Asee peer logo

Amplitude Modulation Circuit Implementation for use in a Communication Course for Electrical Engineering Students

Download Paper |


2017 ASEE Annual Conference & Exposition


Columbus, Ohio

Publication Date

June 24, 2017

Start Date

June 24, 2017

End Date

June 28, 2017

Conference Session

Electrical and Computer Division Technical Session 2

Tagged Division

Electrical and Computer

Page Count




Permanent URL

Download Count


Request a correction

Paper Authors


Robert J. Barsanti Jr. The Citadel

visit author page

Robert Barsanti is a Professor in the Department of Electrical and Computer Engineering at The Citadel where he teaches and does research in the area of target tracking and signal processing. Since 2015, Dr. Barsanti has served as the William States Lee Professor and Department Head. Before joining The Citadel in 2002, he served on the faculty and as a member of the mission analysis design team at the Naval Postgraduate School in Monterey, CA. Dr. Barsanti is a retired United States Naval Officer. His memberships include the Eta Kappa Nu, and Tau Beta Pi honor societies.

visit author page


Jason S. Skinner The Citadel

visit author page

Jason S. Skinner was born in Marion, South Carolina on December 10, 1975. He received the B.S. degree (with departmental honors) in electrical engineering in 1998 from The Citadel, The Military College of South Carolina, Charleston, South Carolina. He received the M.S. degree in 2002 and the Ph.D. degree in 2005, both in electrical
engineering, from Clemson University, Clemson, South Carolina.
He joined the Department of Electrical and Computer Engineering at The Citadel in January 2006, where he is currently an associate professor. From May 2006 to July 2007, he also held the position of senior engineer with Scientific Research Corporation, North Charleston, South Carolina. His current research interests include mobile wireless communication systems and networks, spread-spectrum communications, adaptive protocols for packet radio networks, and applications of error-control coding. Dr. Skinner is a member of AFCEA, ASEE, Tau Beta Pi, and Phi Kappa Phi. He served as president of the South Carolina Gamma chapter of Tau Beta
Pi from 1997 to 1998. He was an M.I.T. Lincoln Laboratory Fellow from 2002 to 2005 and a Multidisciplinary University Research Initiative Fellow from 2004 to 2005. In 1998, he received the George E. Reves award for outstanding achievements in mathematics and computer science at The Citadel.

visit author page

Download Paper |


Abstract – Modern descriptions of analog communication schemes are mathematics based using transform theory and block diagrams. This presentation style leaves undergraduate students with the challenge of relating these theories to real world circuit implementations. This is particularly true if the lecture class does not have a complementary laboratory component. This paper attempts to bridge this gap by presenting a basic yet comprehensive project that can be used to demonstrate amplitude modulation and demodulation theory. It is specifically designed to stir the interest of junior or senior level electronics minded electrical engineering students. In this project, a double sideband large carrier waveform is produced using a simple switching modulator circuit. The resulting amplitude modulation (AM) waveform is then demodulated using an envelope detector circuit. The proposed project requests that students perform a circuit simulation as well as an actual circuit implementation. The circuit behavior is studied via both analysis using software tools and measurement using hardware components. The project further requires that the electrical signals are visualized in both the time and frequency domain to enhance concept understanding. The paper outlines an introduction to the modulation theory along with an overview of the necessary circuits and concepts. Additionally, suggested student activities, project assignment alternatives, along with detailed mathematical solutions are provided.

Barsanti, R. J., & Skinner, J. S. (2017, June), Amplitude Modulation Circuit Implementation for use in a Communication Course for Electrical Engineering Students Paper presented at 2017 ASEE Annual Conference & Exposition, Columbus, Ohio. 10.18260/1-2--27545

ASEE holds the copyright on this document. It may be read by the public free of charge. Authors may archive their work on personal websites or in institutional repositories with the following citation: © 2017 American Society for Engineering Education. Other scholars may excerpt or quote from these materials with the same citation. When excerpting or quoting from Conference Proceedings, authors should, in addition to noting the ASEE copyright, list all the original authors and their institutions and name the host city of the conference. - Last updated April 1, 2015