Wireless Transceivers
A wireless transceiver consists of a transmitter and a
receiver. In the transmitter, a process known as modulation converts electrical
digital signals inside a computer into either RF or light, which are analog
signals. Amplifiers then increase the magnitude of the signals prior to
departing an antenna. At the destination, a
receiver detects the relatively weak signals and demodulates them into data
types applicable to the destination computer. These elements, which Figure 3-1 illustrate, are found in what's
referred to as the transceiver. The transceiver is generally composed of
hardware that is part of the wireless NIC.
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