User's Manual

19
2. Path loss
Path loss between the transmitter and receiver is a key consideration when
designing a wireless LAN solution. Expected levels of path loss, based on the
range between the transmitter and receiver, provide valuable information when
determining requirements for transmit power levels, receiver sensitivity and
signal-to-noise ratio. Actual path loss depends on the transmit frequency, and it
grows exponent ially as the distance increases between the transmitter and receiver.
In addition, path loss is minimized when there exists a clear line of sight and is
lower when antennas are positioned higher. Refer to the potential obstacles to
Line of Sight as shown in Figure 3-4, Figure 3-5 and Figure 3-6.
Figure 3-4
Figure 3-5
Figure 3-6