Title :
Compensation method for the CIC filter in digital down converter
Author :
Li, Mingqi ; Zhang, Shu ; Diao, Xinying
Author_Institution :
Coll. of Inf. & Commun. Eng., Harbin Eng. Univ., Harbin, China
Abstract :
CIC filter, for its simple structure without using multipliers, is widely used in digital down converter to achieve efficient digital filtering. However, it has an inherent pass band magnitude droop. Compensation filter is required in a bandwidth requirements system. A number of different methods which have been proposed can only compensate a narrow pass band segment of the CIC filter. In this paper, a method with the structure of polyphase decimation FIR filter is proposed to achieve wide broadband compensation of the CIC filter and sampling rate conversion.
Keywords :
FIR filters; band-pass filters; CIC filter; bandwidth requirements system; broadband compensation; compensation filter; digital down converter; digital filtering; pass band magnitude droop; polyphase decimation FIR filter; sampling rate conversion; Attenuation; Bandwidth; Educational institutions; Finite impulse response filter; Frequency response; CIC filter; compensation filter; digital down converter;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2011 International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4244-8162-0
DOI :
10.1109/ICECENG.2011.6057242
