Properties of Linear Digital Filters: The properties of linear digital filters defined as transformations of discrete functions are described in the following. Discrete Functions Equation are defined only for discrete values of their variables, that…
Introduction to Digital Filtering: It has been seen that control of the band width of a circuit or signal is of paramount importance in optimizing the measurement of a signal. Formerly band width control was…
Types of Active Filters: There are basically four useful Types of Active Filters. Namely Butterworth Filter Chebyschev Filter Bessel Filter Elliptic Filter Butterworth Filter: The Butterworth filter has an essentially flat amplitude versus frequency response…
Universal Active Filter using Op Amp: With the advance of integrated circuit technology, integrated circuits with improved capabilities are appearing in ever increasing numbers. Innovative design methods and fabrication procedures have not only helped to…
All Pass Filter Design: The All Pass Filter Design is one that passes all frequency components of the input signal without attenuation. Any ordinary wire can be used to perform this charÂacteristic but the most…
Band Reject Filter Circuit: In this Band Reject Filter Circuit, frequencies are attenuated in the stop band and passed outside it, as shown in Fig. 15.20(b). As with band pass filters, band reject filters can…
Band Pass Filter Circuit Diagram: A Band Pass Filter Circuit Diagram designed to pass signals only in a certain band of frequencies while rejecting all signals outside this band. There are basically two types of…
Higher Order Filter Design: Higher Order Filter Design - From the preceding discussion on filters we can conclude that in the stop band the gain of the filter changes at the rate of 20 db/decade…
Second Order High Pass Butterworth Filter Derivation: As in the case of a first order filter, a second order high pass filter can be formed from a second order low pass filter by simply interchanging…
First Order High Pass Butterworth Filter Derivation: First Order High Pass Butterworth Filter Derivation - High pass filters are often formed by interchanging frequency determining resistors and capacitors in a low pass filter. A first…
