Design of Inverse-sinc Amplitude-frequency Compensation Filter based on FPGA
ieee international conference on signal and image processing(2020)
摘要
DAC chips are used in the digital signal system to convert the digital signal into analog signal, which will bring amplitude-frequency distortion. This article starts from the cause of this kind of amplitude-frequency distortion, studies the effect of DAC chip on the signal amplitude-frequency characteristics, then designs a general FPGA-based Digital inverse-sinc amplitude-frequency compensation filter for such distortion. In this paper, the amplitude-frequency characteristics of the signal before and after passing through the inverse-sinc compensation filter are analyzed through simulation. Finally the performance of the designed amplitude-frequency compensation filter is verified.
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关键词
Inverse-sinc compensation,FIR filter,Polyphase filtering,FPGA
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