Author:
Evaluation:
Published: 25.05.2021.
Language: English
Level: College/University
Literature: n/a
References: Not used
  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 1.
  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 2.
  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 3.
  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 4.
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  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 12.
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  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 19.
  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 20.
  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 21.
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  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 24.
  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 25.
  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 26.
  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 27.
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  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 38.
  • Summaries, Notes 'Antennae and Propagation of Radio Waves', 39.
Extract

The E and H fields support and regenerate one another as their strength decreases inversely as the square of the distance.

Far field is composed of radiation that is free of the transmitter in the sense that (unlike the case in an electrical transformer) the transmitter requires the same power to send these changes in the fields out, whether the signal is immediately picked up or not. This distant part of the electromagnetic field is "electromagnetic radiation" (also called the far field). The far fields propagate (radiate) without allowing the transmitter to affect them. This causes them to be independent in the sense that their existence and their energy, after they have left the transmitter, is completely independent of both transmitter and receiver.
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