传感技术学报2016，Vol.29Issue(4)：484-488,5.DOI:10.3969/j.issn.1004-1699.2016.04.004
基于射频单电子晶体管的超灵敏电荷计的数值分析
Numerical Analysis of an Extremely Sensitive Electrometer Based on Radio Frequency Single Electron Transistor
摘要
Abstract
By integrating a single electron transistor(SET)with a radio resonance circuit,the radio frequency single electron transistor(RF SET)can be used as an extremely sensitive and ultra high-speed electrometer. In this work, the equivalent circuit model of RF SET is established. The resonance circuit and the integration with the RF transmis⁃sion line are investigated. The optimum matching of the SET impedance,resonant frequency,quality factor and the sensitivity of the SET impedance are obtained. Results indicate that the charge-induced impedance of the SET has di⁃rect impacts on the quality factor,impedance and the transmission or reflection coefficient of the RF circuit. The ra⁃dio signal decreases with increasing impedance of the SET,while the peak position remains unchanged. The ampli⁃tudes of the resonance vary significantly with impedance under 200 kΩ. Comparisons indicate that the transmission RF SET has higher resonance frequency and quality factor,while the reflection RF SET shows a higher sensitivity.关键词
电荷计/射频单电子晶体管/等效电路/透射/反射Key words
electrometer/radio frequency single electron transistor/equivalent circuit/transmission/reflection分类
信息技术与安全科学引用本文复制引用
苏丽娜,李欣幸,秦华,顾晓峰..基于射频单电子晶体管的超灵敏电荷计的数值分析[J].传感技术学报,2016,29(4):484-488,5.基金项目
中国科学院科研装备研制项目（YZ201152）；国家自然科学基金项目（11403084）；中央高校基本科研业务费专项资金项目（JUSRP51510，JUDCF12032）；江苏省普通高校研究生创新计划基金项目 （）
