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1. 发明申请

US20060155498A1 Correcting test system calibration and transforming device measurements when using multiple test fixtures 有权
公开(公告)号：US20060155498A1
公开(公告)日：2006-07-13
申请号：US10537031
申请日：2004-06-01
申请人： Joel Dunsmore , Loren Betts
发明人： Joel Dunsmore , Loren Betts
IPC分类号： G01R35/00
CPC分类号： G01R35/005 , G01R1/06772 , G01R27/28
摘要： A test system and methods using the test system correlate measurements of a device under test (DUT) regardless of which test fixture is used for in-fixture testing of the DUT. The test system includes test equipment, a test fixture that interfaces the DUT to the test equipment, a computer and a computer program executed by the computer. The computer program includes instructions that implement determining a port-specific difference array for test fixtures used with the test system. The difference array describes a difference between the test fixtures at a corresponding test port thereof. The method includes determining the difference array, measuring a performance of the DUT in a second test fixture, and applying the difference array such that the measured performance approximates a hypothetical DUT performance for the DUT as if mounted in a first test fixture.

2. 发明申请

US20060055394A1 Network analyzer including automatic port extension calibration and method of operation 有权
公开(公告)号：US20060055394A1
公开(公告)日：2006-03-16
申请号：US10939670
申请日：2004-09-13
申请人： Joel Dunsmore
发明人： Joel Dunsmore
IPC分类号： G01R23/00
CPC分类号： G01R35/005
摘要： In one embodiment, a method of automatically calibrating a network analyzer for measuring devices under test (DUTs) using a test fixture comprises generating a stimulus signal on a respective port that is coupled to the test fixture; measuring reflection of the stimulus signal on the respective port to generate measurement data, wherein the measurement data reflects a phase response of the test fixture; processing the measurement data to compensate for ripples generated by impedance mismatch at a coupling associated with the network analyzer and the test fixture; and adjusting a port extension setting of the network analyzer according to the processing.

3. 发明授权

US06643597B1 Calibrating a test system using unknown standards 失效
标题翻译：使用未知标准校准测试系统
公开(公告)号：US06643597B1
公开(公告)日：2003-11-04
申请号：US09938716
申请日：2001-08-24
申请人： Joel Dunsmore
发明人： Joel Dunsmore
IPC分类号： G06F1900
CPC分类号： G01R27/28 , G01R35/00
摘要： A method and system for calibrating a test system and a vector network analyzer use models of unknown calibration standards for a standards-based calibration. The models are selected for the unknown standards and performance data for each different calibration standard of the set are measured by the test system. The performance data is used to optimize the models by adjusting element values of constituent elements of the models. The optimized models are used to calibrate the test system such that the test system corrects for any imperfections in performance measurements taken of a device under test measured by the calibrated test system. The present invention further can correct for affects of a test fixture in device under test measurements. The method can also determine calibration coefficients for unknown calibration standards by extracting the calibration coefficients from the optimized models.
摘要翻译：用于校准测试系统和矢量网络分析仪的方法和系统使用用于基于标准的校准的未知校准标准的模型。这些模型是针对未知标准选择的，并且该组的每个不同校准标准的性能数据由测试系统测量。性能数据用于通过调整模型的组成元素的元素值来优化模型。优化的模型用于校准测试系统，使得测试系统校正通过校准测试系统测量的被测器件的性能测量中的任何缺陷。本发明还可以校正被测设备中测试夹具的影响。该方法还可以通过从优化模型中提取校准系数来确定未知校准标准的校准系数。

4. 发明申请

US20060074582A1 Network analyzer applying loss compensation using port extensions and method of operation 失效
标题翻译：网络分析仪使用端口扩展和操作方法应用损耗补偿
公开(公告)号：US20060074582A1
公开(公告)日：2006-04-06
申请号：US10939861
申请日：2004-09-13
申请人： Joel Dunsmore , Doug Bender , David Blackham
发明人： Joel Dunsmore , Doug Bender , David Blackham
IPC分类号： G06F19/00
CPC分类号： G01R35/005 , G01R27/28
摘要： In one embodiment, a method of operating a network analyzer, comprises applying a stimulus signal on at least one port of the network analyzer for provision to a device under test (DUT) within a test fixture coupled to the network analyzer; generating measurement data from the DUT in response to the stimulus signal on at least one port of the network analyzer; and generating an amplitude response of the DUT across a frequency range, wherein a port extension module of the network analyzer automatically applies loss compensation to the amplitude response in a manner that is non-linearly related to frequency according to at least one controllable parameter.
摘要翻译：在一个实施例中，一种操作网络分析仪的方法包括在网络分析仪的至少一个端口上施加刺激信号，以提供耦合到网络分析器的测试夹具内的被测器件（DUT）; 响应于所述网络分析器的至少一个端口上的所述刺激信号从所述DUT产生测量数据; 以及在频率范围内产生所述DUT的振幅响应，其中所述网络分析仪的端口扩展模块根据至少一个可控参数以与频率非线性相关的方式自动对所述振幅响应应用损耗补偿。

