Symmetric IIR notch filter design using pole position displacement

This research paper presents the design of symmetrical infinite impulse response (IIR) notch filter using pole position displacement. The technique of modifying the pole-zero placements has been used in order to ensure the symmetrical of the pass-band and transition-band gain. This technique was quantitative and treated by making some meaningful approximations with a set of relatively simple design equations. From the simulation, the design examples have shown the performance of the proposed method effectively.