A Decimation Filter for Digital Down-Conversion
Ruzhang Li
Abstract
Ruzhang Li
Abstract
Design of a decimation filter for digital down-conversion was presented in detail.The decimation filter,which was implemented by successively cascading a CIC filter,a CIC compensation filter and a half-band filter,achieved a decimation factor of 20.By utilizing equivalent transformation and polyphase decomposition of the decimation filter,both hardware cost and operating power of each sub-decimation filter were also reduced.
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Design of a decimation filter for digital down-conversion was presented in detail.The decimation filter,which was implemented by successively cascading a CIC filter,a CIC compensation filter and a half-band filter,achieved a decimation factor of 20.By utilizing equivalent transformation and polyphase decomposition of the decimation filter,both hardware cost and operating power of each sub-decimation filter were also reduced.
Key concepts: Decimation, Polyphase system, Filter (signal processing), Capacitor-input filter, Cascaded integrator–comb filter, Electronic engineering, Filter design, High-pass filter