CAJ | 학술논문

介绍了一种辐射探测中微弱脉冲信号放大电路设计，实现了在一定系统带宽下可测量下限的拓展。通过分立器件和集成运放结合使用来实现低噪声设计，利用小电容受激产生小电流信号与激励成较好的线性关系以及探测器等效电路来实现可测量下限的标定，实现了可在系统带宽19 MHz下，对低于1μA的辐射脉冲电流信号实现有效检测，提高了现有技术水平。
개소료일충복사탐측중미약맥충신호방대전로설계，실현료재일정계통대관하가측량하한적탁전。통과분립기건화집성운방결합사용래실현저조성설계，이용소전용수격산생소전류신호여격려성교호적선성관계이급탐측기등효전로래실현가측량하한적표정，실현료가재계통대관19 MHz하，대저우1μA적복사맥충전류신호실현유효검측，제고료현유기술수평。
The paper introduced a method to get the small pulse signal in radiation detection based on an ampli -fier circuit , it mainly explored the lower measurement limit in a certain band width range .It achieved the low noise circuit design with audions and OPA .Basing on the theories of a small capacitor's output is linearity with its input and the equivalent circuit of the radiation detector , it could confirm the low measurement limit . Through the test , the system could get the small pulse signal below 1 A with 19 MHz bandwidth and improve the existing test level .