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CWNA®: Certified Wireless Network Administrator Official Study Guide by David A. Westcott, David D. Coleman

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Chapter 3. Radio Frequency Components, Measurements, and Mathematics

IN THIS CHAPTER, YOU WILL LEARN ABOUT THE FOLLOWING:

  • Components of RF communications

    • Transmitter

    • Receiver

    • Antenna

    • Isotropic radiator

    • Intentional radiator (IR)

    • Equivalent isotropically radiated power (EIRP)

  • Units of power and comparison

    • Watt

    • Milliwatt

    • Decibel (dB)

    • dBi

    • dBd

    • dBm

    • Inverse square law

  • RF mathematics

    • Rule of 10s and 3s

  • Received signal strength indicator (RSSI)

  • Link budget

  • Fade margin/system operating margin

Radio Frequency Components, Measurements, and Mathematics
  • Two or more devices want to communicate.

  • There must be a medium, a means, or a method for them to use to communicate.

  • There must be a set of rules for them to use when they communicate. (This ...

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