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Communication Systems..Basic Principles of Wireless Radio Communication
) cannot be efficiently radiated and do not propagate well in space. (ii) Simultaneous transmission of different signals by different transmitters would lead to confusion at the receiver. In order to solve these problems; we need to devise methods to convert or translate the audio signals to the ..
(media of infinite extent)
This type of wave propagation is said to be unguided. The uniform plane wave exists throughout all space. The electromagnetic energy associated with the wave spreads over a wide area. Wave propagation in unbounded media is used in radio or TV broadcasting where the information ..
Propagation of EM Waves in Atmosphere
(the portion of the atmosphere closest to the ground). Frequencies below the HF range travel around the curvature of the Earth, sometimes right around the globe. These ground waves, or surface waves as they are called, are one of the two original means of beyond- the- horizon propagation. All ..
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