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IEEE/ICACT20230155 Slide.08        [Big Slide]	Oral Presentation
	The IFIR approach involves designing two cascaded low-pass filters (LPFs). The first-stage filter is constructed by up-sampling (or interpolation with inserted zeros) the impulse response (IR) of a prototype filter (PF). Hence,the frequency response (FR) of the first-stage filter will be the replicated and compressed FR of PF. the second-stage filter in the IFIR design is used to remove the replicated FR images except the low-pass part around the DC, and is thus called the masking filter (MF). Figure shows the IFIR two-stage filtering structure.

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