公开(公告)号：US10284154B1

公开(公告)日：2019-05-07

申请号：US15836191

申请日：2017-12-08

申请人： Agilent Technologies, Inc.

发明人： Michael Schoessow

IPC分类号： H03F3/191 ,  H03F1/30 ,  H03F3/343

摘要： A system for generating a radio frequency (RF) signal at a drive frequency and a high voltage. The system includes a RF amplifier to amplify the voltage of a drive signal having a selected RF frequency. The amplified drive signal is used to drive a resonator to generate the RF signal such that the resonant frequency is the same or substantially the same as the drive frequency. A resonance tuning controller compares the drive frequency and the resonant frequency. If the resonant frequency and drive frequency are different, a temperature changing element is controlled to either increase heat or decrease heat radiating toward a tuning component with a resonance parameter that varies with temperature. For example, the heat may change the capacitance of the tuning capacitor causing a change in the resonant frequency of the resonator.

公开(公告)号：US11342169B2

公开(公告)日：2022-05-24

申请号：US16842988

申请日：2020-04-08

申请人： Agilent Technologies, Inc.

发明人： Michael Schoessow

IPC分类号： H01J49/02 ,  H03F3/45 ,  H01J49/40 ,  H01J49/42

摘要： In one embodiment, a power source for providing high-voltage radio-frequency (RF) energy to an instrument such as a mass spectrometer includes an RF power amplifier having an output, an oscillating RF signal generator configured to provide first and second RF signals respectively oscillating at first and second frequencies to the RF power amplifier, and a step-up circuit for magnifying the RF power amplifier output. The step-up circuit includes an LC resonator network tuned to the first and second frequencies, and an output for providing the magnified voltage to a rod assembly of the mass spectrometer.

公开(公告)号：US20200328070A1

公开(公告)日：2020-10-15

申请号：US16842988

申请日：2020-04-08

申请人： Agilent Technologies, Inc.

发明人： Michael Schoessow

IPC分类号： H01J49/02 ,  H03F3/45 ,  H01J49/42 ,  H01J49/40

摘要： In one embodiment, a power source for providing high-voltage radio-frequency (RF) energy to an instrument such as a mass spectrometer includes an RF power amplifier having an output, an oscillating RF signal generator configured to provide first and second RF signals respectively oscillating at first and second frequencies to the RF power amplifier, and a step-up circuit for magnifying the RF power amplifier output. The step-up circuit includes an LC resonator network tuned to the first and second frequencies, and an output for providing the magnified voltage to a rod assembly of the mass spectrometer.

公开(公告)号：US20160091578A1

公开(公告)日：2016-03-31

申请号：US14501627

申请日：2014-09-30

申请人： Agilent Technologies, Inc.

发明人： Michael Schoessow

IPC分类号： G01R33/36 ,  G01R33/48

CPC分类号： G01R33/3614 ,  G01R33/3635

摘要： A radio frequency (RF) source signal is received at a first amplifier and amplified to a first power level over a wide frequency range, which may include frequencies effective for resonantly exciting nuclear magnetic resonance (NMR)-active nuclei. The amplified signal may be transmitted over a first path or a second path, which may be selected via a switch. When the first path is selected, the amplified signal is transmitted over the wide frequency range to a signal output. When the second path is selected, the amplified signal is received at a second amplifier, amplified to a second power level over a low frequency range, and transmitted to the signal output.

摘要翻译： 在第一放大器处接收射频（RF）源信号，并在宽频率范围内放大到第一功率电平，其可以包括对共振激发的核磁共振（NMR）活性核有效的频率。 放大的信号可以通过可经由开关选择的第一路径或第二路径来发送。 当选择第一路径时，放大的信号在宽频率范围内传输到信号输出。 当选择第二路径时，放大的信号在第二放大器处被接收，在低频范围内被放大到第二功率电平，并被发送到信号输出端。