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Published in:
2019 | OriginalPaper | Chapter
11. Active Filters
Author : Afshin Izadian
Published in: Fundamentals of Modern Electric Circuit Analysis and Filter Synthesis
Publisher: Springer International Publishing
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Abstract
Filters are frequency selective circuits. This means that they deliberately allow or block a range of frequencies while passing from input to output. Passive filters were circuits that accomplish this task by utilization of passive circuit elements such as R,L, and C. The maximum gain of the output signal is 100% of the input signal when operated at the resonant or at a frequency with orders of magnitude higher or lower than the cutoff frequency.