Types of Modulation: Advantages and Disadvantages

Topics: Modulation, Radio, Frequency modulation Pages: 3 (985 words) Published: May 4, 2012
In analog technology, compare and contrast the advantages and disadvantages of amplitude modulation, frequency modulation, phase modulation, and Quadrature Amplitude Modulation (QAM).


Electronics and Radio Today. (n.d.). Retrieved from http://www.electronics-radio.com/articles/radio/modulation/amplitude_modulation/am.php

Electronics and Radio Today. (n.d.1). Retrieved from http://www.electronics-radio.com/articles/radio/modulation/frequency_modulation/fm.php

M.S. Richer. (2006). Advantages/disadvantages/applications of various Modulation Schemes [Multimedia]. Retrieved from M.S. Richer, http://www-ee.uta.edu/dip/Courses/EE4330/comparison%20of%20modulation%20methods.pdf website.

Radio-Electronics.com. (n.d.). Retrieved from http://www.radio-electronics.com/info/rf-technology-design/modulation-techniques/itu-designations-types-of-radio-emissions-transmissions.php

Amplitude Modulation
Amplitude modulation (AM) is a technique used in electronic communication. The most common use for this is in radio. AM works by varying the strength of the transmitted signal in relation to the information being sent ("Electronics and Radio Today", n.d.). Advantages: There are several advantages of amplitude modulation, and some of these reasons have meant that it is still in widespread use today. It is simple to implement, it can be demodulated using a circuit consisting of very few components, and AM receivers are very cheap as no specialized components are needed ("Electronics and Radio Today", n.d.). Disadvantages: Amplitude modulation is a very basic form of modulation, and although its simplicity is one of its major advantages, other more sophisticated systems provide a number of advantages. Accordingly it is worth looking at some of the disadvantages of amplitude modulation. It is not efficient in terms of its power usage, it is not efficient in terms of its use of bandwidth, requiring a bandwidth equal to twice that of the highest audio...
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