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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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4.发明授权Method for enabling a device under test (DUT) to retry a portion of a pre-defined test sequence 有权允许被测设备（DUT）重试预定义测试序列的一部分的方法公开(公告)号：US08693529B2
公开(公告)日：2014-04-08
申请号：US13437652
申请日：2012-04-02
申请人： Christian Volf Olgaard , Ruizu Wang , Guy Shaviv
发明人： Christian Volf Olgaard , Ruizu Wang , Guy Shaviv
IPC分类号： H04B3/46
CPC分类号： H04W56/00 , H04B17/17 , H04B17/364
摘要： Execution of a block test “retry” in a test environment with each block in the test sequence sent after the tester has determined that the previous block of data packets has met one or more prescribed test criterion. If a block sent by the DUT has not met the test criterion, a retry sequence is initiated to re-test the block. In another embodiment, a block test “retry” is executed where each block in the test sequence is sent and analysis of previously sent blocks is done in parallel with the sending of a subsequent block. If a previous block has not met the test criterion, a retry sequence is initiated whereby the tester and DUT step back to the block that failed to meet the test criterion and retry that block. If the retry meets test criterion, testing continues by resuming with the next untested block in the sequence.
摘要翻译： 在测试者确定先前的数据包块已经达到一个或多个规定的测试标准之后，在测试环境中执行块测试“重试”测试序列中的每个块。 如果DUT发送的块没有达到测试标准，则重试序列被启动以重新测试该块。 在另一个实施例中，执行块测试“重试”，其中测试序列中的每个块被发送，并且先前发送的块的分析与后续块的发送并行完成。 如果先前的块没有达到测试标准，则重试序列被启动，由此测试器和DUT重新返回到不符合测试标准的块，并重试该块。 如果重试满足测试标准，则通过继续使用序列中的下一个未测试块来继续测试。
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公开(公告)号：US20120113829A1
公开(公告)日：2012-05-10
申请号：US12943237
申请日：2010-11-10
申请人： Christian Volf Olgaard , Ruizu Wang
发明人： Christian Volf Olgaard , Ruizu Wang
IPC分类号： H04L12/26
摘要： A method and system for testing a wireless data packet transceiver as a device under test (DUT) adapted to operate in conformance with a wireless signal standard such that a transmitted signal, when received by an intended receiver, is to result in a responsive signal transmission acknowledging such signal reception. During testing, responsive signal transmissions, e.g., acknowledgement signals, are withheld by the test system until after a predetermined number of data packets have been captured from the DUT, until a predetermined time interval has passed, or until data packets at a predetermined number of data rates have been captured from the DUT.
摘要翻译： 一种用于测试无线数据分组收发器作为适于根据无线信号标准进行操作的被测设备（DUT）的方法和系统，使得当预期接收机接收到的发射信号将导致响应信号传输 承认这样的信号接收。 在测试期间，由测试系统保留响应信号传输，例如确认信号，直到从DUT被捕获到预定数量的数据分组，直到经过预定的时间间隔，或直到预定数量的 数据速率已从DUT捕获。
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6.发明授权System and method for synchronized triggering of test equipment for testing MIMO transceivers 有权用于测试MIMO收发器的测试设备的同步触发的系统和方法公开(公告)号：US08774729B2
公开(公告)日：2014-07-08
申请号：US13462141
申请日：2012-05-02
IPC分类号： H04B17/00
CPC分类号： H04B17/0085 , H04B7/0413
摘要： A system and method for testing multiple-input-multiple-output (MIMO) devices under test (DUTs) with multiple radio frequency (RF) signal testers. Each tester receives one or more RF signals from one or more of the DUTs, and the testers are mutually coupled in a ring such that successive ones receive a trigger input signal from an upstream tester and provide a trigger output signal to a downstream tester. Each tester is responsive to its input trigger signal and its one or more RF signals by providing its output trigger signal such that its output trigger signal has an asserted state initiated in response to an assertion of its input trigger signal and a transcending of a predetermined magnitude by at least one of the one or more RF signals.
