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    • 14. 发明授权
    • Method and apparatus for collisional activation of polypeptide ions
    • 多肽离子碰撞激活的方法和装置
    • US07829851B2
    • 2010-11-09
    • US11998266
    • 2007-11-29
    • Scott A. McLuckeyHongling HanYu Xia
    • Scott A. McLuckeyHongling HanYu Xia
    • H01J1/42
    • H01J49/4225H01J49/0072
    • A method and apparatus for identification of activating ions by collisions is described. The method uses a plurality of linear ion taps and a plurality of sources of ions and a mass measuring device. A first source is operated to dispense first ions into first trap, where the ions may be kinetically cooled. A second source is operated to dispense second ions into the first trap, where the first and the second ions are stored. Ions in the first trap are ejected so as to enter a second trap, where the ions are stored prior to mass spectrometry. The apparatus may use quadrupole rods to form the ion traps, and the voltage and pressure differences between the first and second traps are controllable values.
    • 描述了通过碰撞识别激活离子的方法和装置。 该方法使用多个线性离子抽头和多个离子源和质量测量装置。 操作第一来源将第一离子分配到第一捕集器中,其中离子可以被动力学冷却。 操作第二源以将第二离子分配到第一阱中,其中存储第一和第二离子。 第一个陷阱中的离子被排出,以便进入第二个陷阱,其中离子在质谱之前被储存。 该装置可以使用四极杆形成离子阱,并且第一和第二陷阱之间的电压和压力差是可控的值。
    • 15. 发明授权
    • Adaptive antenna array subsystem calibration
    • 自适应天线阵列子系统校准
    • US06157340A
    • 2000-12-05
    • US179047
    • 1998-10-26
    • Guanghan XuXinguang XuFuqi MuDaniel WeeYu Xia
    • Guanghan XuXinguang XuFuqi MuDaniel WeeYu Xia
    • H01Q3/26H04B7/06H04B7/08H04B17/00G01S7/40
    • H04B7/086H01Q3/2605H01Q3/267H04B17/12H04B7/0615H04B7/0617
    • A communication system having an adaptive antenna array subsystem generates calibration information for the adaptive array subsystem by measuring the amplitude and phase of modulated signals within the subsystem at the antenna array mount and at the back plane mount for the transmit and receive array. The calibration information is used to more accurately perform beamforming for both received an transmitted information signals. The communication system uses a time diversity duplex (TDD) synchronous code division multiple access (SCDMA) protocol for wireless communication between remote terminals and a base station. The calibration means uses a combination combiner and splitter having matched micro strip lines incorporated into a printed circuit board in either the antenna array mount or the back plane.
    • 具有自适应天线阵列子系统的通信系统通过测量在天线阵列安装座处的子系统内以及用于发射和接收阵列的背面安装座处的调制信号的幅度和相位来产生用于自适应阵列子系统的校准信息。 校准信息用于更准确地对接收到的所发送的信息信号进行波束成形。 通信系统使用时间分集双工(TDD)同步码分多址(SCDMA)协议,用于远程终端与基站之间的无线通信。 校准装置使用组合组合器和分离器,其具有并入到天线阵列安装件或背板中的印刷电路板中的匹配的微带线。
    • 16. 发明申请
    • TANDEM MASS SPECTROMETRY USING COMPOSITE WAVEFORMS
    • 使用复合波形的TANDEM MASS SPECTROMETRY
    • US20130299693A1
    • 2013-11-14
    • US13877580
    • 2011-10-13
    • Yu XiaFrank A. Londry
    • Yu XiaFrank A. Londry
    • H01J49/00
    • H01J49/004H01J49/0031H01J49/0063H01J49/428
    • A tandem mass spectrometer system and method are described, where a composite voltage waveform is applied to so as to trap ion having selected m/z. The trapped ions may be subject to collision induced ionization dissociation (CID) by a selectable discrete frequency voltage waveform positioned so as to be in a notch in a broadband waveform. The resultant ion products may be trapped using a second notch having a center frequency corresponding to the ion product to be trapped. The process may be repeated so as to increase the amount of ions produced, or the process a first resultant ion product to yield a second resultant in product, which may be trapped.
    • 描述了串联质谱仪系统和方法,其中施加复合电压波形以捕获具有选定m / z的离子。 被捕获的离子可能通过可选的离散频率电压波形进行碰撞感应电离解离(CID),该波形定位成宽带波形中的陷波。 可以使用具有对应于待捕获的离子产物的中心频率的第二缺口来捕获所得的离子产物。 可以重复该过程,以便增加产生的离子的量,或者加工第一合成的离子产物以产生可能被捕获的第二产物。