本文为CdznTe(CZT)二元并行探测器设计并制作了信号处理系统电路,包括前置放大电路,差分放大电路,极零相消电路,滤波成形电路,微调电路和基线恢复电路和加和电路.137Cs(662keV)辐射下的信号,经过差分放大,极零相消和滤波成形电路的输出,信号持续时间在10μs内,幅度为260mV,两路信号相加后信噪比大于15:1.能谱测试初步结果表明:采用这个信号处理系统,二元CZT并行探测器对137Cs(662keV)源的探测效率分别是单元器件的1.74和2.2倍,能量分辨率接近于单元器件.
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