The development of wireless technology owes it all to Michael Faraday – for discovering the principle of electromagnetic induction, to James Maxwell – for Maxwell’s equations and to Guglielmo Marconi – for transmitting a wireless signal over a mile and a half. The sole purpose of Wi-Fi technology is wireless communication, through which information can be transferred between two or more points that are not connected by electrical conductors.
Wireless technologies are used since the arrival of radios, which use electromagnetic transmissions. Over time, manufacturers of consumer electronics began to think about the possibilities of automating home devices based on microcontrollers. Timely and reliable transmission of sensor data and controller commands was quickly achieved, leading to the discovery of wireless communications that we now see everywhere.
With radios being used for wireless communications in the age of world war, scientists and inventors began to focus on the means to develop wireless phones. Radio soon became available to consumers, and in the mid-1980s mobile phones began to appear. By the end of the 1990s, mobile phones gained great importance with more than 50 million users worldwide. The concept of the wireless Internet and its possibilities were then taken into account. Eventually, wireless Internet technology came into existence. This gave a boost to the growth of wireless technology, which today comes in many forms.
Applications of Wireless Technology
The rapid progress of wireless technology led to the invention of mobile phones that use radio waves to enable communication from different parts of the world. The application of wireless technology now ranges from wireless data communications in various fields, including medicine, military, etc., to wireless power transfers and the wireless interface of computer peripherals. Point-to-point, point-to-multipoint, broadcasting, etc. are now possible and easy with the use of wireless technology.
The most widely used Wi-Fi technology is Bluetooth, which uses short-wave radio transmissions to connect and communicate with other compatible electronic devices. This technology has reached a stage where wireless keyboards, mice and other peripherals can be connected to a computer. Wireless technologies are used:
The greatest benefit of wireless technology such as Wi-Fi is portability. For distances between devices where wiring is not an option, technologies such as Wi-Fi can be used. Wi-Fi communications can also provide a backup communications link in the event of network failure. One can even use wireless technologies to use data services, even if trapped in the middle of the ocean. However, a wireless technology still has slower response times compared to wired communications and interfaces. But this gap is narrowing with each passing year.
Progress in wireless technology
Wireless data communications now come in technologies such as Wi-Fi (a wireless local area network), cellular data services such as GPRS, EDGE and 3G, and mobile satellite communications. Point-to-point communication was important decades ago. But it is now possible to transmit point-to-multipoint and wireless data to multiple wirelessly connected devices. A personal computer network can now be created using Wi-Fi, which also allows data services to be shared by multiple systems connected to the network.
Wireless technologies with faster speeds at 5 GHz and transmission capabilities were quite expensive when they were invented. But now, almost all mobile phones and minicomputers come with technologies like Wi-Fi and Bluetooth, though with variable data transfer speeds. Wireless technology has grown to such an extent that even mobile phones can act as Wi-Fi access points, allowing other phones or computers connected to a particular Wi-Fi access point to share cellular data services and other information. Transmitting audio and video data wirelessly from the mobile phone to a television or computer is now a walk in the park.
Today, wireless technology is robust, easy to use and portable, as there are no cables involved. Aside from local area networks, even metropolitan area networks have begun to use wireless technology.