5. 发明授权

US06952209B2 Variable scaled graphical indicator to display dynamic data 失效
标题翻译：可变比例图形指示器显示动态数据
公开(公告)号：US06952209B2
公开(公告)日：2005-10-04
申请号：US09894251
申请日：2001-06-27
申请人： Johan Ericsson , Dara Sariaslani , Joyjeet Bhowmik , Joel Dunsmore
发明人： Johan Ericsson , Dara Sariaslani , Joyjeet Bhowmik , Joel Dunsmore
IPC分类号： G06F3/033 , G06F3/048 , G06T11/20
CPC分类号： G06F3/04847
摘要： A graphical indicator to assist a user in adjusting the value of a parameter to a target value. The graphical indicator has target value indicia that represents a target value of the parameter, and measured value indicia that represents a measured value of the parameter. A change in a measured value of the parameter relative to the target value is represented by a first corresponding amount of movement of the measured value indicia relative to the target value indicia when the measured value is within a first span of parameter values, and a second, different corresponding amount of movement of the measured value indicia relative to the target value indicia when the measured value is within a second span of parameter values. The graphical indicator provides increased sensitivity to changes in the measured value of the parameter as the measured value becomes closer to the target value of the parameter.
摘要翻译：帮助用户将参数值调整为目标值的图形指示器。图形指示器具有表示参数的目标值的目标值标记，以及表示参数的测量值的测量值标记。参数相对于目标值的测量值的变化由当测量值在参数值的第一范围内时的测量值标记相对于目标值标记的第一对应量的移动表示，第二个，当测量值在参数值的第二跨度内时，测量值标记相对于目标值标记的不同相应的移动量。当测量值越接近参数的目标值时，图形指示器将提高对参数测量值变化的敏感度。

6. 发明授权

US07088087B2 Network analyzer including automatic port extension calibration and method of operation 有权
标题翻译：网络分析仪，包括自动端口扩展校准和操作方法
公开(公告)号：US07088087B2
公开(公告)日：2006-08-08
申请号：US10939670
申请日：2004-09-13
申请人： Joel Dunsmore
发明人： Joel Dunsmore
IPC分类号： G01D18/00
CPC分类号： G01R35/005
摘要： In one embodiment, a method of automatically calibrating a network analyzer for measuring devices under test (DUTs) using a test fixture comprises generating a stimulus signal on a respective port that is coupled to the test fixture; measuring reflection of the stimulus signal on the respective port to generate measurement data, wherein the measurement data reflects a phase response of the test fixture; processing the measurement data to compensate for ripples generated by impedance mismatch at a coupling associated with the network analyzer and the test fixture; and adjusting a port extension setting of the network analyzer according to the processing.
摘要翻译：在一个实施例中，使用测试夹具自动校准用于测量被测设备（DUT）的网络分析仪的方法包括：在耦合到测试夹具的相应端口上产生刺激信号; 测量相应端口上的刺激信号的反射以产生测量数据，其中测量数据反映测试夹具的相位响应; 处理测量数据以补偿在与网络分析仪和测试夹具相关联的耦合处由阻抗失配产生的波纹; 并根据处理调整网络分析仪的端口扩展设置。

7. 发明授权

US07054780B2 Network analyzer applying loss compensation using port extensions and method of operation 失效
公开(公告)号：US07054780B2
公开(公告)日：2006-05-30
申请号：US10939861
申请日：2004-09-13
申请人： Joel Dunsmore , Doug Bender , David Blackham
发明人： Joel Dunsmore , Doug Bender , David Blackham
IPC分类号： G06F19/00
CPC分类号： G01R35/005 , G01R27/28
摘要： In one embodiment, a method of operating a network analyzer, comprises applying a stimulus signal on at least one port of the network analyzer for provision to a device under test (DUT) within a test fixture coupled to the network analyzer; generating measurement data from the DUT in response to the stimulus signal on at least one port of the network analyzer; and generating an amplitude response of the DUT across a frequency range, wherein a port extension module of the network analyzer automatically applies loss compensation to the amplitude response in a manner that is non-linearly related to frequency according to at least one controllable parameter.

8. 发明申请

US20060226856A1 VNA and method for addressing transmission line effects in VNA measurement data 有权
公开(公告)号：US20060226856A1
公开(公告)日：2006-10-12
申请号：US11093456
申请日：2005-03-30
申请人： Kenneth Wong , David Blackham , Joel Dunsmore
发明人： Kenneth Wong , David Blackham , Joel Dunsmore
IPC分类号： G01R27/28
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.

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