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Engineering
Electrical Engineering
How does an antenna work with harmonics?
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[QUOTE="FactChecker, post: 6270852, member: 500115"] No, it does not have to be a sine wave. In fact, a rectangular wave can be thought of as a specific sum of sine (and cosine) waves of various frequencies. That is the basis of the Fourier series. The antenna will respond to each sine wave as though it was not part of a rectangular wave, then all the responses to the sine waves can be summed to get the total antenna response to the rectangular wave. Shown below is a sequence of better approximations of a square wave using more terms in the Fourier series. Each line is plotted a little higher so that you can see them separately. Clearly, the more terms there are, the closer it gets to a square wave. An antenna will respond to each sine wave as though it is alone. Then the individual responses can be summed to get the total response. [ATTACH type="full" alt="1575655092095.png"]253761[/ATTACH] [/QUOTE]
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Electrical Engineering
How does an antenna work with harmonics?
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