摘要
简要叙述了硅磁敏二极管工作原理及负阻振荡机理,设计了振荡电路,测量和分析了硅磁敏二极管的负阻振荡输出波形与温度、磁场等外界条件之间的关系。测试结果显示,重掺杂的硅磁敏二极管具有负阻振荡特性,振荡电路所产生的锯齿波的频率范围为373mHz^94.0kHz,且振荡频率与温度、磁场、电源电压及负载之间成正相关。分析表明,具有负阻特性的硅磁敏二极管满足振荡条件时,其两端的电压周期性变化,且随外界条件变化而改变,利用这些特性制成新的测量温度、湿度和磁场的复合传感器或变容器件接口电路。
The theory and negative-resistance oscillation of silicon magnetic diode were briefly depicted in the paper. The Oscillation circuit was designed, and the denpendence of negative resistance characteristics of silicon magnetic diode on temperature and magnetic field was measured and analyzed. The results showed that, the high doped silicon magnetic diode exhibits negative resistance characteristics. The given oscillation circuit generates a sawtooth waveform with frequency range form 373mHz to 94.0kHz, and positive correlation is found between oscillation frequency and environment temperature, magnetic field, power supply, and load. The silicon magnetic diode produces a periodic voltage as a function of external condition if oscillation condition is met. Based on these characteristics, we can manufacture interface circuits of varactor or compound sensor for measuring signal of temperature, humidity, and magnetic field.
出处
《磁性材料及器件》
CSCD
北大核心
2012年第6期55-57,共3页
Journal of Magnetic Materials and Devices
基金
江苏省教育厅高校科技成果孵化及高新技术产业推广项目(2010-24)
江苏省淮安市科技创新载体平台建设计划项目(HAP201167)
关键词
硅磁敏二极管
负阻特性
测试
传感器
silicon magnetic diode
negative-resistance
measurement
sensor
