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CWDP-302 · Question #22

What is the purpose of Friis transmission equation [(LdB) = 20 log(d) + 20 log (f) - 27.55 ]?

The correct answer is C. Calculate RF path loss in free space. See the full explanation below for the reasoning.

Question

What is the purpose of Friis transmission equation [(LdB) = 20 log(d) + 20 log (f) - 27.55 ]?

Options

  • ACalculate earth bulge to determine minimum antenna height
  • BCalculate receive sensitivity for an 802.11 radio/antenna pair
  • CCalculate RF path loss in free space
  • DCalculate the loss experienced between the intentional radiator and antenna
  • ECalculate the minimum voltage requirements for lightning suppression systems

How the community answered

(25 responses)
  • A
    8% (2)
  • B
    4% (1)
  • C
    84% (21)
  • D
    4% (1)

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