A wireless booster, also known as a WiFi extender or WiFi amplifier, is an electronic device similar to your home or office router. Its job is to receive a wireless signal, amplify it, and broadcast it again. Out of these, the amplification phase is the most important.
Desktop computers, laptops, and mobile devices have tiny wireless chips with built-in antennas. In most situations, they do a good job, but they become inadequate as soon as you move farther away from the wireless signal source. In comparison, a wireless signal booster has two large antennas — one for receiving and one for broadcasting — which can be either built-in or external.
The signal amplification electronic circuit works like a microphone, making weak signal strong.
A wireless booster can be used to strengthen an existing WiFi network and bring strong internet signal to all corners of a house or an office. You simply connect a WiFi booster to your network — just like you would a smartphone — and it will automatically start broadcasting. Most wireless signal boosters on the market are designed to be easily extendable.
Let’s say that you would like a rock solid internet connecting in every room in your house, including the basement and the attic. The chances are that a single wireless signal booster wouldn’t be able to cover everything on this own. But two, three, or even four boosters are guaranteed to do the trick.