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1. 发明授权

US09590583B2 Alternating current (AC) coupler for wideband AC signals and related methods 有权
标题翻译：用于宽带交流信号的交流（AC）耦合器及相关方法
公开(公告)号：US09590583B2
公开(公告)日：2017-03-07
申请号：US14753958
申请日：2015-06-29
申请人： Agilent Technologies, Inc.
发明人： Shahrzad Jalali Mazlouman , David Deford
IPC分类号： H01P3/08 , H03H7/38 , H01J49/40 , G01N27/62 , H03H7/00 , H03H7/01 , H01P11/00
CPC分类号： H03H7/383 , G01N27/622 , H01J49/40 , H01P3/06 , H01P3/08 , H01P11/001 , H03H7/004 , H03H7/0123 , H03H7/0138
摘要： An AC coupler for transmitting high-frequency components of a wideband signal includes a signal conductor and a shielding structure arranged as a transmission line. The signal conductor includes a conductive element and a capacitor configured to block direct current (DC) components of the wideband signal while transmitting high-frequency alternating current (AC) components of the wideband signal. The shielding structure is configured for conducting at least the AC components of the wideband signal while confining electric fields and currents in the shielding structure substantially to a region proximate to the signal conductor. The shielding structure has a width substantially greater than a width of the signal conductor. The difference between the shielding structure width and the signal conductor width may be substantially greater than an offset distance between the signal conductor and the shielding structure.
摘要翻译：用于传输宽带信号的高频分量的AC耦合器包括布置为传输线的信号导体和屏蔽结构。信号导体包括导电元件和被配置为阻止宽带信号的直流（DC）分量同时传输宽带信号的高频交流（AC）分量的电容器。屏蔽结构被配置用于至少传导宽带信号的AC分量，同时将屏蔽结构中的电场和电流基本限制在靠近信号导体的区域。屏蔽结构的宽度明显大于信号导体的宽度。屏蔽结构宽度和信号导体宽度之间的差可以大大地大于信号导体和屏蔽结构之间的偏移距离。

2. 发明申请

US20230127124A1 DUAL FEEDBACK LOOP FOR PRECISION HIGH VOLTAGE POWER SUPPLY 有权
公开(公告)号：US20230127124A1
公开(公告)日：2023-04-27
申请号：US18069062
申请日：2022-12-20
申请人： AGILENT TECHNOLOGIES, INC.
发明人： David Deford
IPC分类号： H02M3/335 , H02M1/00
摘要： A high-voltage (HV) power supply outputs an output voltage based on a control signal produced by a dual analog/digital feedback loop. The control signal is determined at least in part by an error amplifier that receives a measurement signal, proportionally attenuated from the output voltage, and a digital-to-analog converter (DAC) output signal. An analog-to-digital converter (ADC) also receives the measurement signal and transmits it in digitized form to a digital processor. The digital processor calculates a digital DAC data signal based on the measurement signal, and on a digital set-point input signal corresponding to a set-point voltage value of the output voltage desired to be outputted from the high-voltage source. A DAC receives the DAC data signal and converts it to the DAC output signal transmitted to the error amplifier.

3. 发明授权

US11557974B2 Precision high voltage power supply with dual feedback loop 有权
公开(公告)号：US11557974B2
公开(公告)日：2023-01-17
申请号：US17242077
申请日：2021-04-27
申请人： Agilent Technologies, Inc.
发明人： David Deford
IPC分类号： H02M3/335 , H02M1/00
摘要： A high-voltage (HV) power supply outputs an output voltage based on a control signal produced by a dual analog/digital feedback loop. The control signal is determined at least in part by an error amplifier that receives a measurement signal, proportionally attenuated from the output voltage, and a digital-to-analog converter (DAC) output signal. An analog-to-digital converter (ADC) also receives the measurement signal and transmits it in digitized form to a digital processor. The digital processor calculates a digital DAC data signal based on the measurement signal, and on a digital set-point input signal corresponding to a set-point voltage value of the output voltage desired to be outputted from the high-voltage source. A DAC receives the DAC data signal and converts it to the DAC output signal transmitted to the error amplifier.

