一种红外焦平面阵列探测器的新型非均匀性校正电路

非制冷红外焦平面阵列(IRFPA)读出电路由于工艺制造或受环境条件的影响在正常运行时会产生非均匀性。针对传统电路存在的非均匀性问题,设计了基于12μm像元的非均匀性校正电路,该新型非均匀校正电路采用共源共栅电流镜产生电流,并且通过调节比例电流支路输出不同比例的电流,加入放大器负反馈结构提高电流精度,对像元阵列产生的非均匀性进行补偿。在TSMC 0.18μm工艺条件下进行仿真测试,新型校正电路进行校正之后,校正电流为368 nA。积分电流为44.24 nA,积分电路(CTIA)输出电压为3.81 V,积分时间缩短为255.43 ns,在不同的温度条件下,非均匀性问题降为3%以下,输出电压更稳定,满足设计条件。     

一种由全息图制作相息图的方法

将全息图通过高分辨率扫描仪扫入计算机,根据全息图的频域特性,对它进行一维傅 立叶变换,频域滤波去载频,再逆傅立叶变换,求出全息面上的物光信息,从而实现三维场景相息图的制作。由于采用了一维快速傅立叶变换(1DFFT) ,大大提高了相息图的制作速度。     

Research on the Fundamental Technologies of Micro Fluidic Systems

The research results of “the fundamental technologies of micropumps”, being part of the key project of “the fundamental research on the theories and technologies of micro manufacturing” supported by the National Nature Science Foundation of China, are summarized and the continued research work is also introduced in this paper. And the characteristics of microelectromechanical systems are described based on the research activities of the micro fluidic systems. Microelectromechanical systems will open up more and more applications with the breakthrough progress in the key fundamental researches. It is a chance for us to develop the field of MEMS while MEMS are just being promoted roundly in the world.