Design of Digital Bandpass/Bandstop Filters with Independent Tuning Characteristics
Sanjit K. Mitra, K. Hirano, Satoshi Nishimura, Kazunori Sugahara · Frequenz · 1990
Two different approaches are proposed in this paper for the design of bandpass/bandstop filters with independent tunning of the center (notch) angular frequency ω 0 and the 3-dB attenuation (notch) bandwith Ω c . These approaches lead to a variety of two-multiplier structures for the realization of second-order bandpass/bandstop digital filters in which one multiplier controls ω 0 and the other multiplier adjusts Ω c