4. 发明申请

US20160380609A1 ALTERNATING CURRENT (AC) COUPLER FOR WIDEBAND AC SIGNALS AND RELATED METHODS 有权
标题翻译：用于宽带交流信号的替代电流（AC）耦合器及相关方法
公开(公告)号：US20160380609A1
公开(公告)日：2016-12-29
申请号：US14753958
申请日：2015-06-29
申请人： Agilent Technologies, Inc.
发明人： Shahrzad Jalali Mazlouman , David Deford
IPC分类号： H01P5/04 , H01J49/40 , G01N27/62 , H03H7/01 , H01P11/00 , H03H7/38 , H03H7/00
CPC分类号： H03H7/383 , G01N27/622 , H01J49/40 , H01P3/06 , H01P3/08 , H01P11/001 , H03H7/004 , H03H7/0123 , H03H7/0138
摘要： An AC coupler for transmitting high-frequency components of a wideband signal includes a signal conductor and a shielding structure arranged as a transmission line. The signal conductor includes a conductive element and a capacitor configured to block direct current (DC) components of the wideband signal while transmitting high-frequency alternating current (AC) components of the wideband signal. The shielding structure is configured for conducting at least the AC components of the wideband signal while confining electric fields and currents in the shielding structure substantially to a region proximate to the signal conductor. The shielding structure has a width substantially greater than a width of the signal conductor. The difference between the shielding structure width and the signal conductor width may be substantially greater than an offset distance between the signal conductor and the shielding structure.
摘要翻译：用于传输宽带信号的高频分量的AC耦合器包括布置为传输线的信号导体和屏蔽结构。信号导体包括导电元件和被配置为阻止宽带信号的直流（DC）分量同时传输宽带信号的高频交流（AC）分量的电容器。屏蔽结构被配置用于至少传导宽带信号的AC分量，同时将屏蔽结构中的电场和电流基本限制在靠近信号导体的区域。屏蔽结构的宽度明显大于信号导体的宽度。屏蔽结构宽度和信号导体宽度之间的差可以大大地大于信号导体和屏蔽结构之间的偏移距离。

5. 发明申请

US20210391869A1 PRECISION HIGH VOLTAGE POWER SUPPLY WITH DUAL FEEDBACK LOOP 有权
公开(公告)号：US20210391869A1
公开(公告)日：2021-12-16
申请号：US17242077
申请日：2021-04-27
申请人： Agilent Technologies, Inc.
发明人： David Deford
IPC分类号： H03M1/10 , H02M3/335 , H02M1/08 , H01J49/02
摘要： A high-voltage (HV) power supply outputs an output voltage based on a control signal produced by a dual analog/digital feedback loop. The control signal is determined at least in part by an error amplifier that receives a measurement signal, proportionally attenuated from the output voltage, and a digital-to-analog converter (DAC) output signal. An analog-to-digital converter (ADC) also receives the measurement signal and transmits it in digitized form to a digital processor. The digital processor calculates a digital DAC data signal based on the measurement signal, and on a digital set-point input signal corresponding to a set-point voltage value of the output voltage desired to be outputted from the high-voltage source. A DAC receives the DAC data signal and converts it to the DAC output signal transmitted to the error amplifier.

6. 发明申请

US20210074534A1 AC-Coupled System for Particle Detection 有权
公开(公告)号：US20210074534A1
公开(公告)日：2021-03-11
申请号：US16567105
申请日：2019-09-11
申请人： Agilent Technologies, Inc.
发明人： Richard C. Walker , David Deford , David Kaz
IPC分类号： H01J49/02
摘要： A system and method for detecting energetic particles include a detector onto which the particles are impinged. An output signal from the detector, indicative of the energy of the particles, is directed by an AC-coupler to a measurement device to determine particle characteristics such as mass and/or abundance. The detector is selectively couplable to positive or negative bias voltages, and in one embodiment is differentially biased to eliminate ringing due common-mode excitation. The AC-coupler has capacitively-coupled input and output terminals that are embedded in a transmission line structure including capacitances that in some embodiments serve as the sole energy storage component in order to reduce the effects of parasitic inductance found in conventional detection circuits. In some embodiments, a pulse compensation network is provided, to reduce undershoot and ringing due to remote installation of the AC-coupler caused by reflection of low frequency components blocked by the AC-coupler.

