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    • 1. 发明申请
    • TERAHERTZ DISPERSIVE SPECTROMETER SYSTEM
    • TERAHERTZ分散光谱仪系统
    • US20120199743A1
    • 2012-08-09
    • US13367209
    • 2012-02-06
    • James A. CoxBernard S. FritzFouad Nusseibeh
    • James A. CoxBernard S. FritzFouad Nusseibeh
    • G01J3/42G01J3/443
    • G01J3/42G01J5/0837G01N21/3563G01N21/3577G01N21/3581
    • A spectrometer system for providing information about a target with terahertz radiation. The system may receive incident radiation from the target through fore optics, a slit aperture, secondary optics and a dispersive element which images a slit on an array of terahertz sensitive detectors. The detectors may include uncooled sensors. Each sensor may be connected to its own micro antenna. The array of detectors may be situated proximate to the dispersive element so that radiation from the element may be dispersed according to wavelength to the respective detectors optimally sensitive to the various respective wavelengths. Detector signals indicating the impingement of terahertz radiation may provide information for identifying a material of the target.
    • 用于提供有关太赫兹辐射的目标信息的光谱仪系统。 该系统可以通过前光学器件,狭缝孔,次光学器件和对在太赫兹敏感探测器阵列上的狭缝进行成像的色散元件来接收来自靶的入射辐射。 检测器可以包括非制冷传感器。 每个传感器可以连接到其自己的微天线。 检测器阵列可以位于分散元件附近,使得来自元件的辐射可以根据波长分散到对各种相应波长最佳敏感的各个检测器。 指示太赫兹辐射冲击的检测器信号可以提供用于识别目标材料的信息。
    • 3. 发明申请
    • TERAHERTZ DISPERSIVE SPECTROMETER SYSTEM
    • TERAHERTZ分散光谱仪系统
    • US20090114822A1
    • 2009-05-07
    • US11935917
    • 2007-11-06
    • James A. CoxBernard S. FritzFouad Nusseibeh
    • James A. CoxBernard S. FritzFouad Nusseibeh
    • G01J5/02
    • G01J3/42G01J5/0837G01N21/3581
    • A spectrometer system for providing information about a target with terahertz radiation. The system may receive incident radiation from the target through fore optics, a slit aperture, secondary optics and a dispersive element which images a slit on an array of terahertz sensitive detectors. The detectors may include uncooled sensors. Each sensor may be connected to its own micro antenna. The array of detectors may be situated proximate to the dispersive element so that radiation from the element may be dispersed according to wavelength to the respective detectors optimally sensitive to the various respective wavelengths. Detector signals indicating the impingement of terahertz radiation may provide information for identifying a material of the target.
    • 用于提供有关太赫兹辐射的目标信息的光谱仪系统。 系统可以通过前光学元件,狭缝孔,次光学器件和对在太赫兹敏感检测器阵列上的狭缝进行成像的色散元件来接收来自靶的入射辐射。 检测器可以包括非制冷传感器。 每个传感器可以连接到其自己的微天线。 检测器阵列可以位于分散元件附近,使得来自元件的辐射可以根据波长分散到对各种相应波长最佳敏感的各个检测器。 指示太赫兹辐射的冲击的检测器信号可以提供用于识别目标材料的信息。
    • 4. 发明授权
    • Apparatus and method for ranging of a wireless transceiver with a switching antenna
    • 一种无线收发器与开关天线的测距装置和方法
    • US07884753B2
    • 2011-02-08
    • US12025158
    • 2008-02-04
    • Andy PeczalskiFouad Nusseibeh
    • Andy PeczalskiFouad Nusseibeh
    • G01S13/75
    • H04Q9/00
    • A sensor includes a transceiver configured to receive a wireless signal from an interrogator and to reflect the wireless signal back. The sensor also includes an antenna-switching modulator configured to modulate a radar cross-section of the sensor by repeatedly switching an antenna between, for example, a short-circuit position and an operational circuit position. The operational circuit position could be associated with an impedance matched receiver, and the short-circuit position could be associated with ground. Also, the sensor could be further configured to transmit the wireless signal to a second sensor and to receive a reflected wireless signal from the second sensor, and the sensor could further include a phase comparator configured to compute a phase difference between the transmitted wireless signal and the reflected wireless signal. The phase comparator could be further configured to compute a distance between the sensor and the second sensor based on the phase difference.
