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21. 发明授权

US10200021B1 Synchronous N pulse burst generator 有权
公开(公告)号：US10200021B1
公开(公告)日：2019-02-05
申请号：US15339490
申请日：2016-10-31
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： H03K5/14 , H03K19/20 , H03K5/15 , H03K5/00
摘要： In accordance with an embodiment, a synchronous N pulse burst generator includes an input for an intermediate frequency trigger signal and a signal path extending from the input. The signal path includes a series of N AND gates and an OR gate. Each AND gate is arranged to receive two inputs from the signal path. The signal path introduces a time delay between the two inputs received by each AND gate. A second input of the two inputs is inverted. The signal path introduces the time delay between successive AND gates from the series of N AND gates. An OR gate receives outputs from the series of N AND gates and outputs an A/D clock signal.

22. 发明授权

US10006952B1 System and method for reducing the effects of spurs on measurements using averaging with specific null selection 有权
公开(公告)号：US10006952B1
公开(公告)日：2018-06-26
申请号：US15417119
申请日：2017-01-26
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： G01R27/02 , G01R27/28 , G01R35/00 , G06F1/00 , G01R1/00
CPC分类号： G01R27/28 , G01R1/00 , G01R35/00 , G06F1/00 , G06F2101/00
摘要： A method of eliminating spurs in measurements of an electrical response of a device under test (OUT) obtained uses a measurement instrument including a mixer and a receiver. The measurement instrument is configured to generate, via the mixer, an intermediate frequency (IF) signal for use by the receiver from a radio frequency (RF) signal and a local oscillator (LO) signal. Input is received from a user at the measurement instrument and includes start frequency and end frequency. Parameters for a frequency sweep are generated based on the input. A measurement for each frequency of the frequency sweep is calculated using averaging of a plurality of samples obtained at that frequency. Frequencies are identified within the frequency sweep at which spurs will occur due to the measurement instrument. The parameters for a frequency of the frequency sweep at which a spur will occur are modified so that a null for a measurement at the frequency falls on the spur.

23. 发明授权

US09967085B1 Synchronization of a remote wide band receiver using a narrow band low frequency signal 有权
公开(公告)号：US09967085B1
公开(公告)日：2018-05-08
申请号：US15351225
申请日：2016-11-14
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： H04B10/00 , H04L7/00 , H04B10/079 , H04L7/033
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 configured to generate a synchronization signal transmittable from the measurement instrument to a receiver. The synchronization generator comprises a phase-locked loop (PLL) that locks the phase of the LO signal to the synchronization signal. The A/D clock signal is generated from the synchronization signal.

24. 发明授权

US09860054B1 Real-time phase synchronization of a remote receiver with a measurement instrument 有权
公开(公告)号：US09860054B1
公开(公告)日：2018-01-02
申请号：US15351291
申请日：2016-11-14
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： H04B10/00 , H04L7/00 , H04B10/079 , H04L5/14
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 for generating a synchronization signal transmittable to a receiver, a voltage controlled phase shifter (VCPS) connected with the synchronization signal generator and a phase-to-voltage converter configured to drive the VCPS. The synchronization signal is transmitted via a duplexer configured to transmit the synchronization signal from the measurement instrument to the receiver via a fiber optic cable and retransmit the received synchronization signal from the receiver to the measurement instrument via the fiber optic cable. The phase-to-voltage converter receives as inputs the synchronization signal input to the VCPS, the synchronization signal output from the VCPS and the retransmitted synchronization signal received at the measurement instrument from the receiver. An output of the phase-to-voltage converter is provided as input to the VCPS.

