一种微光像增强器阴极选通模块的设计  

Design of Image Intensifier Photocathode Gating Module

作　　者：杜培德 朱文锦 周盛涛 李晓露 李亚情 褚祝军[1] 杨可洁 DU Peide;ZHU Wenjin;ZHOU Shengtao;LI Xiaolu;LI Yaqing;CHU Zhujun;YANG Kejie(North Night Vision Technology Co.Ltd,Kunming 650217,China)

机构地区：[1]北方夜视技术股份有限公司,云南昆明650223

出　　处：《红外技术》2021年第10期1008-1013,共6页Infrared Technology

摘　　要：高速成像分幅相机通过阴极选通模块控制微光像增强器的光电阴极选通工作可实现ns级的时间分辨率,传统阴极选通模块存在开关速度慢、只有负压输出或正负压不能满幅值输出等问题。本文基于CMOS推挽输出结构和电压电平转移电路,设计实现一种能够使用低边驱动器驱动PMOS和NMOS开关的阴极选通模块,并采用死区时间控制避免上、下管交叉导通。实测验证该电路具有结构简单、性能可靠等优点,实现了ns级上升、下降沿,占空比0~100%可调和满幅值+30~-200V脉冲输出,十分适合微光像增强器阴极选通使用。For high-speed imaging framing cameras,nanosecond-level time resolution can be achieved using a photocathode gating module to control the image intensifier photocathode.Traditional modules have some problems,such as slow switching speed,exclusively negative voltage output,and positive or negative voltage outputs that cannot reach the full amplitude.Based on the CMOS push-pull output structure and voltage level transfer circuit,a photocathode gating module was designed,which could use a low-side driver driving PMOS and NMOS.Dead-time control was used to avoid cross conduction of the upper and lower MOSFETs.The actual test results verified that this module has the advantages of simple structure and reliable performance;moreover,the ns level rising or falling edge,adjustable duty ratio 0 to 100%,and+30 to-200 V pulse output amplitude were realized.This module was found to be suitable for gating the photocathode of the image intensifier.

关 键 词：微光像增强器 阴极选通 正负脉冲发生器 

分 类 号：TN22[电子电信—物理电子学]