a) Show (via a qualitative analysis) that the circuit in Fig. P14.37 is a bandreject filter. b) Support the qualitative analysis of (a) by finding the voltage transfer function of the filter. c) Derive the expression for the center frequency of the filter. d) Derive the expressions for the cutoff frequen- cies wel and wc2- e) What is the expression for the bandwidth of the filter? f) What is the expression for the quality factor of the circuit?

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Filter

A filter is a device or process which removes some of the unwanted features or components like frequencies from a signal in signal processing. The feature of filters is the complete or partial suppression of some part of the signal, and filtering is a class of signal processing. This most often means removing some frequency bands or some frequencies. In the frequency domain, the filters do not exclusively act, especially in the image processing field many other targets for filtering exist. Without having to act in the frequency domain, the correlations can be removed for certain frequency components and not for others. The filters are widely used in electronics and telecommunication, in television, radio, radar, audio recording, music synthesis, control systems, computer graphics, and image processing.