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中文摘要：
本文提出了一种基于小波分析的混合信号电流测试方法，该方法通过小波变换对电路的动态电流信号Idd进行分解来诊断电路是否存在故障。对示例ADC电路的仿真结果表明，该方法不仅能够有效检测出电路中的各种缺陷，而且比积分法和傅里叶分析方法对故障有更高的灵敏度。
英文摘要：
In this paper, a novel wavelet analysis based current test method for mixed signal is presented, with which dynamic current signal （Idd） is decomposed to diagnose the fault of the circuit. The simulation result for an example ADC circuit shows that the proposed method not only can effectively detect all of the faults, but also has higher sensitivity than integral and FFT methods.
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