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69 条记录 (耗时 0.025 秒)

    Method for identifying self-generated spurious signals
    56.
    发明授权
    Method for identifying self-generated spurious signals 有权
    用于识别自发信号的方法

    公开(公告)号：US08912804B2

    公开(公告)日：2014-12-16

    申请号：US13416517

    申请日：2012-03-09

    申请人： Christian Volf Olgaard ,  Qiang Zhao

    发明人： Christian Volf Olgaard ,  Qiang Zhao

    IPC分类号： G01R27/04 ,  G01R31/28 ,  G01R31/00

    CPC分类号： G01R31/2841 ,  G01R31/001

    摘要： A local oscillator (LO) of a test system is set to an initial frequency whereupon a device under test (DUT) transmits a radio frequency (RF) signal to the test system. Characteristics of the RF signal are measured with the test system and used to identify magnitudes and frequencies of spurious signal products. The LO of the test system is reset to one or more subsequent frequencies that are offset from the initial frequency. One or more subsequent RF signals are transmitted from the DUT to the test system, with the DUT maintaining its original signal settings. Characteristics of the subsequent RF signals are measured with the test system and used to identify magnitudes and frequencies of spurious signal products for each of the subsequent LO frequencies. The spurious signal products that have shifted in frequency for each of the subsequent LO frequencies as self-generated signal products can then be identified.

    摘要翻译： 测试系统的本地振荡器（LO）被设置为初始频率，随后被测器件（DUT）向测试系统发送射频（RF）信号。 使用测试系统测量RF信号的特性，并用于识别寄生信号产品的幅度和频率。 测试系统的LO被重置为偏离初始频率的一个或多个后续频率。 一个或多个随后的RF信号从DUT发送到测试系统，DUT保持其原始信号设置。 随后的RF信号的特性用测试系统测量，并用于识别每个后续LO频率的杂散信号产物的幅度和频率。 随后可以识别随后的每个LO频率在频率上偏移的杂散信号产物作为自发信号产物。

    Apparatus, system and method for calibrating and verifying a wireless communication device
    57.
    发明授权
    Apparatus, system and method for calibrating and verifying a wireless communication device 有权
    用于校准和验证无线通信设备的装置，系统和方法

    公开(公告)号：US08676188B2

    公开(公告)日：2014-03-18

    申请号：US11839788

    申请日：2007-08-16

    申请人： Christian Volf Olgaard

    发明人： Christian Volf Olgaard

    IPC分类号： H04W24/00 ,  H04B17/00 ,  H04B7/00

    CPC分类号： H04B17/0085 ,  H04B17/21 ,  H04L43/50 ,  H04W24/06 ,  H04W88/02

    摘要： An apparatus for testing a wireless communication device includes a receiver, a capture module, and a control module. The receiver receives at least one test packet transmitted from the wireless communication device. The capture module captures at least a portion of the at least one test packet. The control module selectively controls the capture module to capture at least the portion based on a predetermined test flow. In one example, the at least one test packet is transmitted by the wireless communication device according to the predetermined test flow. In one example, control module selectively controls the capture module to capture at least the portion based on an expected calibration value associated with the at least one test packet. In one example, the control module selectively controls the capture module to capture at least the portion based on a predetermined value of interest.

    摘要翻译： 一种用于测试无线通信设备的设备包括接收机，捕获模块和控制模块。 接收器接收从无线通信设备发送的至少一个测试分组。 捕获模块捕获至少一个测试分组的至少一部分。 控制模块基于预定的测试流程选择性地控制捕捉模块至少捕获该部分。 在一个示例中，根据预定的测试流程，无线通信设备发送至少一个测试分组。 在一个示例中，控制模块基于与所述至少一个测试分组相关联的预期校准值来选择性地控制所述捕获模块至少捕获所述部分。 在一个示例中，控制模块选择性地控制捕获模块以基于预期感兴趣的值至少捕获该部分。

    Apparatus and method for testing a wireless transceiver
    58.
    发明授权
    Apparatus and method for testing a wireless transceiver 失效
    用于测试无线收发器的装置和方法

    公开(公告)号：US08509090B2

    公开(公告)日：2013-08-13

    申请号：US11867467

    申请日：2007-10-04

    申请人： Christian Volf Olgaard

    发明人： Christian Volf Olgaard

    IPC分类号： H04L12/26

    CPC分类号： G01R31/31715

    摘要： An apparatus for testing a communication circuit includes a dynamic range module. The dynamic range module includes signal strength adjustment module and a control module. The signal strength adjustment module adjusts a peak signal strength of test packets transmitted according to a predetermined test sequence. The control module selectively controls the signal strength adjustment module to adjust the peak signal strength based on the predetermined test sequence.

