ADVANTAGES

Although millimeter waves allow large bandwidth, other frequencies, such as infrared and optical wavelengths, allow the ultimate in high data rates and narrow beamwidths. Unlike millimeter waves, however, these shorter-wavelength signals suffer from absorption by fog, dust, and smoke. The solution, where applicable, is to use as a wave guiding medium because it is not affected by fog or other atmospheric conditions. But there are still many situations where optical fibers cannot be used because the transmitters or receivers are mobile (such as cell phones or satellite communication) so radio-wave communications, including millimeter waves, is usually the best choice.

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