Analysis and design of M-channel frequency-interleaved ADC with analog filter estimation

Analysis and design of M-channel frequency-interleaved ADC with analog filter estimation
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具有模拟滤波器估计的M通道频率交错ADC的分析与设计

DOI:
10.1007/s10470-014-0381-2
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发表时间:
2014-10
影响因子:
1.4
通讯作者:
Guo, Lianping
Guo, Lianping
中科院分区:
工程技术4区
文献类型:
--
作者:
Liu, Tao;Tian, Shulin;Wang, Zhigang;Guo, Lianping

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与时间交错ADC系统相比,频率交错ADC(FIADC)系统的性能对模拟分析滤波器的参数不确定性非常敏感。本文提出了一种新的方法来估计模拟分析滤波器的幅相响应,这将有助于我们在真实的应用中掌握滤波器的实际状态。在此基础上,提出了两种以重构误差最小为目标的数字综合滤波器设计算法。设计实例和验证结果表明,分析滤波器可以有效地估计,所设计的综合滤波器满足FIADC系统的要求。
Compared to time-interleaved ADC system, the performance of frequency-interleaved ADC (FIADC) system is extremely sensitive to the parameter uncertainties of the analog analysis filters. In this paper, a new method is launched to estimate the amplitude and phase responses of the analog analysis filters, which will help us grasp the actual filter status in real applications. Then, two algorithms are presented to obtain the digital synthesis filters aiming at minimize the reconstruction error. Design example and verification results show that the analysis filters can be estimated effectively and the designed synthesis filters meet the need of the FIADC system.
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