How Wi-Fi Works

Friday, June 27, 2014

Computer WiFiWireless internet, or Wi-Fi, as it is commonly known, has become increasingly popular over the last few years. You can find a Wi-Fi connection, also known as a hotspot, almost everywhere. Most restaurants, hotels and fast food joints have a hotspot to attract customers as a marketing strategy, often offering free internet. You will also see many people installing wireless routers at home to create their personal hotspots.


  • There are many reasons behind the popularity of the Wi-Fi technology, one of which is the cost. You can have one router connected to a main Ethernet connection and connect a number of devices to it. Less wires means less cost and more convenience. Let’s look at how the wireless internet technology works.

How Does Wi-Fi Work?

For a wireless internet connection to work, you require two things; a wireless router and a wireless adapter. Almost every other device from an iPod to a laptop computer comes equipped with a wireless adapter. This adapter sends and receives radio signals to and from the router. The communication between a device equipped with a wireless adapter and a wireless router is much like how walkie-talkies work.


A Wi-Fi router has to be connected to an Ethernet cable for internet connectivity. Once the router is connected and turned on, it transmits radio signals at 2.4GHz or 5GHz. You can protect the radio signals emerging from the router using a password.

Radio Signals

The browsing on your device on a Wi-Fi connection and on an Ethernet connection is virtually the same. But the way your device or computer is connected is different. Initially, the router transmits data from the internet by converting it into radio signals. The wireless adapters in computers and devices receive these signals and convert them back into data which you see on the screen. Once you are done entering the data at your end, the wireless adapter converts the data back to radio signals. These radio signals travel to the router and through the Ethernet cable to the internet.

Wireless networks are easy and cheap to set up. You can purchase a router at any nearby computer store and follow the instructions to create your own hotspot. It is as easy as it sounds.