公开(公告)号：US20140306720A1

公开(公告)日：2014-10-16

申请号：US13862986

申请日：2013-04-15

申请人： NATIONAL INSTRUMENTS CORPORATION

发明人： Daniel S. Wertz ,  Michael J. Seibel

IPC分类号： G01R27/02 ,  G01R29/26

CPC分类号： G01R27/32 ,  G01R19/0053 ,  G01R23/20 ,  G01R29/26 ,  G01R31/2616 ,  G01R31/2626 ,  G01R31/2646

摘要： Measurements, e.g. S-parameter measurements may be performed by obtaining a complex ratio of at least two signals, using a single signal-receiver while eliminating noise problems traditionally associated with single receiver systems. A Vector Signal Generator (VSG) may be used to generate the input stimulus (signal), making it possible to share the local oscillator (LO) signal of the VSG with a single vector receiver, such that the phase noise of the LO signal is common to both the VSG and the vector receiver. When the stimulus signal from the VSG is observed with the vector receiver, the LO phase noise is unobservable, resulting in a significant reduction of the phase noise in the measured signals in both the numerator and the denominator, which in turn leads to a significant reduction in the phase noise of the ratio while retaining the benefits of a simple, single receiver.

摘要翻译： 测量，例如 S参数测量可以通过使用单个信号接收器获得至少两个信号的复数比来执行，同时消除传统上与单个接收机系统相关联的噪声问题。 可以使用矢量信号发生器（VSG）来产生输入激励（信号），使得可以用单个矢量接收器共享VSG的本地振荡器（LO）信号，使得LO信号的相位噪声为 对VSG和矢量接收器都是共同的。 当使用矢量接收器观察来自VSG的激励信号时，LO相位噪声是不可观测的，导致在分子和分母中的测量信号中的相位噪声显着降低，这又导致显着的减小 在比例的相位噪声中，同时保持简单，单一接收机的优点。

公开(公告)号：US20130015889A1

公开(公告)日：2013-01-17

申请号：US13525440

申请日：2012-06-18

申请人： SCOTT B. KESLER

发明人： SCOTT B. KESLER

IPC分类号： H03K3/00

CPC分类号： H03K17/168 ,  G01R31/2616 ,  H03K17/30

摘要： A system and method for operating a power transistor. Parasitic impedances naturally present in a circuit board or other interconnect structures exhibit a parasitic impedance effective to generate a parasitic voltage signal in response to operating the power transistor. The parasitic voltage signal is monitored in order to better control the power transistor. In particular, the threshold voltage of the power transistor can be determined and used to more optimally control the power transistor.

摘要翻译： 一种用于操作功率晶体管的系统和方法。 天线存在于电路板或其它互连结构中的寄生阻抗表现出有效地响应于功率晶体管的操作产生寄生电压信号的寄生阻抗。 监控寄生电压信号，以便更好地控制功率晶体管。 特别地，可以确定功率晶体管的阈值电压并用于更好地控制功率晶体管。

公开(公告)号：US09541592B1

公开(公告)日：2017-01-10

申请号：US14471111

申请日：2014-08-28

申请人： Christos Tsironis

发明人： Christos Tsironis

IPC分类号： G01R29/26 ,  G01R31/26 ,  G01R27/28 ,  G01R31/28

CPC分类号： G01R29/26 ,  G01R27/28 ,  G01R31/2616 ,  G01R31/2822

摘要： A noise parameter test setup allows accurately measuring the four noise parameters (Fmin, Rn, Γopt) of microwave transistors over a wide frequency range using two wideband directional couplers, instead of SPDT switches, to merge the s-parameter (signal) measurement path and the noise measurement path, avoiding thus the uncertainty of the switching repeatability of the SPDT switches and improving the measurement accuracy. Calibration of the system is the same as when using switches. Additional power control precautions of the VNA sources are necessary to avoid injecting large signal power into the sensitive noise receiver during s-parameter measurements and jamming the weak noise power during noise measurement.

摘要翻译： 噪声参数测试设置允许使用两个宽带定向耦合器（而不是SPDT开关）在宽频率范围内精确测量微波晶体管的四个噪声参数（Fmin，Rn，Γopt），以合并s参数（信号）测量路径和 噪声测量路径，避免了SPDT开关切换重复性的不确定性，提高了测量精度。 系统的校准与使用开关时相同。 VNA源的额外功率控制注意事项是必要的，以避免在s参数测量过程中将敏感噪声接收器中的大信号功率注入，并在噪声测量期间干扰弱噪声功率。

公开(公告)号：US08760215B2

公开(公告)日：2014-06-24

申请号：US13525440

申请日：2012-06-18

申请人： Scott B. Kesler

发明人： Scott B. Kesler

IPC分类号： H03K17/567 ,  G05F1/10 ,  H03K17/30 ,  H03K17/16 ,  G01R31/26

CPC分类号： H03K17/168 ,  G01R31/2616 ,  H03K17/30

摘要： A system and method for operating a power transistor. Parasitic impedances naturally present in a circuit board or other interconnect structures exhibit a parasitic impedance effective to generate a parasitic voltage signal in response to operating the power transistor. The parasitic voltage signal is monitored in order to better control the power transistor. In particular, the threshold voltage of the power transistor can be determined and used to more optimally control the power transistor.

