Narrow-band and wide-band single filter frequency masking FIR filters
نویسندگان
چکیده
In this paper single filter frequency masking FIR filters are discussed. We briefly review the previously proposed lowpass narrowband filters and propose a design method for highpass narrow-band filters. Wide-band filters are also discussed. The proposed approach uses several identical filters, except for periodicity, which are mapped to a single hardware structure using folding. This results in an area-efficient implementation with a small number of multipliers and adders at the cost of more memory. An example discusses the design of a wide-band lowpass filter and shows that substantial savings can be made.
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