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1. 发明授权

US10003453B1 Phase synchronization of measuring instruments using free space transmission 有权
公开(公告)号：US10003453B1
公开(公告)日：2018-06-19
申请号：US15612945
申请日：2017-06-02
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： H04B10/00 , H04L7/00 , H04B10/079 , H04B10/112 , H04B10/40 , H04L7/033 , H04B10/071 , H04L7/04
CPC分类号： H04B10/40 , H04B10/1123 , H04L1/248 , H04L7/0008
摘要： A system for measuring electrical characteristics of a device under test (DUT) includes a measuring instrument adapted to be connected with the DUT for transmitting tests signals to the DUT, a receiver adapted to be connected with the DUT and arranged remote from the measuring instrument, an optical transceiver having a first coupler electrically connectable with the measuring instrument and a second coupler electrically connectable with the receiver, and a first and second free space transceivers connected to respective couplers by fiber optic cable. The measuring instrument includes a clock signal generated from a synchronization signal. The synchronization signal is converted to an optical signal by the optical transceiver and transmitted from the first free space transceiver to the second free space transceiver. The second coupler converts the optical signal to the synchronization signal and a clock signal of the receiver is locked to the synchronization signal.

2. 发明授权

US09210598B1 Systems and methods for measuring passive intermodulation (PIM) and return loss 有权
标题翻译：测量被动互调（PIM）和回波损耗的系统和方法
公开(公告)号：US09210598B1
公开(公告)日：2015-12-08
申请号：US13828379
申请日：2013-03-14
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： H04B17/00 , G01R19/00 , G01R31/08 , G01R27/28 , H04W24/04 , G01R31/11 , G01R27/32 , H04W24/00 , G01R1/20 , H02H1/00
CPC分类号： H04W24/04 , G01R1/203 , G01R19/0007 , G01R19/0092 , G01R23/16 , G01R23/20 , G01R27/28 , G01R27/32 , G01R31/11 , H02H1/0015 , H04B3/46 , H04B17/0085 , H04B17/23 , H04B17/29 , H04W24/00
摘要： An embodiment of a low power system for measuring passive intermodulation (PIM) includes a port, a test signal source, a dielectric frequency domain multiplexer and a receiver. The test signal source provides a test signal including two tones each capable of producing a signal at the test port of amplitude +30 decibels referenced to one milliwatt (dBm) or less. The dielectric frequency domain multiplexer connected with the port and the test signal source and is adapted to multiplex the test signal provided by the test signal source and a measurement signal obtained at the port. The receiver receives the multiplexed measurement signal from the dielectric frequency domain multiplexer and provides a signal indicative of PIM.
摘要翻译：用于测量无源互调（PIM）的低功率系统的实施例包括端口，测试信号源，介质频域复用器和接收器。测试信号源提供包括两个音调的测试信号，每个音调能够以参考一毫瓦（dBm）或更小的振幅+30分贝的测试端口产生信号。与端口连接的电介质频域多路复用器和测试信号源，适用于复用由测试信号源提供的测试信号和在端口获得的测量信号。接收机从电介质频域多路复用器接收复用的测量信号，并提供指示PIM的信号。

3. 发明授权

US08903324B1 Passive intermodulation (PIM) distance-to-fault analyzer and method to resolve distance-to-fault within a constrained receive band 有权
标题翻译：被动互调（PIM）距离故障分析仪和解决受限接收频段内的故障距离的方法
公开(公告)号：US08903324B1
公开(公告)日：2014-12-02
申请号：US13625634
申请日：2012-09-24
申请人： Anritsu Company
发明人： Donald Anthony Bradley
IPC分类号： H04B17/00
CPC分类号： H04B17/345 , H04B17/23 , H04B17/27
摘要： An embodiment of a method in accordance with the present invention for determining a distance to a source of passive intermodulation (PIM) in a radio frequency (RF) transmit/receive system comprises a two step process. As a first step, a first and second signal with frequencies in a transmit band are generated at a first power and a third order harmonic signal generated by a source of PIM within the system is obtained in the receive band. If the magnitude of the PIM exceeds a noise threshold, a second step is performed. The second step includes generating a third and fourth signal at a second power higher than the first power to obtain a higher order harmonic signal generated by the source of PIM. The PIM magnitude and a distance to the source of the PIM are calculated using the higher order harmonic signal.
摘要翻译：根据本发明的用于确定到无线电频率（RF）发射/接收系统中的被动互调源的距离的距离的方法的实施例包括两步过程。作为第一步骤，在第一功率下产生具有发射频带中的频率的第一和第二信号，并且在接收频带中获得由系统内的PIM源产生的三阶谐波信号。如果PIM的幅度超过噪声阈值，则执行第二步骤。第二步骤包括以比第一功率高的第二功率产生第三和第四信号，以获得由PIM源产生的高次谐波信号。使用较高次谐波信号计算PIM幅度和到PIM源的距离。

