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A Cost-effective and User-friendly Spectrum Analyzer for Educational Environment

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2012 ASEE Annual Conference & Exposition


San Antonio, Texas

Publication Date

June 10, 2012

Start Date

June 10, 2012

End Date

June 13, 2012



Conference Session

International Engineering Education: Developments, Innovations, Implementations, and Pedagogical Challenges in Engineering Education

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Page Count


Page Numbers

25.32.1 - 25.32.8

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Paper Authors


Alireza Rahrooh Daytona State College

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Alireza Rahrooh is an Associate Professor of electrical engineering technology at Daytona State College. He received the B.S., M.S., and Ph.D. degrees in electrical engineering from the University of Akron, in 1979, 1986, and 1990, respectively. His research interests include digital simulation, nonlinear dynamics, chaos, control theory, system identification, and adaptive control. He is a member of ASEE, IEEE, Eta Kappa Nu, and Tau Beta Pi.

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Walter W. Buchanan Texas A&M University

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Walter W. Buchanan is professor and Head of the Engineering Technology and Industrial. Distribution Department at Texas A&M University. He received his B.S.E. and M.S..E from Purdue University, and his Ph.D. and J.D. from Indiana University. Buchanan is a P.E. in six states.

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Faramarz Mossayebi Youngstown State University

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Faramarz Mossayebi is an Associate Professor in the Department of Electrical and Computer Engineering at Youngstown State University. He received his B.E. and M.S. degrees from Youngstown State University and his Ph.D. from the University of Akron. His teaching and research interests includes modeling and simulation of nonlinear dynamical systems, digital signal processing, embedded systems, and control.

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A Cost Effective and User Friendly Spectrum Analyzer for Educational EnvironmentAbstractThis paper presents the design of an inexpensive and user friendly spectrum analyzer. This isaccomplished by utilizing a variable switched capacitive filtering system in conjunction withsome commonly used integrated circuits. The resulting system exhibits twelve spectral bandswith constant gain and constant quality factor through the entire spectrum. Although the designconsiders only twelve spectral bands, with simple modifications the proposed technique can beexpanded to any desired bands. The primary intention of this paper is to provide a simple methodto build and utilize such an instrument in educational laboratories. Commercially availablespectrum analyzers are very expensive and not feasible for underdeveloped courtiers with limitedresources to obtain such expensive instruments.

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