摘要翻译： 一种用于操作功率晶体管的系统和方法。 天线存在于电路板或其它互连结构中的寄生阻抗表现出有效地响应于功率晶体管的操作产生寄生电压信号的寄生阻抗。 监控寄生电压信号，以便更好地控制功率晶体管。 特别地，可以确定功率晶体管的阈值电压并用于更好地控制功率晶体管。

公开(公告)号：US11747384B2

公开(公告)日：2023-09-05

申请号：US17179143

申请日：2021-02-18

申请人： The Government of the United States of America, as represented by the Secretary of the Navy

发明人： Luciano Boglione

IPC分类号： G01R31/26 ,  G01R29/26

CPC分类号： G01R29/26 ,  G01R31/2616 ,  G01R31/2626

摘要： A method to determine noise parameters of a scalable device, is presented in which the determination of the noise parameters of the scalable device is independent of the model adopted for the device. The scalable device is connected as part of a test circuit including a noise source, a recirculator, a first power detector and a second power detector. The first power detector is connected to the recirculator and between the noise source and the scalable device and the second detector is connected to the device under test.

公开(公告)号：US09366710B1

公开(公告)日：2016-06-14

申请号：US14244439

申请日：2014-04-03

申请人： Christos Tsironis

发明人： Christos Tsironis

IPC分类号： G01R27/06 ,  G01R29/26 ,  G01R27/02

CPC分类号： G01R29/26 ,  G01R27/02 ,  G01R31/2616 ,  G01R31/2626

摘要： A wideband four noise parameter extraction method uses randomly distributed source states; the data are collected using wideband electro-mechanical tuners and noise and small signal receivers (network analyzers) in fast frequency sweeps; because of the random nature of source impedances reliable noise parameter values are extracted using selected source admittance states, distinctly regrouped in a cluster around the reflection factor associated with the optimum noise figure Fmin and a cluster located anti-diametric to it for determining the equivalent noise resistance Rn. Multiple noise parameter extractions for all possible cross-combinations of source impedance states in each cluster at each measured frequency allows reliable and physically meaningful generation of wideband noise parameters, even for very low noise and potentially unstable DUT's.

摘要翻译： 宽带四噪声参数提取方法使用随机分布的源状态; 使用宽带机电调谐器和噪声和小信号接收器（网络分析仪）在快速扫频中收集数据; 由于源阻抗的随机性质，使用选定的源导纳状态提取可靠的噪声参数值，在与最佳噪声系数Fmin相关联的反射系数周围的群集中明显重新分组，以及定位在其上的聚类，用于确定等效噪声 电阻Rn。 在每个测量频率下，每个簇中源阻抗状态的所有可能的交叉组合的多个噪声参数提取允许即使对于非常低的噪声和潜在的不稳定的DUT来说也可以有意义地生成宽带噪声参数。

公开(公告)号：US20140368213A1

公开(公告)日：2014-12-18

申请号：US14301509

申请日：2014-06-11

申请人： ROHM CO., LTD.

发明人： Noriaki HIRAGA

IPC分类号： G01R31/28

CPC分类号： G01R31/002 ,  G01R31/2612 ,  G01R31/2616 ,  G01R31/28 ,  G01R31/2805 ,  G01R31/282 ,  G01R31/2839

摘要： A noise signal for a malfunction test is inputted to a ground terminal, and a frequency property of the magnitude of the power at which a designated electric circuit causes a malfunction is found. A detection reference ground of a detection part for detecting malfunctions of the designated electric circuit is connected at high impedance to a ground of the targeted circuit. Differential input parts are provided to the detection part, a to-be-detected part of the designated electric circuit is connected to one differential input part, and the ground of the targeted circuit is connected to the other differential input part. A ground of a noise source is isolated from a ground of a power source circuit for supplying a power source to the designated electric circuit. The ground of the noise source is galvanically isolated from the ground of the designated electric circuit.

摘要翻译： 用于故障测试的噪声信号被输入到接地端子，并且发现指定的电路导致故障的功率的大小的频率特性。 用于检测指定电路的故障的检测部分的检测基准接地以高阻抗连接到目标电路的接地。 差分输入部分提供给检测部分，指定电路的被检测部分连接到一个差分输入部分，目标电路的接地连接到另一个差分输入部分。 噪声源的接地与用于向指定电路供电的电源电路的接地隔离。 噪声源的地面与指定电路的地面电隔离。

公开(公告)号：US09470735B2

公开(公告)日：2016-10-18

申请号：US14301509

申请日：2014-06-11

申请人： ROHM CO., LTD.

