摘要
设计了一套中子管用小功率射频离子源前端电路.该射频离子源前端电路主体由MC1648压控振荡器产生的信号源、功率放大器、耦合天线及阻抗匹配电路等部分组成.利用Smith圆图对前端电路主体进行了设计研究,结果实现了可产生稳定工作频率13.56MHz、最大输出功率为4 W的高频正弦波.
This paper discusses some basic problems of RF ion source,and designs a set of low power RF ion source front-end circuit.RF ion source at the front end of the main circuit by MC1648 voltagecontrolled oscillator(VCO)generates a signal source,power amplifier,a coupling antenna impedance matching of three parts,the three parts of the power transmission is the emphasis and difficulty of this design.Finally it can produce the maximum power of 13.56 MHz and 4 Wradio frequency sine wave signal stably.
引文
[1]SPETH E,NBI TEAM.Development of powerful RF plasma sources for present and future NBI systems[J].Plasma Science and Technology,2004,6(1):2135-2140.
[2]WELLS S B,TAKEIRI Y,NEWMAN A F,et al.Development of large area RF ion source for fusion applications[J].Review of Scientific Instruments,1992,63(4):2735-2737.
[3]张贤明.10cm射频离子源工程设计与初步试验[D].武汉:华中科技大学,2008.
[4]姜韶凤.强流离子源和中性束注入系统[R].成都:核工业西南物理研究院,2003.
[5]陈邦媛.射频通信电路[M].北京:科学出版社,2006:252-254.
[6]MOTOROLA.MC1648 Datasheet[DB].[2018-06-20].http://www.datasheetcatalog.com/datasheets_pdf/M/C/1/6/MC1648.shtml,2016.
[7]M M拉德马内斯.射频与微波电子学[M].顾继慧,李鸣,译.北京:科学出版社,2005:333-335.
[8]刘长军,黄卡玛,闫丽萍,等.射频通信电路设计[M].北京:科学出版社,2005:69-74.
[9]JIANX G,JI Q.Mini RF-driven ion sources for focused ion beam systems[D].California:University of California,2002:1-3.