4. 发明授权

US10365345B1 Calibration device for use with measurement instruments 有权
公开(公告)号：US10365345B1
公开(公告)日：2019-07-30
申请号：US15368433
申请日：2016-12-02
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： G01R35/00 , H04B1/40
摘要： A calibration device adapted to be used with a measurement instrument includes a controller, two or more ports, two or more power measurement circuits each connectable with one of the two or more ports, and a non-transitory computer readable storage medium accessible to the controller within which characterization data related to the two or more ports is storable. The calibration device is adapted to be connected with the measurement instrument via a data bus to transmit data and receive commands between the controller and the measurement instrument. The two or more ports are adapted to be interchangeably connectable with ports of the measurement instrument. When the ports of the measurement instrument are connected with the two or more ports of the calibration device and a signal is transmitted by the measurement instrument to the calibration device, a connection configuration between the measurement instrument and the calibration device can be determined based on a detection of power at the two or more power measurement circuits.

5. 发明授权

US10064317B1 High isolation shield gasket and method of providing a high isolation shield gasket 有权
公开(公告)号：US10064317B1
公开(公告)日：2018-08-28
申请号：US15336685
申请日：2016-10-27
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley , Anthony Alan Vega , Somesh M. Wadhwa
IPC分类号： H05K9/00
CPC分类号： H05K9/0015 , H05K9/0037 , H05K9/0049
摘要： In accordance with an embodiment, a method of providing a gasket on an electromagnetic interference (EMI) shield adapted to isolate a plurality of components of a measurement instrument includes obtaining a shield bottom of the EMI shield, cleaning the shield bottom, plugging threaded holes within the shield bottom so that threads of the threaded holes are substantially unexposed, applying a gasket layer to the shield bottom, and unplugging the threaded holes so that the threads are exposed.

6. 发明授权

US09588212B1 Method of calibrating a measurement instrument for determining direction and distance to a source of passive intermodulation (PIM) 有权
标题翻译：校准用于确定与被动互调源（PIM）的方向和距离的测量仪器的方法
公开(公告)号：US09588212B1
公开(公告)日：2017-03-07
申请号：US14022450
申请日：2013-09-10
申请人： Anritsu Company
发明人： Donald Anthony Bradley
IPC分类号： G01R35/00
CPC分类号： G01R35/005 , G01R23/20 , G01R31/001 , H04B17/11 , H04B17/21
摘要： A method of calibrating a passive intermodulation (PIM) measurement device configured to transmit radio frequency (RF) signals and receive PIM signals using a directional antenna includes arranging the PIM measurement device connected to the directional antenna so that the directional antenna is configured to transmit an RF signal having a substantially unobstructed boresight axis, transmitting the RF signal, and obtaining a PIM measurement using the PIM measurement device. The PIM measurement device can then be calibrated based on the obtained PIM measurement.
摘要翻译：校准被配置为使用定向天线发送射频（RF）信号和接收PIM信号的无源互调（PIM）测量装置的方法包括布置连接到定向天线的PIM测量装置，使得定向天线被配置为发送 RF信号具有基本上无阻碍的视轴，发射RF信号，并使用PIM测量装置获得PIM测量。然后可以基于获得的PIM测量来校准PIM测量装置。

