Analog Electronic Filters pp 1-29 | Cite as
Introduction to Filter Concepts
- 3.1k Downloads
Abstract
This introductory chapter lays the foundations of the book and it addresses those fundamental concepts and definitions which will be employed in later chapters. Thus, the magnitude frequency response is presented in the various forms encountered in practice such as plain gain, logarithmic gain and attenuation. Filters are then classified in the standard formats namely as lowpass, highpass, bandpass or band-reject according to their frequency responses and it is shown subsequently that ideal filtering characteristic versions of these cannot be realized by “real world” causal systems. In outlining the filter design procedure, it is demonstrated that that it can be simplified considerably by employing standard tools such as impedance and frequency scaling and normalization. Moreover to achieve a realizable and hence non-ideal filter response we need to resort to approximations, that is to say procedures for determining the appropriate mathematical gain functions which will satisfy a given set of gain specifications.
Keywords
Transfer Function Filter Design Gain Function Frequency Scaling Prototype FilterReferences1
- 1.Ananda Mohan, P.V.: Current-Mode VLSI Analog Filters Design and Applications. Birkhauser, Boston (2003) zbMATHCrossRefGoogle Scholar
- 2.Antoniou, A.: Digital Filters Analysis Design and Applications, 2nd edn. McGraw-Hill, New York (1993) Google Scholar
- 3.Chen, W.-K.: Passive and Active Filters—Theory and Implementations. Wiley, New York (1986) Google Scholar
- 4.Chen, W.-K.: Passive, Active and Digital Filters. The Circuits and Filters Handbook, vol. V. CRC Press, Boca Raton (2009) Google Scholar
- 5.Chirlian, P.M.: Signals and Filters. Springer, Berlin (1994) Google Scholar
- 6.Deliyannis, T., Sun, Y., Fidler, J.K.: Continuous-Time Active Filter Design. CRC Press, Boca Raton (1999) Google Scholar
- 7.Papoulis, A.: Circuits and Systems—A Modern Approach. Holt, Rinehart and Winston, New York (1980) Google Scholar
- 8.Schaumann, R., Van Valkenburg, M.E.: Design of Analog Filters. Oxford University Press, London (2001) Google Scholar
- 9.Sun, Y. (ed.): Design of High Frequency Integrated Analogue Filters. The Institution of Electrical Engineers (2002) Google Scholar
- 10.Wanhammar, L.: Analog Filters Using MATLAB. Springer, Berlin (2009) zbMATHCrossRefGoogle Scholar
- 11.Williams, A., Taylor, F.: Electronic Filter Design Handbook. McGraw-Hill, New York (2006) Google Scholar