPHONE SYSTEM
    43.
    发明申请
    WIRELESS AUDIO TRANSMISSION SYSTEM, PARTICULARLY A WIRELESS MICROPHONE SYSTEM 有权
    无线音频传输系统，特别是无线麦克风系统

    公开(公告)号：US20120224713A1

    公开(公告)日：2012-09-06

    申请号：US13498672

    申请日：2010-09-23

    申请人： Axel Schmidt ,  Gerrit Buhe ,  Andreas Wilzeck ,  Qipeng Cai ,  Maria Dolores Pérez-Guirao ,  Christoph König ,  Hanwen Cao

    发明人： Axel Schmidt ,  Gerrit Buhe ,  Andreas Wilzeck ,  Qipeng Cai ,  Maria Dolores Pérez-Guirao ,  Christoph König ,  Hanwen Cao

    IPC分类号： H04B3/00

    CPC分类号： H04B1/76 ,  H04R2420/07

    摘要： There is provided a wireless audio transmission system, in particular a wireless microphone system, for wireless audio transmission. The system has at least one wireless microphone unit for detecting audio signals and for wirelessly transmitting the detected audio signals, and a central unit. The central unit has a wireless receiving unit for receiving the wirelessly transmitted audio signals from The wireless microphone units, a pilot tone transmitting unit for transmitting a first pilot tone on a pilot channel, and a pilot tone receiving unit for receiving and processing a second pilot tone signal. The pilot tone signal has information in respect of the wireless transmission between the microphone units and the central unit.

    摘要翻译： 提供了一种用于无线音频传输的无线音频传输系统，特别是无线麦克风系统。 该系统具有用于检测音频信号和无线传输检测到的音频信号的至少一个无线麦克风单元和中央单元。 中央单元具有用于从无线麦克风单元接收无线发送的音频信号的无线接收单元，用于在导频信道上发送第一导频音的导频音发送单元和用于接收和处理第二导频的导频音接收单元 音调信号。 导频音信号具有关于麦克风单元与中央单元之间的无线传输的信息。

    PROBE SUPPORT AND PROCESS FOR THE EXAMINATION OF TEST SUBSTRATES UNDER USE OF PROBE SUPPORTS
    47.
    发明申请
    PROBE SUPPORT AND PROCESS FOR THE EXAMINATION OF TEST SUBSTRATES UNDER USE OF PROBE SUPPORTS 有权
    在使用探测支持下检测测试基板的探测支持和过程

    公开(公告)号：US20080116917A1

    公开(公告)日：2008-05-22

    申请号：US11940354

    申请日：2007-11-15

    申请人： Stojan Kanev ,  Hans-Jurgen Fleischer ,  Stefan Kreissig ,  Karsten Stoll ,  Axel Schmidt ,  Andreas Kittlaus

    发明人： Stojan Kanev ,  Hans-Jurgen Fleischer ,  Stefan Kreissig ,  Karsten Stoll ,  Axel Schmidt ,  Andreas Kittlaus

    IPC分类号： G01R31/02

    CPC分类号： G01R31/2889 ,  G01R1/07342

    摘要： A probe support for holding probes which serve for electrical contacting of test substrates in a prober for testing purposes is specified. A process for testing test substrates in such a prober is also specified. The probe support comprises a probe card holder, a probe card, and a probe card adapter, where the probe card and probe card adapter are electrically connected to one another as well as to a shield of electrically conductive material and are disposed in such a manner that the probe card lies in a passageway of a shield. The shield is disposed between the test substrates and the probe card holder and is electrically insulated from it. For testing test substrates their positioning with respect to the probes held in this manner is done by angular alignment of the contact surfaces of the test substrates to the sensor tips and the movement of the test substrates along a path which starts from a first reference position and is composed up to the first, and each additional, contact position of an x-component and a y-component (FIG. 2).

    摘要翻译： 规定了用于保持探头的探针支架，用于检测探针中的测试基板的电接触用于测试目的。 还规定了用于在这种探测器中测试测试底物的方法。 探针支架包括探针卡夹，探针卡和探针卡适配器，其中探针卡和探针卡适配器彼此电连接以及导电材料的屏蔽，并以这种方式设置 探针卡位于屏蔽的通道中。 屏蔽件设置在测试基板和探针卡保持器之间并且与其电绝缘。 为了测试测试基板，它们相对于以这种方式保持的探针的定位是通过将测试基板的接触表面与传感器尖端角度对准并沿着从第一参考位置开始的路径移动测试基板来进行的， 由x分量和y分量（图2）组成直到第一个和每个附加的接触位置。

    Test apparatus for testing substrates at low temperatures
    50.
    发明授权
    Test apparatus for testing substrates at low temperatures 有权
    用于在低温下测试基板的测试装置

    公开(公告)号：US07046025B2

    公开(公告)日：2006-05-16

    申请号：US10677178

    申请日：2003-10-02

    申请人： Stefan Schneidewind ,  Claus Dietrich ,  Jorg Kiesewetter ,  Frank-Michael Werner ,  Axel Schmidt ,  Matthias Zieger

    发明人： Stefan Schneidewind ,  Claus Dietrich ,  Jorg Kiesewetter ,  Frank-Michael Werner ,  Axel Schmidt ,  Matthias Zieger

    IPC分类号： G01R31/02

    CPC分类号： G01R31/2865 ,  G01R31/2806 ,  G01R31/2831 ,  G01R31/2887

    摘要： A test apparatuss for testing substrates at low temperatures has a chuck, which can be displaced in the working area by means of a chuck drive, the temperature of which can be controlled using heating and cooling means. The chuck has a receiving surface for receiving a test substrate and holding means for fixing a substrate carrier which receives the test substrate. Spatially and thermally defined test conditions are maintained with minimal energy and labor costs both at room temperatures and at low temperatures. This is achieved by providing a vacuum chamber which surrounds the working area of the chuck. The chuck is on one side thermally decoupled from the uncooled chuck drive and on the other side is thermally connected in a releasable manner to the test substrate. The cooled chuck and the cooled test substrate are shielded from the thermal radiation of the surrounding uncooled assemblies by means of a directly cooled thermal radiation shield.

    摘要翻译： 用于在低温下测试基板的测试装置具有卡盘，该卡盘可以通过卡盘驱动器在工作区域中移动，卡盘驱动器的温度可以使用加热和冷却装置来控制。 卡盘具有用于接收测试基板的接收表面和用于固定接收测试基板的基板载体的保持装置。 空间和热定义的测试条件在室温和低温下以最小的能量和劳动成本维持。 这通过提供围绕卡盘的工作区域的真空室来实现。 卡盘在一侧与非冷却的卡盘驱动器热分离，另一侧以可释放的方式热连接到测试基板。 通过直接冷却的热辐射屏蔽将冷却的卡盘和冷却的测试基板与周围的未冷却组件的热辐射隔离。