关键词: 多级级联, 插值, 抽取, 半带滤波器, 自动生成

Abstract: An automatic generation method of cascaded half-band filter register transfer level (RTL) code is proposed for the filtering requirements of digital up and down conversion and the development trend of automation. Design requirement parameters are read, a python universal dictionary object is created, and the design parameters are stored in this dictionary object; Then the design parameters in the dictionary object are read, and RTL code of cascaded half-band filter with parallel pipeline structure is generated based on Python. The experimental results show that the proposed method can automatically generate any N-level cascaded half-band interpolation filter or any N-level cascaded half-band decimation filter, and the generated filter can achieve 2^N times interpolation or decimation, which improves the design efficiency and shortens the development period.

Key words: multilevel cascade, interpolation, decimation, half-band filter, automatic generation