25. 发明授权

US09366707B1 Devices, systems, and methods for sychronizing a remote receiver to a master signal for measuring scattering parameters 有权
标题翻译：用于将远程接收机同步到主信号以测量散射参数的设备，系统和方法
公开(公告)号：US09366707B1
公开(公告)日：2016-06-14
申请号：US13957921
申请日：2013-08-02
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley
IPC分类号： G01R27/04
CPC分类号： G01R27/04 , G01R27/32
摘要： A reflectometer for use in measuring scattering (S-) parameters for a device under test (DUT) includes a test port, a radio frequency (RF) output signal source, and a local oscillator (LO) signal. The LO signal is used to downconvert the RF output signal to an incident IF signal. The reflectometer is useable as a master reflectometer with a slave reflectometer such that the master reflectometer provides the slave reflectometer with a synchronization signal to synchronize signals generated by the second reflectometer to the incident IF signal. Phase and magnitude of transmission S-parameters of the DUT are measurable when the reflectometer is used as the master reflectometer in combination with the slave reflectometer. The master reflectometer and the slave reflectometer can be reconfigurable to reverse the master/server roles of the reflectometers.
摘要翻译：用于测量被测设备（DUT）的散射（S-）参数的反射计包括测试端口，射频（RF）输出信号源和本地振荡器（LO）信号。 LO信号用于将RF输出信号下变频到入射的IF信号。反射计可用作具有从属反射计的主反射计，使得主反射计向从属反射计提供同步信号，以将由第二反射计产生的信号与入射的IF信号同步。当使用反射计作为主反射计与从属反射计时，DUT的传输相位和幅度S参数是可测量的。主反射计和从属反射计可以重构，以反转反射计的主/服务器角色。

26. 发明授权

US09239371B1 High power input protection for signal measurement devices 有权
标题翻译：用于信号测量设备的大功率输入保护
公开(公告)号：US09239371B1
公开(公告)日：2016-01-19
申请号：US14064967
申请日：2013-10-28
申请人： Anritsu Company
发明人： Donald Anthony Bradley
IPC分类号： G01S7/03 , G01S7/02
CPC分类号： G01S7/032 , H03G11/02
摘要： A protection device usable with a signal measurement device to limit power level of radio frequency (RF) signals propagated to the signal measurement device can include a direct current (DC) block capacitor, a variable impedance limiter, and a detector. The variable impedance limiter includes a PIN diode electrically connected with a primary signal path of the protection device along a limiter signal path. The detector includes a Schottky detector diode and a limiting resistor electrically connected with the primary signal path along a detector signal path. The detector is configured to generate a DC bias current to adjust resistance of the variable impedance limiter in response to an RF signal.
摘要翻译：可以与信号测量装置一起使用以限制传播到信号测量装置的射频（RF）信号的功率电平的保护装置可以包括直流（DC）块电容器，可变阻抗限制器和检测器。可变阻抗限制器包括沿着限幅信号路径与保护装置的主信号路径电连接的PIN二极管。检测器包括肖特基检测器二极管和限制电阻器，沿着检测器信号路径与主信号路径电连接。检测器被配置为产生DC偏置电流，以响应于RF信号来调节可变阻抗限制器的电阻。

27. 发明授权

US09176180B1 Method for determining the distance to and magnitude of one or more passive intermodulation (PIM) source 有权
标题翻译：确定一个或多个无源互调（PIM）源的距离和幅度的方法
公开(公告)号：US09176180B1
公开(公告)日：2015-11-03
申请号：US14063958
申请日：2013-10-25
申请人： ANRITSU COMPANY
发明人： Donald Anthony Bradley , Alan Charles Witty
IPC分类号： G01R31/08 , G01R31/11
CPC分类号： G01R31/11 , H04B17/0085 , H04B17/103 , H04B17/27
摘要： A Passive Intermodulation (PIM) measurement circuit enables making forward and reverse PIM measurements on any 1 port (reflection) or 2 port (transmission) device with the ability to determine in distance where individual PIM impairments are located as well as their magnitude. The PIM measurement circuit includes two frequency sources that are provided through a combiner for a CW characterization of the PIM circuit. To enable distance determination, an FM measurement is created by using a saw tooth offset sweep generator attached to one of the two frequency sources. With down conversion and processing of signals from the PIM impairments, the FM signal provides a frequency variation that is converted using a Fourier transform or spectrum analysis for separation of frequencies, enabling determination of the distance of the PIM sources as well as their magnitudes.
摘要翻译：无源互调（PIM）测量电路可在任何1端口（反射）或2端口（传输）设备上进行正向和反向PIM测量，具有确定各个PIM损伤的距离以及其大小的能力。 PIM测量电路包括通过组合器提供的用于PIM电路的CW表征的两个频率源。为了启用距离确定，通过使用连接到两个频率源之一的锯齿偏移扫描发生器来创建FM测量。通过对来自PIM损伤的信号的下变频和处理，FM信号提供使用傅里叶变换或频谱分析转换的频率变化，用于分离频率，从而能够确定PIM源的距离及其幅度。

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