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公开(公告)号：US10438784B2
公开(公告)日：2019-10-08
申请号：US16150624
申请日：2018-10-03
申请人： Micromass UK Limited
摘要： A voltage supply system for supplying an RF voltage to an RF resonant load comprising an ion-optical component of a mass spectrometer is disclosed. The system comprises a Direct Digital Synthesizer (“DDS”) arranged and adapted to output an RF voltage. The voltage supply system is arranged and adapted: (i) to vary the frequency of the RF voltage output by the Direct Digital Synthesizer, (ii) to determine a first resonant frequency of the RF resonant load comprising the ion-optical component, and (iii) to determine whether or not the generation of an RF voltage at the first resonant frequency by the Direct Digital Synthesizer would also result in the generation of a spur frequency close to the first resonant frequency. If it is determined that a spur frequency would be generated close to the first resonant frequency then the voltage supply system is further arranged and adapted: (iv) to consult a look-up table comprising one or more preferred frequencies, and (v) to direct the Direct Digital Synthesizer to generate an RF voltage at a second frequency which corresponds with one of the preferred frequencies from the look-up table, wherein the second frequency is different to said first resonant frequency.
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2.发明申请High Frequency Voltage Supply Control Method for Multipole or Monopole Analysers 审中-公开用于多极或单极分析仪的高频电源控制方法公开(公告)号：US20160293393A1
公开(公告)日：2016-10-06
申请号：US15022705
申请日：2014-09-17
申请人： MICROMASS UK LIMITED
CPC分类号： H01J49/0036 , H01J49/0031 , H01J49/022 , H01J49/4215 , H01J49/422 , H01J49/4275
摘要： A voltage supply system for supplying an RF voltage to an RF resonant load comprising an ion-optical component of a mass spectrometer is disclosed. The system comprises a Direct Digital Synthesiser (“DDS”) arranged and adapted to output an RF voltage. The voltage supply system is arranged and adapted: (i) to vary the frequency of the RF voltage output by the Direct Digital Synthesiser, (ii) to determine a first resonant frequency of the RF resonant load comprising the ion-optical component, and (iii) to determine whether or not the generation of an RF voltage at the first resonant frequency by the Direct Digital Synthesiser would also result in the generation of a spur frequency close to the first resonant frequency. If it is determined that a spur frequency would be generated close to the first resonant frequency then the voltage supply system is further arranged and adapted: (iv) to consult a look-up table comprising one or more preferred frequencies, and (v) to direct the Direct Digital Synthesiser to generate an RF voltage at a second frequency which corresponds with one of the preferred frequencies from the look-up table, wherein the second frequency is different to said first resonant frequency.
摘要翻译： 公开了一种用于向包括质谱仪的离子光学部件的RF谐振负载提供RF电压的电压供应系统。 该系统包括布置并适于输出RF电压的直接数字合成器（“DDS”）。 电压供应系统被布置和适应：（i）改变由直接数字合成器输出的RF电压的频率，（ii）确定包括离子光学部件的RF谐振负载的第一谐振频率和（ iii）确定直接数字合成器在第一谐振频率下的RF电压的产生是否也将导致接近于第一谐振频率的杂散频率的产生。 如果确定将产生接近第一共振频率的杂散频率，则电压供应系统被进一步布置和适配：（iv）查阅包括一个或多个优选频率的查找表，以及（v）至 指导直接数字合成器以产生与来自查找表的优选频率之一相对应的第二频率的RF电压，其中第二频率不同于所述第一谐振频率。
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公开(公告)号：US20190080892A1
公开(公告)日：2019-03-14
申请号：US16150624
申请日：2018-10-03
申请人： Micromass UK Limited
CPC分类号： H01J49/0036 , H01J49/0031 , H01J49/022 , H01J49/4215 , H01J49/422 , H01J49/4275
摘要： A voltage supply system for supplying an RF voltage to an RF resonant load comprising an ion-optical component of a mass spectrometer is disclosed. The system comprises a Direct Digital Synthesiser (“DDS”) arranged and adapted to output an RF voltage. The voltage supply system is arranged and adapted: (i) to vary the frequency of the RF voltage output by the Direct Digital Synthesiser, (ii) to determine a first resonant frequency of the RF resonant load comprising the ion-optical component, and (iii) to determine whether or not the generation of an RF voltage at the first resonant frequency by the Direct Digital Synthesiser would also result in the generation of a spur frequency close to the first resonant frequency. If it is determined that a spur frequency would be generated close to the first resonant frequency then the voltage supply system is further arranged and adapted: (iv) to consult a look-up table comprising one or more preferred frequencies, and (v) to direct the Direct Digital Synthesiser to generate an RF voltage at a second frequency which corresponds with one of the preferred frequencies from the look-up table, wherein the second frequency is different to said first resonant frequency.
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公开(公告)号：US10134573B2
公开(公告)日：2018-11-20
申请号：US15022705
申请日：2014-09-17
申请人： Micromass UK Limited
摘要： A voltage supply system for supplying an RF voltage to an RF resonant load comprising an ion-optical component of a mass spectrometer is disclosed. The system comprises a Direct Digital Synthesiser (“DDS”) arranged and adapted to output an RF voltage. The voltage supply system is arranged and adapted: (i) to vary the frequency of the RF voltage output by the Direct Digital Synthesiser, (ii) to determine a first resonant frequency of the RF resonant load comprising the ion-optical component, and (iii) to determine whether or not the generation of an RF voltage at the first resonant frequency by the Direct Digital Synthesiser would also result in the generation of a spur frequency close to the first resonant frequency. If it is determined that a spur frequency would be generated close to the first resonant frequency then the voltage supply system is further arranged and adapted: (iv) to consult a look-up table comprising one or more preferred frequencies, and (v) to direct the Direct Digital Synthesiser to generate an RF voltage at a second frequency which corresponds with one of the preferred frequencies from the look-up table, wherein the second frequency is different to said first resonant frequency.
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