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Volume 26 Issue 3
Mar.  2004
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Huang Guang-min, Gao Xiang-wu, Yang Ru-liang. Polyphase Kaiser Filter for the Correction of I/Q Imbalance of Digital Synthetic Aperture Radar[J]. Journal of Electronics & Information Technology, 2004, 26(3): 364-369.
Citation: Huang Guang-min, Gao Xiang-wu, Yang Ru-liang. Polyphase Kaiser Filter for the Correction of I/Q Imbalance of Digital Synthetic Aperture Radar[J]. Journal of Electronics & Information Technology, 2004, 26(3): 364-369.

Polyphase Kaiser Filter for the Correction of I/Q Imbalance of Digital Synthetic Aperture Radar

  • Received Date: 2002-11-12
  • Rev Recd Date: 2003-03-25
  • Publish Date: 2004-03-19
  • The principle of the quadrature coherent detector of the digital Synthetic Aperture Radar (SAR) is introduced in the paper. The imbalance of its I/Q is analyzed, and the uniform index of its imbalance is presented. For the correction of the digital SAR I/Q imbalance, the paper adopts a new method-interpolation polyphase Kaiser filter. The results show that when the stage of the polyphase Kaiser filter is 16 the ratio of sidelobe suppression is -74dB, and the relative instant frequency error is -1.18%.
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