摘要翻译： 一种用于测试多个射频（RF）信号测试仪的被测试多输入多输出（MIMO）器件（DUT）的系统和方法。 每个测试仪从一个或多个DUT接收一个或多个RF信号，并且测试器在环中相互耦合，使得连续的接收来自上游测试器的触发输入信号并向下游测试器提供触发输出信号。 每个测试器通过提供其输出触发信号来响应于其输入触发信号及其一个或多个RF信号，使得其输出触发信号具有响应于其输入触发信号的断言和超出预定幅度而被启动的有效状态 通过所述一个或多个RF信号中的至少一个。
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公开(公告)号：US08774024B2
公开(公告)日：2014-07-08
申请号：US12943237
申请日：2010-11-10
申请人： Christian Volf Olgaard , Ruizu Wang
发明人： Christian Volf Olgaard , Ruizu Wang
IPC分类号： H04L12/26
摘要： A method and system for testing a wireless data packet transceiver as a device under test (DUT) adapted to operate in conformance with a wireless signal standard such that a transmitted signal, when received by an intended receiver, is to result in a responsive signal transmission acknowledging such signal reception. During testing, responsive signal transmissions, e.g., acknowledgement signals, are withheld by the test system until after a predetermined number of data packets have been captured from the DUT, until a predetermined time interval has passed, or until data packets at a predetermined number of data rates have been captured from the DUT.
摘要翻译： 一种用于测试无线数据分组收发器作为适于根据无线信号标准进行操作的被测设备（DUT）的方法和系统，使得当预期接收机接收到的发射信号将导致响应信号传输 承认这样的信号接收。 在测试期间，由测试系统保留响应信号传输，例如确认信号，直到从DUT被捕获到预定数量的数据分组，直到经过预定的时间间隔，或直到预定数量的 数据速率已从DUT捕获。
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8.发明申请SYSTEM AND METHOD FOR SIMULTANEOUS MIMO SIGNAL TESTING WITH SINGLE VECTOR SIGNAL ANALYZER 有权具有单载波信号分析器的同步MIMO信号测试的系统和方法公开(公告)号：US20120269288A1
公开(公告)日：2012-10-25
申请号：US13089945
申请日：2011-04-19
申请人： Christian Volf Olgaard , Ruizu Wang
发明人： Christian Volf Olgaard , Ruizu Wang
CPC分类号： H04L1/24 , H04B7/0413
摘要： Signal conversion circuitry and method for converting a multiple input, multiple output (MIMO) packet data signal transmission to a plurality of complex data samples for processing by shared test equipment, e.g., a single vector signal analyzer (VSA).
摘要翻译： 信号转换电路和用于将多输入多输出（MIMO）分组数据信号传输转换为多个复数数据采样的方法，用于共享测试设备，例如单个矢量信号分析仪（VSA）的处理。
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公开(公告)号：US10298340B2
公开(公告)日：2019-05-21
申请号：US15535135
申请日：2016-12-22
发明人： Christian Volf Olgaard , Ruizu Wang , Qing Jie Lu
IPC分类号： H04B17/318 , H04B17/21
摘要： A method for improving accuracy of power measurements of low power radio frequency (RF) signals received by a RF signal receiver in which power measurement accuracy taken at a low resolution is compensated with use of multiple RF signal attenuations at a finer resolution. In accordance with exemplary embodiments, incremental RF signal attenuations are applied to the received RF signal. An average of the power measurements, including those with the applied signal attenuations, has a net measurement error less than that of a direct power measurement.
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10.发明授权公开(公告)号：US08913504B2
公开(公告)日：2014-12-16
申请号：US13462459
申请日：2012-05-02
申请人： Christian Volf Olgaard , Ruizu Wang
发明人： Christian Volf Olgaard , Ruizu Wang
摘要： A system and method for initiating testing of a plurality of communication devices. The tester and devices under test (DUTs) are first synchronized as a way of confirming test readiness on the part of the DUTs, Following that, a test sequence is initiated by the tester. The synchronization and test initiation can be accomplished using signals with differing signal magnitudes or device identifiers. The test sequence can be a DUT transmit signal test in which each DUT transmits data packets in accordance with one or more predefined test sequences. Alternatively, the test sequence can be a DUT receive signal test in which the tester transmits data packets to the DUTs with differing signal frequencies or signal magnitudes.
摘要翻译： 一种用于发起对多个通信设备的测试的系统和方法。 测试器和被测器件（DUT）首先被同步，以确认被测部件的测试准备状态，之后测试程序由测试仪启动。 可以使用具有不同信号幅度或设备标识符的信号来实现同步和测试启动。 测试序列可以是DUT发射信号测试，其中每个DUT根据一个或多个预定义的测试序列传输数据分组。 或者，测试序列可以是DUT接收信号测试，其中测试仪向具有不同信号频率或信号幅度的DUT发送数据分组。
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