Application of direct digital frequency synthesis technology in radio-frequency power of quadrupole mass spectrometerChinese Full Text
LI Kai;LI Ming;TANG Xing-bin;LIANG Bin;NCS Testing Technology Co.,Ltd.;
Abstract: The radio-frequency power drive circuits of the quadrupole mass spectrometer are mostly built in the analog design with relatively fixed frequencies.However,because the radio-frequency power required different frequencies when driving different loads,it’s necessary to change the hardware parameters of the analog components,which is a cumbersome process.To overcome this defect, a novel frequency-generating circuit for the radio-frequency power was developed.The design combined the direct digital frequency synthesis（DDS）technology and the advanced RISC machine（ARM） microcontroller,and after being configured on the host computer,could output frequency-and phaseadjustable sine wave signals,whose frequency was adjustable from 0to 15MHz and whose resolution was 0.023 28 Hz.Experiments showed that the frequency-generating circuits had simple structures and stable and reliable performance.It has been successfully used in the radio-frequency power of the quadrupole mass spectrometer.
Keywords：
direct digital frequency synthesis technology; advanced RISC machine microcontroller; ra-dio-frequency power; quadrupole mass sp ectrometer;
- DOI：
10.13228/j.issn.1000-7571.2014.02.005
- Series：
- Subject：
- Classification Code：
TH843
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