7. 发明授权

US09176174B1 Systems and methods for simultaneously measuring forward and reverse scattering parameters 有权
标题翻译：同时测量正向和反向散射参数的系统和方法
公开(公告)号：US09176174B1
公开(公告)日：2015-11-03
申请号：US14213171
申请日：2014-03-14
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley , Karam Michael Noujeim , Jon S. Martens
IPC分类号： G01R27/28 , G01R31/00 , G01R31/319
CPC分类号： G01R27/28 , G01R29/26 , G01R31/31924
摘要： A system adapted to measure electrical performance of a device under test (DUT) having two or more ports includes a plurality of signal sources synchronized and configured to generated signals simultaneously, a plurality of first signal paths to obtain transmitted and reflected signals from the DUT, a plurality of second signal paths to obtain incident signals from the signal sources, and a receiver for receiving the reflected, transmitted and incident signals obtained at the first signal paths and the second signal paths. The receiver is adapted to separate the reflected and the transmitted signals obtained from each of the first signal paths. The signal sources are configured to each generate a signal having a frequency offset from each of the others of the signal sources by a known frequency delta.
摘要翻译：一种适于测量具有两个或多个端口的被测设备（DUT）的电气性能的系统包括同步并被配置为同时产生信号的多个信号源，多个第一信号路径以从DUT获得发射和反射的信号，多个第二信号路径，用于从信号源获得入射信号，以及接收器，用于接收在第一信号路径和第二信号路径处获得的反射，发射和入射信号。接收器适于分离从每个第一信号路径获得的反射信号和发射信号。信号源被配置为每个通过已知的频率增量产生具有来自信号源中的每一个的频率偏移的信号。

8. 发明授权

US10116432B1 Real-time phase synchronization of a remote receiver with a measuring instrument 有权
公开(公告)号：US10116432B1
公开(公告)日：2018-10-30
申请号：US15857991
申请日：2017-12-29
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： H04B10/00 , H04L7/00 , H04L5/14 , H04B10/079
摘要： A measuring instrument for measuring electrical characteristics of a device under test (DUT) includes a signal generator for generating a synchronization signal transmittable to a receiver and a phase shifter. The measuring instrument is configured to receive a retransmission of the synchronization signal from the receiver. The phase shifter configured to receive the synchronization signal from the signal generator and the retransmission of the synchronization signal from the receiver and shift a phase of the synchronization signal so that pulse edges of the synchronization signal are aligned at the measuring instrument and the receiver.

9. 发明授权

US09964585B1 Exact phase synchronization of a remote receiver with a measurement instrument 有权
公开(公告)号：US09964585B1
公开(公告)日：2018-05-08
申请号：US15351261
申请日：2016-11-14
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： G01R27/02 , G01R31/28 , G01R25/00
CPC分类号： H04L7/0075 , G01R25/00 , G01R27/00 , G01R31/282 , H03L7/07 , H03L7/0812 , H03L7/18 , H04B10/0795 , H04B10/25 , H04L5/14 , H04L7/0331
摘要： A measurement instrument for measuring electrical characteristics of a device under test (DUT) includes a synchronization signal generator, a coarse phase detection counter and a fine phase detection counter. The synchronization signal generator is connectable with a receiver via a fiber optic cable and a duplexer configured to transmit a synchronization signal from the measurement instrument to the receiver and retransmit the received synchronization signal from the receiver to the measurement instrument. The coarse phase detection counter and the fine phase detection counter are configured to determine one or both of a distance from the receiver to the measurement instrument and a phase shift in the synchronization signal between the receiver and the measurement instrument.

10. 发明授权

US09768892B1 Pulse modulated passive intermodulation (PIM) measuring instrument with reduced noise floor 有权
公开(公告)号：US09768892B1
公开(公告)日：2017-09-19
申请号：US14673408
申请日：2015-03-30
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： H04B17/00 , G01R31/00 , G01R31/11 , H04B17/17 , H04B17/29 , G01R31/12 , G01R31/08
CPC分类号： H04B17/0085 , G01R31/001 , G01R31/088 , G01R31/11 , G01R31/1272 , H04B17/17 , H04B17/26 , H04B17/29
摘要： In an embodiment, a method for measuring passive intermodulation (PIM) associated with a device under test (DUT) includes generating a test signal using a measuring instrument and obtaining measurements of PIM for the DUT. The test signal comprises two or more tones each amplified to a target output power by a respective amplifier according to a duty cycle. Measurements are obtained by the measuring instrument during an active portion of each duty cycle over a sweep of frequencies. PIM is calculated for the DUT by averaging a plurality of measurements obtained for each frequency from the sweep of frequencies. The duty cycle is determined based on the target output power.

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