Design and Implementation of Single/Multiple Frequency Notch Filter using Adaptive Noise Cancellor for Communication Applications

  • Raghu K, Santhosh Boraganve, Hemanth Gowda


This paper deals with the design of single/multiple frequency notch filter using Adaptive Noise Canceller technique. The normalized LMS algorithm used for any adaptive filter design is employed in the paper for developing adaptive noise canceller, which is in-turn utilized for realizing a single/multiple notch filter. Notch filters are commonly applied in communication, control, instrumentation, bio-medical engineering and many other fields, to eliminate noise and power line interferences. The experimental results presented in the paper shows that the bandwidth and the mean square error of the designed notch filter output is minimum compared to regular method of notch filter design.