公开(公告)号：US06768390B1

公开(公告)日：2004-07-27

申请号：US10405572

申请日：2003-04-02

申请人： Joel P. Dunsmore ,  Berry Carone ,  Stephen T. Sparks

发明人： Joel P. Dunsmore ,  Berry Carone ,  Stephen T. Sparks

IPC分类号： H03C300

CPC分类号： H03C3/403

摘要： Modulated differential (balanced) drive signals are created where, at least one of the signals can be controlled in phase relative to the other, and both of which could be controlled in amplitude and both of which have the same modulation envelope. In one embodiment, a coherent signal is generated in a first electronic signal generator (ESG) and applied to a second ESG. The coherent signal replaces the normal input signal of the second ESG and the I and Q inputs of the second ESG control the amplitude and phase of the output signal. This output signal is applied to a third ESG replacing the normal input signal to the vector modulator. The vector modulator is controlled by the same I and Q input as is the first ESG, thereby producing an output signal which has the same modulation envelope as the output signal from the first

摘要翻译： 产生调制的差分（平衡）驱动信号，其中至少一个信号可以相对于另一个相位进行相位控制，并且这两个信号可以以幅度进行控制，并且两者都具有相同的调制包络。 在一个实施例中，在第一电子信号发生器（ESG）中产生相干信号并施加到第二ESG。 相干信号代替第二ESG的正常输入信号，第二ESG的I和Q输入控制输出信号的幅度和相位。 该输出信号被施加到替换向量调制器的正常输入信号的第三ESG。 矢量调制器由与第一ESG相同的I和Q输入控制，从而产生具有与来自第一ESG的输出信号相同的调制包络的输出信号

公开(公告)号：US10718804B2

公开(公告)日：2020-07-21

申请号：US13362639

申请日：2012-01-31

申请人： Dara Sariaslani ,  Joel P. Dunsmore

发明人： Dara Sariaslani ,  Joel P. Dunsmore

IPC分类号： G01R29/26

摘要： A system for measuring residual phase noise of a device under test (DUT) includes first and second signal sources, first and second receivers, and a processor. The first signal source generates a first signal to be input to the DUT as a stimulus signal and provides a second signal that is phase coherent with the first signal. The second signal source receives the second signal and generates a reference signal based on the second signal, which is phase coherent with the stimulus signal. The first receiver measures an output signal from the DUT responsive to the stimulus signal, and the second receiver measures the reference signal from the second signal source. The processor mathematically suppresses a carrier of the output signal by determining a difference between the measured output signal and the measured reference signal, and determines the residual phase noise of the DUT based on the difference.

公开(公告)号：US07038465B2

公开(公告)日：2006-05-02

申请号：US10405533

申请日：2003-04-02

申请人： Joel P. Dunsmore ,  Brian LeMay

发明人： Joel P. Dunsmore ,  Brian LeMay

IPC分类号： G01R35/00

CPC分类号： H03C3/40 ,  H03D7/14

摘要： The power differential between balanced signals is measured and the resultant level is used to control the phase between the signals. In one embodiment, I and Q inputs to vector modulator is adjusted to control the phase.

摘要翻译： 测量平衡信号之间的功率差，并将结果电平用于控制信号之间的相位。 在一个实施例中，调整向矢量调制器的I和Q输入以控制相位。

公开(公告)号：US06448786B1

公开(公告)日：2002-09-10

申请号：US09710978

申请日：2000-11-09

申请人： Joel P. Dunsmore ,  Michael E Knox

发明人： Joel P. Dunsmore ,  Michael E Knox

IPC分类号： G01R3500

CPC分类号： G01R27/28

摘要： A vector stimulus/response system enables the vector responses of frequency translation devices (FTDs) to be accurately characterized. The system includes a source, having a predetermined source match, reflection tracking and directivity, that generates a stimulus signal. A receiver having a predetermined load match is also included in the system. The receiver measures a first series of responses of a reference translator to the stimulus signal, when the reference translator is coupled between the source and receiver. The reference translator has predetermined transmission characteristics, input match and output match. The receiver measures a second series of responses of a FTD to the stimulus signal. A processor generates a correction array from the first series of responses, the predetermined transmission characteristics, input match output match, source match, and the directivity, reflection tracking and load match. The processor then applies the generated correction array to modify the second series of responses to provide vector characteristics of the FTD. A phase coherent reference and an amplitude reference for the receiver are provided by a parallel reference path or by a series reference path. The systems are alternatively implemented according to a method for vector characterization of frequency translation devices.

