-
公开(公告)号：US20240204402A1
公开(公告)日：2024-06-20
申请号：US18084117
申请日：2022-12-19
Applicant: Keysight Technologies, Inc.
Inventor： Joel P. Dunsmore , Tuan Tang
Abstract: An antenna array controller is configured to measure a magnitude and phase of each of a set of antenna array elements, and compensate for leakage of other elements of the set of array elements. The leakage may be compensated for by one or more mechanisms including phase cancellation by row of antenna array elements, programmatic cancellation via a single offsetting antenna array element of the antenna array elements, and deembedding array leakage by subtracting the array leakage from the measured data.
-
公开(公告)号：US11209471B2
公开(公告)日：2021-12-28
申请号：US16863595
申请日：2020-04-30
Applicant: Keysight Technologies, Inc.
Inventor： Joel P. Dunsmore , Gen Tokumoto , Yasuaki Komatsu
IPC: G01R35/00 , G01R27/28 , G01R27/02 , G01R27/26 , G01R31/319
Abstract: A measurement system and a method of removing effects of instability of the measurement system while measuring at least one S-parameter of a device under test (DUT) are provided. The method includes initially determining a characteristic of the measurement system, including identifying a location of an instability in the time domain of the measurement system; determining a change of the characteristic of the measurement system while connected to the DUT; and compensating for the determined change of the characteristic of the measurement system while connected to the DUT by removing effects of the determined change on measurements of the at least one S-parameter of the DUT.
-
公开(公告)号：US20240204420A1
公开(公告)日：2024-06-20
申请号：US18084231
申请日：2022-12-19
Applicant: Keysight Technologies, Inc.
Inventor： Joel P. Dunsmore , Tuan Tang
Abstract: A system for measuring and calibrating an antenna array having a plurality of antenna array elements each configured to individually radiate signals is described. The system includes an antenna array controller comprising a memory that stores instructions and a processor that executes the instructions. When executed by the processor, the instructions cause the system to: measure a magnitude and phase of each of a set of antenna array elements; and compensate for leakage of other antenna array elements of the set of antenna array elements.
-
公开(公告)号：US09086376B1
公开(公告)日：2015-07-21
申请号：US14156401
申请日：2014-01-15
Applicant: Keysight Technologies, Inc.
Inventor： Joel P. Dunsmore , Ning Cheng , Ya-Ping Zhang
IPC: G01N21/47
CPC classification number: G01N21/47 , G01R27/32 , G01R35/005
Abstract: Scattering parameters of a test fixture having a first port and a second port are measured by providing a test instrument; outputting a one-port reflection test signal from the test instrument to the first port with the second port terminated in a reflective termination having a known reflection coefficient, and receiving at the test instrument a one-port reflection measurement signal from the first port; subjecting the one-port reflection measurement signal to first time gating to generate a first time-gated measurement signal, the first time gating using a first gating function temporally disposed about the first port; subjecting the one-port reflection measurement signal to second time gating to generate a second time-gated measurement signal, the second time gating using a second gating function temporally disposed about the termination; and deriving the scattering parameters from the first time-gated measurement signal and the second time-gated measurement signal.
Abstract translation: 通过提供测试仪器来测量具有第一端口和第二端口的测试夹具的散射参数; 将来自所述测试仪器的单端口反射测试信号输出到所述第一端口，其中所述第二端口以具有已知反射系数的反射端接端接，并且在所述测试仪器处接收来自所述第一端口的单端口反射测量信号; 对所述单端口反射测量信号进行第一次门控以产生第一时间门控测量信号，所述第一时间门控使用临时设置在所述第一端口周围的第一选通功能; 对所述单端口反射测量信号进行第二时间选通以产生第二时间门控测量信号，所述第二时间选通使用临时设置在所述终端周围的第二选通功能; 并从第一时间门控测量信号和第二时间门控测量信号得出散射参数。
-
公开(公告)号：US09678123B2
公开(公告)日：2017-06-13
申请号：US14710476
申请日：2015-05-12
Applicant: Keysight Technologies, Inc.
Inventor： Joel P. Dunsmore , Jean-Pierre Teyssier , Jad Faraj , James B. Kerr
CPC classification number: G01R23/16 , G01R23/163
Abstract: A radio frequency (RF) measurement system acting as a spectrum analyzer and a method of operating the same eliminates image signals from a detected input RF spectrum. The method includes determining at least three local oscillator (LO) frequencies; determining LO offsets between the LO frequencies; and mixing the LO frequencies with the input RF spectrum to provide corresponding intermediate frequency (IF) signals having an IF bandwidth, where at least one of the IF signals has the input RF spectrum mixed to a different portion of the IF bandwidth than at least one other of the IF signals, providing overlapping coverage. The method further includes acquiring ADC time records for the IF signals; performing Fourier transforms (FTs) on the ADC time records to provide IF spectrums; and detecting RF responses from the IF spectrums to determine an RF response trace corresponding to the input RF spectrum.
