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EvLer
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Does anyone know of a good tutorial/book that explains Butterworth filter and filters in general?
Thanks in advance.
Thanks in advance.
I googled the following:EvLer said:I need analog, our textbook (Lin & DeCarlo) has a chapter, but I need something that explains how the polynomial originates, what's the use of all the terms like inverted ohm's sign and all the standard notations used. In other words, something basic and detailed .
I can do the hw, but i don't feel like i have a good grasp on what is going on.
A Butterworth filter is a type of electronic filter that is designed to have a flat frequency response in the passband. It is commonly used in signal processing applications to remove unwanted noise or to select specific frequency components of a signal.
A Butterworth filter works by using a set of capacitors and resistors to create a frequency-dependent voltage divider. This voltage divider attenuates frequencies outside of the desired passband, resulting in a smooth response in the passband. The order of the filter determines how quickly the filter attenuates frequencies outside of the passband.
A low-pass Butterworth filter allows frequencies lower than a certain cutoff frequency to pass through, while attenuating higher frequencies. A high-pass Butterworth filter, on the other hand, allows frequencies higher than the cutoff frequency to pass through, while attenuating lower frequencies. Both filters have a smooth frequency response in their respective passbands.
Designing a Butterworth filter involves choosing the desired cutoff frequency and the order of the filter. The cutoff frequency is determined by the specific application, while the order of the filter affects the rate of attenuation outside of the passband. There are various online calculators and software tools available to help with designing a Butterworth filter.
Yes, there are many tutorials and books available for learning more about Butterworth filters. Some recommended resources include "An Introduction to Analog and Digital Communications" by Simon Haykin, "Active Filter Design" by T.H. Lee, and online tutorials from websites such as All About Circuits and Analog Devices.