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1.发明授权Method for efficient parallel testing of time division duplex (TDD) communications systems 有权用于时分双工（TDD）通信系统的有效并行测试的方法公开(公告)号：US08867372B2
公开(公告)日：2014-10-21
申请号：US13462255
申请日：2012-05-02
IPC分类号： H04L12/26
摘要： The invention described herein utilizes devices under test (DUTs) outfitted with stored, predefined test sequences, testers equipped with vector-signal generation (VSG) and vector-signal analysis (VSA) functionality, and novel methods for combining loopback and single-ended test functions in order to obtain higher testing efficiency for DUTs using Bluetooth or other time-division duplex (TDD) based communications.
摘要翻译： 本文描述的本发明使用配备有存储的预定义测试序列的测试装置（DUT），配备有矢量信号生成（VSG）和矢量信号分析（VSA）功能的测试器，以及用于组合环回和单端测试的新颖方法 功能，以便使用蓝牙或其他时分双工（TDD）通信的DUT获得更高的测试效率。
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2.发明授权System and method of maintaining correction of DC offsets in frequency down-converted data signals 有权维持降频转换数据信号中DC偏移校正的系统和方法公开(公告)号：US08537942B2
公开(公告)日：2013-09-17
申请号：US13357370
申请日：2012-01-24
IPC分类号： H04B1/10
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。
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3.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
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。
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