Why use a Power Amplifier?
Power Amplifiers take the weak signals created by a wireless device’s (I.E. router, gateway, access point) transmitter circuitry and make it strong enough to traverse a longer distance to the receiver (I.E. laptop, PDA).
Power amplifiers use additional circuitry to create a more powerful outgoing signal that can travel beyond the normal 100 to 300 foot range of a wireless network, when used outdoors. Bi-directional amplifiers go one step further by incorporating a low noise pre-amplifier receiver in conjunction with the power amplifier for transmitting. This combination permits bi-directional amplifiers to significantly increase the operating range and performance of the outdoor links.
This is particularly useful at the edge of a network, where the signal is always at its weakest, because by increasing the signal strength at this point connection reliability is improved.
Usable wireless network range is increased and higher signal levels are achieved. Higher signal levels are less susceptible to noise making the number of retransmissions required to recover corrupted data packets go down resulting in less time is spent on the air.
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