Frequency filters are used to suppress noise, remove interfering signals, and to channel multifrequency signals along their intended paths. In this module we will be analyzing RLC circuits that can filter in (pass through) the range of frequencies of interest (to a certain application, such as in a communication, imaging, or sensing system) and filter out (reject) the range of frequencies of signals that are either problematic or not of interest. The filters can be classified as lowpass, highpass, bandreject and bandpass.
Discussion topic: Discuss the major differences between (a) lowpass and highpass filters, (b) Bandreject and bandpass filters.