7. 发明申请

US20200035473A1 PRECISION HIGH VOLTAGE POWER SUPPLY UTILIZING FEEDBACK THROUGH RETURN SIDE OUTPUT 审中-公开
公开(公告)号：US20200035473A1
公开(公告)日：2020-01-30
申请号：US16432474
申请日：2019-06-05
申请人： Agilent Technologies, Inc.
发明人： David Deford
IPC分类号： H01J49/02 , H01J49/40
摘要： In one embodiment, a high voltage power supply includes a DC voltage input, a converter for converting a DC voltage at the DC voltage input to an AC voltage, a booster for boosting the AC voltage to a boosted AC voltage, a rectifier in DC isolation from the DC voltage input, the rectifier operable to convert the boosted AC voltage to a high DC voltage at an isolated rectifier output, a high voltage DC output for outputting the high DC voltage, a voltage control input, and an error circuit coupled to the voltage control input and operable to reduce variation in the high DC voltage by driving a return side of the isolated rectifier output in response to feedback based on the high DC voltage.

8. 发明授权

US11017992B2 AC-coupled system for particle detection 有权
公开(公告)号：US11017992B2
公开(公告)日：2021-05-25
申请号：US16567105
申请日：2019-09-11
申请人： Agilent Technologies, Inc.
发明人： Richard C. Walker , David Deford , David Kaz
IPC分类号： H01J49/02
摘要： A system and method for detecting energetic particles include a detector onto which the particles are impinged. An output signal from the detector, indicative of the energy of the particles, is directed by an AC-coupler to a measurement device to determine particle characteristics such as mass and/or abundance. The detector is selectively couplable to positive or negative bias voltages, and in one embodiment is differentially biased to eliminate ringing due common-mode excitation. The AC-coupler has capacitively-coupled input and output terminals that are embedded in a transmission line structure including capacitances that in some embodiments serve as the sole energy storage component in order to reduce the effects of parasitic inductance found in conventional detection circuits. In some embodiments, a pulse compensation network is provided, to reduce undershoot and ringing due to remote installation of the AC-coupler caused by reflection of low frequency components blocked by the AC-coupler.

9. 发明授权

US08890086B1 Ion detector response equalization for enhanced dynamic range 有权
标题翻译：离子探测器响应均衡，增强动态范围
公开(公告)号：US08890086B1
公开(公告)日：2014-11-18
申请号：US13920405
申请日：2013-06-18
申请人： Agilent Technologies, Inc.
发明人： Noah Goldberg , James L. Bertsch , David Deford
IPC分类号： H01J49/40 , G01T1/29
CPC分类号： H01J43/246 , G01T1/28 , H01J49/025
摘要： An ion detection system for detecting ions whose velocity varies during an operating cycle. The ion detection system includes a dynode electron multiplier (e.g., a microchannel plate (MCP)) having a bias voltage input, and a bias voltage source to apply a bias voltage to the bias voltage input of the dynode electron multiplier. With a fixed bias voltage applied to its bias voltage input, the dynode electron multiplier has a gain dependent on the velocity of ions incident thereon. The bias voltage applied by the bias voltage source to the bias voltage input of the dynode electron multiplier varies during the operating cycle to reduce the dependence of the gain of the dynode electron multiplier on the velocity of the ions incident thereon.
摘要翻译：一种离子检测系统，用于检测运行周期内速度变化的离子。离子检测系统包括具有偏置电压输入的倍增电极倍增器（例如，微通道板（MCP））和偏置电压源，以将偏置电压施加到倍增电子倍增器的偏置电压输入端。施加到其偏置电压输入端的固定偏置电压，倍增电子倍增器具有取决于入射在其上的离子的速度的增益。偏置电压源施加到倍增电极倍增器的偏置电压输入端的偏置电压在操作周期内变化，以减小倍增电极倍增器的增益对入射到其上的离子的速度的依赖性。

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