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Newkirk, D, and Karlquist, R, (2004), Mixers, modulators and demodulators. The ARRL Handbook for Radio Communications, Newington: ARRL. ISBN 0-87259-196-4. de: Amplituden modulation (81st ed.), pp. 15.1-15.36.

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Article

Design and Development of an Amplitude Modulator Using Square Law Approach

1Department of Electronic and Computer Engineering, Lagos State University, Lagos Nigeria


International Transaction of Electrical and Computer Engineers System. 2014, Vol. 2 No. 1, 39-43
DOI: 10.12691/iteces-2-1-7
Copyright © 2014 Science and Education Publishing

Cite this paper:
Folorunso C.O., Akinyemi L.A., Adedoyin M.A.. Design and Development of an Amplitude Modulator Using Square Law Approach. International Transaction of Electrical and Computer Engineers System. 2014; 2(1):39-43. doi: 10.12691/iteces-2-1-7.

Correspondence to: Folorunso  C.O., Department of Electronic and Computer Engineering, Lagos State University, Lagos Nigeria. Email: comfortobolajoko@yahoo.com

Abstract

This paper discusses a simple, reliable and cheap way of achieving Amplitude Modulation (AM) using a square law method. Amplitude modulation is a technique used in electronic communication most commonly for transmitting information via a . This is achieved by varying the strength of the carrier signal in relation to the information being sent. Hence, the changes in the maximum and minimum values of carrier signal result to the varying modulating index at 0.5 ms/Div sweep on the Oscilloscope screen in which the respective waveforms were displayed ranging from 47.4% to 100% at 1 KHz and 200 KHz modulating and Carrier frequencies respectively.

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