Active Filters

  • Tildon H. GlissonJr.


Fundamentally, a filter is a circuit whose purpose is to separate one or more signals from one or more others. Filtering allows you to select a particular radio station from the hundreds that are simultaneously present at your radio’s antenna. Filtering is used to process radar and sonar echoes, to clean up old recordings, and in a host of other applications. Filters are present in virtually all electronic systems for communication, control, instrumentation, echolocation (radar, sonar, infrared), image processing, and (of course) signal processing. It is hard to think of a significant electronic system that does not involve filtering.


Input Impedance Group Delay Output Impedance Voltage Gain Active Filter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Dept. of Electrical and Computer Eng.North Carolina State UniversityRaleighUSA

Personalised recommendations