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Article: Signals, transducers, and modulation: a wireless design challenge: the student-designed transducers in my classes have successfully incorporated a wide range of materials, such as fabric or paper stretched across picture frames and wire loops.
- Article from:
- The Technology Teacher
- Article date:
- March 1, 2006
- Author:
CopyrightCOPYRIGHT 2006 International Technology Education Association. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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In this age of cell phones, digital television, and satellite radio, we easily forget that information and energy must undergo complex transformations to enable real-time wireless communication. This article describes a practical and proven design activity that enables secondary and post-secondary students to design and test a modulator that varies a carrier wave according to the characteristics of an audio message. This activity is adapted from a project-based activity described by the West Virginia Board of Education (1986)as the Simulated Lightwave Communication Activity. In this five-day activity, students hone their design skills and develop practical understandings ...
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