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CWNA: Certified Wireless Network Administrator Official Study Guide: Exam PW0-105, 3rd Edition 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

Noise floor

Signal-to-noise ratio (SNR)

Received signal strength indicator (RSSI)

Link budget

Fade margin/system operating margin

To put it simply, data communication is the transferring of information between computers. No matter what form of communication is being used, many components are required to achieve a successful transfer. Before we look at some ...

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