    • 传感器包括收发器,其被配置为从询问器接收无线信号并反射无线信号。 传感器还包括天线切换调制器,其被配置为通过在诸如短路位置和操作电路位置之间重复地切换天线来调制传感器的雷达横截面。 操作电路位置可以与阻抗匹配的接收器相关联,并且短路位置可以与地相关联。 此外,传感器还可以被配置为将无线信号传输到第二传感器并且从第二传感器接收反射的无线信号,并且传感器还可以包括相位比较器,其被配置为计算所发射的无线信号和 反射的无线信号。 相位比较器可以被进一步配置为基于相位差来计算传感器和第二传感器之间的距离。
    • 5. 发明授权
    • Micro discharge device ionizer and method of fabricating the same
    • 微型放电器件离子发生器及其制造方法
    • US07910896B2
    • 2011-03-22
    • US12179969
    • 2008-07-25
    • Terry M. MartaFouad NusseibehAdam Dewey McBradyMichael Rhodes
    • Terry M. MartaFouad NusseibehAdam Dewey McBradyMichael Rhodes
    • H01J27/02
    • H01J27/16
    • A micro discharge device (MDD) ionizer and a method for fabricating the MDD ionizer are disclosed. The MDD ionizer includes a dielectric barrier having a first open end connected to an electrically conductive capillary tube and a second open end connected to a sample collection capillary tube. A circular high voltage electrode can be positioned around the dielectric barrier in close linear proximity to the conductive capillary tube and sealed by a non-conductive epoxy. A plasma discharge can be formed in a flow path through the dielectric barrier when an AC potential is applied between the high voltage electrode and the electrically conductive capillary tube utilizing an electronic controller. Such a plasma discharge in the flow path of the sample achieves soft ionization of gaseous sample molecules. The high pressure region generally occurs in the plasma region (where the ionization occurs). The ions thus are drawn (i.e., pushed or pulled) toward the high vacuum region located downstream where the detector(s) can be located.
    • 公开了一种微型放电装置(MDD)电离器及其制造方法。 MDD电离器包括电介质阻挡层,其具有连接到导电毛细管的第一开口端和连接到样品收集毛细管的第二开口端。 可以将环形高压电极定位在电介质阻挡层周围,紧密接近导电毛细管并被非导电环氧树脂密封。 当使用电子控制器在高压电极和导电毛细管之间施加AC电位时,可以在通过电介质阻挡层的流动路径中形成等离子体放电。 在样品的流动路径中的这种等离子体放电实现了气态样品分子的软电离。 高压区域通常发生在等离子体区域(其中发生电离)。 离子因此被拉向(即被推或拉)到位于检测器可位于下游的高真空区域。
    • 9. 发明授权
    • Multiple wavelength cavity ring down gas sensor
    • 多波长腔环形气体传感器
    • US08437000B2
    • 2013-05-07
    • US12825985
    • 2010-06-29
    • Barrett E. ColeTerry MartaJames Allen CoxFouad Nusseibeh
    • Barrett E. ColeTerry MartaJames Allen CoxFouad Nusseibeh
    • G01N21/00
    • G01N21/031G01N21/3151G01N21/3504G01N21/39
    • An illustrative cavity ring down gas sensor includes an optical cavity for receiving a gas to be detected and at least two electromagnetic radiation sources. The first electromagnetic radiation source may emit a first beam of light having a wavelength corresponding to an absorption wavelength of the gas to be detected, and the second electromagnetic radiation source may emit a second beam of light having a second wavelength that is off of an absorption wavelength of the gas to be detected. The first beam of light may detect a cavity ring down time decay, which is related to the concentration of the gas to be detected. The second beam of light may be used to detect a baseline cavity ring down time decay, which may be used to help increase the accuracy of the sensor by, for example, helping to compensate the concentration of the gas detected by the first beam of light for sensor variations caused by, for example, sensor age, temperature or pressure changes, and/or other conditions.
    • 示例性的空腔环形气体传感器包括用于接收要检测的气体和至少两个电磁辐射源的光学腔。 第一电磁辐射源可以发射具有对应于待检测气体的吸收波长的波长的第一光束,并且第二电磁辐射源可以发射具有不同于吸收的第二波长的第二光束 待检测气体的波长。 第一束光束可以检测到空腔环时间衰减,这与待检测气体的浓度有关。 第二光束可用于检测基线空腔衰减时间衰减,其可以用于通过例如有助于补偿由第一光束检测到的气体的浓度来增加传感器的精度 用于例如由传感器年龄,温度或压力变化引起的传感器变化和/或其他条件。