-
Patent Agency Ranking
6.发明授权Method and system for extending dynamic range of receiver by compensating for non-linear distortion 有权通过补偿非线性失真来扩展接收机的动态范围的方法和系统公开(公告)号：US09595986B2
公开(公告)日：2017-03-14
申请号：US14831454
申请日：2015-08-20
Applicant: Keysight Technologies, Inc.
Inventor： Joel P. Dunsmore
CPC classification number: H04B1/1027 , H04B17/17 , H04B17/21
Abstract: A method is provided for extending dynamic range of a receiver. The method includes receiving a known input signal at the receiver, detecting a first output signal in response to the known input signal, and determining a correction function based on the first output signal and the known input signal for compensating for non-linear distortion introduced by the receiver. The method further includes receiving an unknown input signal at the receiver, detecting a second output signal in response to the unknown input signal, and applying the correction function to the second output signal in a time domain to recover the unknown input signal.
Abstract translation: 提供了一种用于扩展接收机的动态范围的方法。 该方法包括在接收机处接收已知的输入信号，响应已知的输入信号检测第一输出信号，以及基于第一输出信号和已知输入信号确定校正功能，以补偿由 收件人。 该方法还包括在接收机处接收未知输入信号，响应于未知输入信号检测第二输出信号，以及在时域中对第二输出信号应用校正功能以恢复未知输入信号。
-
公开(公告)号：US20190064236A1
公开(公告)日：2019-02-28
申请号：US15690934
申请日：2017-08-30
Applicant: Keysight Technologies, Inc.
Inventor： Jan Verspecht , Keith F. Anderson , Joel P. Dunsmore
Abstract: Nonlinear distortion of a device under test (DUT) is detected by obtaining measurements of a multi-tone input signal from a signal generator to a DUT, to obtain a measured multi-tone input signal. Measurements are also obtained of a multi-tone output signal from the DUT that is generated based on the multi-tone input signal, to obtain a measured multi-tone output signal. A correlated part of the measured multi-tone output signal that is correlated with the measured multi-tone input signal is determined insofar as the correlated part corresponds to a frequency response function of the DUT.
-
公开(公告)号：US10145930B1
公开(公告)日：2018-12-04
申请号：US14871384
申请日：2015-09-30
Applicant: Keysight Technologies, Inc.
Inventor： Loren C. Betts , Joel P. Dunsmore
Abstract: A method is provided for calibrating a multiport measurement system having a local oscillator and a respective receiver associated with each port. The method includes performing a relative calibration by vector calibrating ports of the multiport measurement system and generating relative error-correction terms for the ports. Further, the method includes performing an absolute calibration by calibrating an amplitude response of the receivers of the multiport measurement system, and removing a local oscillator unknown phase response using a single phase reference coupled to a vector calibrated port and transferring cross-frequency phase correction terms from this vector calibrated port to the receivers of the other vector calibrated ports.
-
公开(公告)号：US10042029B2
公开(公告)日：2018-08-07
申请号：US13863721
申请日：2013-04-16
Applicant: Keysight Technologies, Inc.
Inventor： Joel P. Dunsmore , Johan Ericsson
Abstract: A method of calibrating a test instrument comprises determining a first response of a calibration device on the test instrument over a first set of operating ranges, determining a derived second response of the calibration device on the test instrument over a second set of operating ranges based on the first response, measuring the second response of the calibration device on the test instrument over the second set of operating ranges, and determining correction factors of the test instrument for the second set of operating ranges based on a comparison between the measured second response and the derived second response.
-
10.发明申请METHOD AND SYSTEM FOR EXTENDING DYNAMIC RANGE OF RECEIVER BY COMPENSATING FOR NON-LINEAR DISTORTION 有权通过补偿非线性失真来扩展接收机的动态范围的方法和系统公开(公告)号：US20160087660A1
公开(公告)日：2016-03-24
申请号：US14831454
申请日：2015-08-20
Applicant: Keysight Technologies, Inc.
Inventor： Joel P. Dunsmore
CPC classification number: H04B1/1027 , H04B17/17 , H04B17/21
Abstract: A method is provided for extending dynamic range of a receiver. The method includes receiving a known input signal at the receiver, detecting a first output signal in response to the known input signal, and determining a correction function based on the first output signal and the known input signal for compensating for non-linear distortion introduced by the receiver. The method further includes receiving an unknown input signal at the receiver, detecting a second output signal in response to the unknown input signal, and applying the correction function to the second output signal in a time domain to recover the unknown input signal.
Abstract translation: 提供了一种用于扩展接收机的动态范围的方法。 该方法包括在接收机处接收已知的输入信号，响应已知的输入信号检测第一输出信号，以及基于第一输出信号和已知输入信号确定校正功能，以补偿由 收件人。 该方法还包括在接收机处接收未知输入信号，响应于未知输入信号检测第二输出信号，以及在时域中对第二输出信号应用校正功能以恢复未知输入信号。
-
-
-
-
-
-
-
-
-
Search Results
16
records
(took 0.015 seconds)