    摘要翻译： 用于测试通信电路的装置包括动态范围模块。 动态范围模块包括信号强度调节模块和控制模块。 信号强度调整模块根据预定的测试顺序调整发送的测试分组的峰值信号强度。 控制模块基于预定的测试顺序选择性地控制信号强度调节模块来调整峰值信号强度。

    SYSTEM AND METHOD OF MAINTAINING CORRECTION OF DC OFFSETS IN FREQUENCY DOWN-CONVERTED DATA SIGNALS
    59.
    发明申请
    SYSTEM AND METHOD OF MAINTAINING CORRECTION OF DC OFFSETS IN FREQUENCY DOWN-CONVERTED DATA SIGNALS 有权
    频率下变频数据信号中直流偏差校正的系统和方法

    公开(公告)号：US20130188678A1

    公开(公告)日：2013-07-25

    申请号：US13357370

    申请日：2012-01-24

    申请人： Christian Volf Olgaard ,  Ruizu Wang ,  Erdem Serkan Erdogan

    发明人： Christian Volf Olgaard ,  Ruizu Wang ,  Erdem Serkan Erdogan

    IPC分类号： H04L25/06 ,  H04L12/26

    CPC分类号： H04L25/061

    摘要： Circuitry and method for reduce test time for wireless signal systems by using dynamic adaptive correction of DC offsets generated by the test instrument. The data signal is sampled for downstream processing including during pre-, inter-, or post-packet time intervals where no packet-data signal is occurring and where the device's power amplifier is turned off. The sampled data signal is measured for a DC offset occurring during these inter-packet time gaps. Compensating DC offset values are stored in a table indexed by frequency, gain and temperature range. When a subsequent test is carried out at that frequency, gain, and temperature range, the stored compensation value is used to correct the signal. DC offsets continue to be measured, stored and applied to captured signals, continuously refining the compensation values and decreasing the need for time-intensive calibrations. When a measured DC offset exceeds pre-determined limits, the instrument undergo a calibration step.

    摘要翻译： 通过使用由测试仪器产生的直流偏移的动态自适应校正，减少无线信号系统的测试时间的电路和方法。 数据信号被采样用于下游处理，包括在没有分组数据信号出现的前，后或后分组时间间隔以及设备的功率放大器被关闭的情况下。 对于在这些分组间间隙期间发生的DC偏移来测量采样数据信号。 补偿DC偏移值存储在由频率，增益和温度范围索引的表中。 当以该频率，增益和温度范围进行后续测试时，存储的补偿值用于校正信号。 DC补偿继续被测量，存储并应用于捕获的信号，不断地改善补偿值并减少对时间密集校准的需要。 当测量的直流偏移超过预定极限时，仪器将进行校准步骤。

    System and method for testing wireless devices
    60.
    发明授权
    System and method for testing wireless devices 有权
    用于测试无线设备的系统和方法

    公开(公告)号：US08312330B2

    公开(公告)日：2012-11-13

    申请号：US11766282

    申请日：2007-06-21

    申请人： Christian Volf Olgaard

    发明人： Christian Volf Olgaard

    IPC分类号： G01R31/3193 ,  G01R31/40

    CPC分类号： H04W24/06

    摘要： A system for testing a communication device includes a testing module, a measurement module, and a control module. The testing module transmits one or more first test signals based on a first test sequence. The measurement module acquires test data by receiving one or more second test signals that are based on the one or more first test signals. The control module initiates the first test sequence in response to receiving a start test signal from an analysis system. The control module transfers the test data to the analysis system in response to a transfer data request. The control module initiates a second test sequence while the analysis system is analyzing the test data. The testing module generates and transmits one or more third test signals based on the second sequence when the second test sequence has been initiated.

    摘要翻译： 用于测试通信设备的系统包括测试模块，测量模块和控制模块。 测试模块基于第一测试序列发送一个或多个第一测试信号。 测量模块通过接收基于一个或多个第一测试信号的一个或多个第二测试信号来获取测试数据。 响应于从分析系统接收到起始测试信号，控制模块启动第一测试序列。 控制模块响应传输数据请求将测试数据传送到分析系统。 分析系统正在分析测试数据时，控制模块启动第二个测试顺序。 当第二测试序列已被启动时，测试模块基于第二序列生成并发送一个或多个第三测试信号。