摘要翻译： 矢量刺激/响应系统使得频率转换装置（FTD）的矢量响应能够被准确地表征。 该系统包括产生刺激信号的源，具有预定的源匹配，反射跟踪和方向性。 具有预定负载匹配的接收机也包括在系统中。 当参考转换器耦合在源和接收器之间时，接收器测量参考转换器对激励信号的第一系列响应。 参考翻译器具有预定的传输特性，输入匹配和输出匹配。 接收机测量FTD对刺激信号的第二系列响应。 处理器从第一系列响应，预定传输特性，输入匹配输出匹配，源匹配以及方向性，反射跟踪和负载匹配产生校正阵列。 然后，处理器应用所生成的校正阵列来修改第二系列响应以提供FTD的矢量特征。 接收机的相位相干参考和幅度参考由并行参考路径或串行参考路径提供。 根据用于频率转换装置的矢量表征的方法，替代地实现该系统。

公开(公告)号：US5103195A

公开(公告)日：1992-04-07

申请号：US420973

申请日：1989-10-13

申请人： Joel P. Dunsmore

发明人： Joel P. Dunsmore

IPC分类号： H01P1/15 ,  H03K17/693 ,  H03K17/74

CPC分类号： H01P1/15 ,  H01L2224/48237 ,  H01L2924/01019 ,  H01L2924/0102 ,  H01L2924/01079 ,  H01L2924/1423 ,  H01L2924/19041 ,  H01L2924/30107 ,  H01L2924/3011

摘要： A hybrid transfer switch comprises at least a pair of GaAs MMIC FET SPDT switches coupled together by a transmission line. PIN diodes are coupled to the transmission line and to DC bias circuitry. The hybrid switch performance closely approximates that of a mechanical/electromechanical transfer switch while providing improved repeatability.

公开(公告)号：US20130197848A1

公开(公告)日：2013-08-01

申请号：US13362639

申请日：2012-01-31

申请人： Dara Sariaslani ,  Joel P. Dunsmore

发明人： Dara Sariaslani ,  Joel P. Dunsmore

IPC分类号： G06F19/00 ,  G01R35/00

CPC分类号： G01R29/26

摘要： A system for measuring residual phase noise of a device under test (DUT) includes first and second signal sources, first and second receivers, and a processor. The first signal source generates a first signal to be input to the DUT as a stimulus signal and provides a second signal that is phase coherent with the first signal. The second signal source receives the second signal and generates a reference signal based on the second signal, which is phase coherent with the stimulus signal. The first receiver measures an output signal from the DUT responsive to the stimulus signal, and the second receiver measures the reference signal from the second signal source. The processor mathematically suppresses a carrier of the output signal by determining a difference between the measured output signal and the measured reference signal, and determines the residual phase noise of the DUT based on the difference.

摘要翻译： 用于测量待测器件（DUT）的残余相位噪声的系统包括第一和第二信号源，第一和第二接收器以及处理器。 第一信号源产生要作为激励信号输入到DUT的第一信号，并提供与第一信号相位相干的第二信号。 第二信号源接收第二信号并且基于与激励信号相位相位的第二信号产生参考信号。 第一接收机响应于激励信号测量来自DUT的输出信号，并且第二接收机测量来自第二信号源的参考信号。 处理器通过确定测量的输出信号和测量的参考信号之间的差异来数学地抑制输出信号的载波，并且基于该差确定DUT的残余相位噪声。

公开(公告)号：US07545150B2

公开(公告)日：2009-06-09

申请号：US11680610

申请日：2007-02-28

申请人： Keith F. Anderson ,  David V. Blackham ,  Joel P. Dunsmore ,  Loren C Betts ,  Nicholas C. Leindecker

发明人： Keith F. Anderson ,  David V. Blackham ,  Joel P. Dunsmore ,  Loren C Betts ,  Nicholas C. Leindecker

IPC分类号： G01R35/00

CPC分类号： G01R27/28 ,  G01R27/04

摘要： A measurement and correction method provides for a complete full correction of a true-mode system using only the single ended error matrix developed for 4 port correction of single ended measurements. The degree of misalignment of the balanced sources may be determined from these measurements.