发明人： Noriaki Hiraga

IPC分类号： G01R31/02 ,  G01R31/28 ,  G01R31/00 ,  G01R31/26

CPC分类号： G01R31/002 ,  G01R31/2612 ,  G01R31/2616 ,  G01R31/28 ,  G01R31/2805 ,  G01R31/282 ,  G01R31/2839

摘要： A noise signal for a malfunction test is inputted to a ground terminal, and a frequency property of the magnitude of the power at which a designated electric circuit causes a malfunction is found. A detection reference ground of a detection part for detecting malfunctions of the designated electric circuit is connected at high impedance to a ground of the targeted circuit. Differential input parts are provided to the detection part, a to-be-detected part of the designated electric circuit is connected to one differential input part, and the ground of the targeted circuit is connected to the other differential input part. A ground of a noise source is isolated from a ground of a power source circuit for supplying a power source to the designated electric circuit. The ground of the noise source is galvanically isolated from the ground of the designated electric circuit.

摘要翻译： 用于故障测试的噪声信号被输入到接地端子，并且发现指定的电路导致故障的功率的大小的频率特性。 用于检测指定电路的故障的检测部分的检测基准接地以高阻抗连接到目标电路的接地。 差分输入部分提供给检测部分，指定电路的被检测部分连接到一个差分输入部分，目标电路的接地连接到另一个差分输入部分。 噪声源的接地与用于向指定电路供电的电源电路的接地隔离。 噪声源的地面与指定电路的地面电隔离。

公开(公告)号：US09188617B2

公开(公告)日：2015-11-17

申请号：US13862986

申请日：2013-04-15

申请人： National Instruments Corporation

发明人： Daniel S. Wertz ,  Michael J. Seibel

IPC分类号： G01R29/26 ,  G01R27/28 ,  G01R27/32 ,  G01R31/26 ,  G01R19/00 ,  G01R23/20

CPC分类号： G01R27/32 ,  G01R19/0053 ,  G01R23/20 ,  G01R29/26 ,  G01R31/2616 ,  G01R31/2626 ,  G01R31/2646

摘要： Measurements, e.g. S-parameter measurements may be performed by obtaining a complex ratio of at least two signals, using a single signal-receiver while eliminating noise problems traditionally associated with single receiver systems. A Vector Signal Generator (VSG) may be used to generate the input stimulus (signal), making it possible to share the local oscillator (LO) signal of the VSG with a single vector receiver, such that the phase noise of the LO signal is common to both the VSG and the vector receiver. When the stimulus signal from the VSG is observed with the vector receiver, the LO phase noise is unobservable, resulting in a significant reduction of the phase noise in the measured signals in both the numerator and the denominator, which in turn leads to a significant reduction in the phase noise of the ratio while retaining the benefits of a simple, single receiver.

摘要翻译： 测量，例如 S参数测量可以通过使用单个信号接收器获得至少两个信号的复数比来执行，同时消除传统上与单个接收机系统相关联的噪声问题。 可以使用矢量信号发生器（VSG）来产生输入激励（信号），使得可以用单个矢量接收器共享VSG的本地振荡器（LO）信号，使得LO信号的相位噪声为 对VSG和矢量接收器都是共同的。 当使用矢量接收器观察来自VSG的激励信号时，LO相位噪声是不可观测的，导致在分子和分母中的测量信号中的相位噪声显着降低，这又导致显着的减小 在比例的相位噪声中，同时保持简单，单一接收机的优点。

公开(公告)号：US09170290B1

公开(公告)日：2015-10-27

申请号：US13974782

申请日：2013-08-23

申请人： Jeffrey Clark

发明人： Jeffrey Clark

IPC分类号： G01R29/26 ,  G01R31/26 ,  G01R31/317 ,  G01R33/00

CPC分类号： G01R29/26 ,  G01R31/2616 ,  G01R31/2626 ,  G01R31/2646 ,  G01R31/31709 ,  G01R31/31725 ,  G01R33/0029

摘要： A method for measuring acoustic impulse response of a Device Under Test (DUT) addresses sample rate variations by determining clock rate differences between the DUT and test system, and making adjustments to compensate for the different clock rates. An interrogation signal is generated with two “events” spaced a known number of samples apart, at the nominal sampling rate of the DUT. The interrogation signal is played through the DUT and recorded by a measurement system. The number of samples between the two “events” is measured in the sampled signal to determine the shift introduced by the different clock rates. The adjustment is then applied to either the original frequency response measurement signal by adjusting the sampling rate of a frequency response measurement signal to compensate for the different clock rates, or to the measured signal before averaging, to align the samples and prevent cancelling.

摘要翻译： 用于测量被测设备（DUT）的声脉冲响应的方法通过确定DUT和测试系统之间的时钟速率差异来进行采样率变化，并进行调整以补偿不同的时钟速率。 产生一个询问信号，其中两个“事件”按照DUT的标称采样率间隔已知数量的采样。 询问信号通过DUT播放并由测量系统记录。 在采样信号中测量两个“事件”之间的样本数，以确定由不同时钟速率引入的移位。 然后通过调整频率响应测量信号的采样率来补偿原始频率响应测量信号，以补偿不同的时钟速率或平均之前的测量信号来调整原始频率响应测量信号，以对准样本并防止取消。