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Author:

Liu, Sujuan (Liu, Sujuan.) | Yang, Yue (Yang, Yue.) | Chen, Jianxin (Chen, Jianxin.)

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EI Scopus PKU CSCD

Abstract:

Realization errors degrade the reconstruction performance of hybrid filter bank (HFB) analog-to-digital converter (ADC) system. A general analysis, which takes into consideration analog imperfections and channel mismatches based on HFB architecture, is presented in theories and simulations. Then, a flexible frequency-dependent equivalent model (FDEM) is derived to integrate the realization errors and used as the calibration object for the synthesis filter banks. A two-channel HFB ADC prototype with 12-bit resolution and 200 MHz sampling rate was implemented. Experiment results show that using the proposed calibration method, the average spurious-free dynamic range (SFDR) in a span over 93% of the whole frequency spectrum (7% over-sampling) is enhanced from 35 dB to 87 dB, which proves the feasibility of the proposed method.

Keyword:

Filter banks Analog to digital conversion Errors Frequency converters Calibration

Author Community:

  • [ 1 ] [Liu, Sujuan]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 2 ] [Yang, Yue]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 3 ] [Chen, Jianxin]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China

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Source :

Chinese Journal of Scientific Instrument

ISSN: 0254-3087

Year: 2010

Issue: 9

Volume: 31

Page: 1972-1978

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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