摘要翻译： 测量和校正方法提供了仅使用针对单端测量的4端口校正开发的单端误差矩阵的真模式系统的完全完全校正。 可以从这些测量中确定平衡源的未对准程度。

公开(公告)号：US07148702B2

公开(公告)日：2006-12-12

申请号：US11093456

申请日：2005-03-30

申请人： Kenneth H. Wong ,  David V. Blackham ,  Joel P. Dunsmore

发明人： Kenneth H. Wong ,  David V. Blackham ,  Joel P. Dunsmore

IPC分类号： G01R27/28 ,  G01R27/04 ,  G01R35/00 ,  G06F17/50

CPC分类号： G01R27/28

摘要： In one embodiment, a vector network analyzer (VNA) comprises a plurality of ports for coupling to a device under test (DUT), at least one reference receiver for measuring signals associated with the DUT, and logic for processing measurement data from the at least one reference receiver to compensate for transmission line effects, wherein the logic for processing evaluates a function, of several controllable variables, that is a sum of multiple transmission line models, wherein each of the controllable variables is related to a respective transmission line length associated with a corresponding transmission line model.

摘要翻译： 在一个实施例中，矢量网络分析器（VNA）包括用于耦合到待测器件（DUT）的多个端口，用于测量与DUT相关联的信号的至少一个参考接收器，以及用于处理来自至少 一个用于补偿传输线效应的参考接收机，其中用于处理的逻辑评估几个可控变量的函数，其是多个传输线模型的总和，其中每个可控变量与相关联的传输线长度有关 相应的传输线模型。

公开(公告)号：US6060888A

公开(公告)日：2000-05-09

申请号：US066801

申请日：1998-04-24

申请人： David V. Blackham ,  Jason Chodora ,  Joel P. Dunsmore

发明人： David V. Blackham ,  Jason Chodora ,  Joel P. Dunsmore

IPC分类号： G01R35/00 ,  G01R27/28

CPC分类号： G01R27/28

摘要： An error correction method improves measurement accuracy of a vector network analyzer by reducing reflection measurement errors for a broad class of devices, such as filters, switches, cables, couplers, attenuators, and other passive devices tested by vector network analyzers (VNAs) that are reciprocal, having a forward transmission coefficient S.sub.21 and a reverse transmission coefficient S.sub.12 that are equal. Errors due to impedance mismatches at the load port of a transmission/reflection (T/R) test set are corrected without impacting the measurement speed of the VNA. The source port of the T/R test set is calibrated and a reflection measurement is performed while an impedance matched thruline standard of known electrical length is coupled between the source port and load port of the T/R test set. The reflection measurement is corrected for the electrical length of the thruline standard to obtain a reflection measurement of the load port of the T/R test set. Then, the transmission and reflection characteristics of the DUT are measured. The reciprocity of the DUT and the reflection measurement of the load port are used to extract the actual input reflection coefficient of the DUT.

摘要翻译： 误差校正方法通过减少诸如滤波器，开关，电缆，耦合器，衰减器和其他被矢量网络分析仪（VNA）测试的无源器件的广泛类别的器件的反射测量误差，从而提高了矢量网络分析仪的测量精度。 具有相等的正向传输系数S21和反向传输系数S12。 在传输/反射（T / R）测试装置的负载端口处由于阻抗失配导致的错误被校正，而不会影响VNA的测量速度。 校准T / R测试装置的源端口，并且在T / R测试装置的源端口和负载端口之间耦合已知电气长度的阻抗匹配thruline标准的同时进行反射测量。 根据标准的电气长度对反射测量进行校正，以获得T / R测试装置的负载端口的反射测量值。 然后，测量DUT的透射和反射特性。 DUT的互易性和负载端口的反射测量用于提取DUT的实际输入反射系数。

公开(公告)号：US09835677B2

公开(公告)日：2017-12-05

申请号：US12972791

申请日：2010-12-20

申请人： Kenneth H. Wong ,  Robert E. Shoulders ,  Joel P. Dunsmore ,  Thomas Reed ,  Erwin F. Siegel

发明人： Kenneth H. Wong ,  Robert E. Shoulders ,  Joel P. Dunsmore ,  Thomas Reed ,  Erwin F. Siegel

IPC分类号： G01R23/20 ,  G01R31/28 ,  G01R27/28

CPC分类号： G01R31/2839 ,  G01R23/20 ,  G01R27/28

摘要： A system and method for determining the linearity of a device-under-test combine a first periodic signal and a second periodic signal to produce a combined signal, wherein the second periodic signal has at least one of a phase difference and a frequency difference with respect to the first periodic signal, and applying the combined signal to an input of the device-under-test. The linearity of the device-under-test is determined from an output signal of the device-under-test based on the at least one of the phase difference and frequency difference between the first periodic signal and the second periodic signal.