Chapter 6

Radio Frequency Fundamentals for Wireless LAN Technology

The following CWTS exam objectives are covered in this chapter:

  • 1.2 Define basic characteristics of and concepts relating to Wi-Fi technology
    • Range, coverage, and capacity
    • Frequencies/channels used
    • Channel reuse and co-location
  • 3.1 Define the basic concepts and units of RF measurements, identify when they are used, and perform basic unit conversion
    • Watt (W) and milliwatt (mW)
    • Decibel (dB)
    • dBm
    • dBi
    • RSSI
    • SNR
  • 3.2 Identify and explain RF signal characteristics
    • Frequency
    • Wavelength
    • Amplitude
    • Phase
  • 3.3 Identify factors which affect the range and rate of RF transmissions
    • Line-of-sight requirements
    • Interference (Wi-Fi and non-Wi-Fi)
    • Environmental factors, including building materials ...

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