‘Wireless communication’ was introduced in the 19th century and the communication technology has developed over the coming years.. In this technology, the information can be transmitted without requiring any cable or any wires through the air by the use of electromagnetic waves like RF, satellite, IR, etc.
The types of wireless technology in the present days, refers to a variety of wireless communication devices and technologies. ranging from smart phones to computers,laptops, Bluetooth Technology, tabs, printers. This article gives an overall view of wireless communication and types of wireless technology.(Introduction)
Introduction To Wireless Technology
Nowadays, wireless technological systems have been one of the vital parts of various types of wireless communication devices.This permits users to communicate even from any remote operated areas. There are various devices used for wireless communication from which some are to be mentioned like mobiles,GPS, Cordless telephones, Zigbee wireless technology,Wi-Fi, satellite television and other wireless computer parts. Current wireless phones include 3G and 4G networks, Bluetooth and Wi-Fi technologies which is an additional advancement.
Types of Wireless Technology
The different types of wireless technology mainly include satellite communication, IR wireless communication, broadcast radio,Bluetooth, Microwave radio,Zigbee etc.
1. Satellite Communication
Satellite communication is spread all over the world widely to allow users to stay connected almost anywhere on the universe. When the signal is sent near the satellite then, the satellite amplifies the signal and sends it back to the antenna receiver which is located on the surface of the earth. Satellite communication contains a couple of main components like the 1.space segment and 2.the ground segment.The ground segment consists of fixed or mobile transmission,reception and ancillary equipment and the space segment, which mainly is the satellite itself.
2. Infrared Communication
Infrared wireless technological communication information in a device or systems through infrared radiation.Infrared radiation is an electromagnetic energy at a wavelength that is longer than that of red light(which has high wavelength). It is used for TV remote control, security control, and a communication which stays within a short range. In the electromagnetic spectrum,infrared radiation (IR) lies between microwaves and visible light. So, they can be used as a source of communication at the end of the day.
For successful infrared communication, a photo LED transmitter and a photodiode receptor are very much required. So the information between the source and the target is transferred through this way. The source and destination can be TVs,mobile phones, security systems,computers, laptops and etc.
3. Broadcast Radio
The first wireless technological communications is the open radio communication to seek out widespread use, and it still serves a purpose in recent years. Handy multi channel radios permit a user to speak over short distances, whereas citizen’s bands offer communication services for sailors.
Wi-Fi is a wireless communication used by various electronic devices like smartphones,laptops, Ipads etc.In this particular setup, a router works as a communication hub wirelessly. These networks allow users to be connected only within close proximity to a router. WiFi is very common in networking applications which affords portability without a wire. These networks require to be protected with passwords for the purpose of its security, otherwise it will be accessed by other people.
5. Microwave Communication
Microwave wireless communication is an effective communication that mainly uses radio waves.The wavelengths of radio waves are measured in centimeters(cm). In this communication,the information can be transferred using two methods. One is the terrestrial method and the other one is the satellite method .
Satellite method, the data can be transmitted through a satellite that orbits 22,300 miles above this earth. Stations on the earth receive and send data signals from the satellite. It has a frequency ranging from 11GHz-14GHz and with a transmission speed of 1Mbps to 10Mbps.The main disadvantage of microwave signals is, they can be sometimes highly affected by bad weather, especially when the weather is rainy.
6. Bluetooth Technology
The Bluetooth technology is used for exchanging data between mobile and other devices wirelessly to a system for the transferring of data.Cell phones are connected to hands free earphones,mouse,wireless keyboard. By using a Bluetooth device the information from one device to another device. This technology has various functions.
Advantages of Wireless Technology
- Any data or information can be transmitted faster and with a high speed
- Maintenance and installation is less costly for these networks.
- The internet can be accessed from anywhere wirelessly.
- It is very helpful for workers, doctors working in remote areas as they can be in touch with medical centers.
Disadvantages of Wireless Technology
- An unauthorized person can easily capture the wireless signals which spread through the air.
- It is very important to secure the wireless network so that the information cannot be misused by unauthorized users
Wireless Communication Based Projects
Wireless communication based projects mainly include different technologies like Bluetooth,, GSM, GPS,RFID and Zigbee projects which are listed below:
- Android Based Smart Phone Used for Induction Motor Control
- Smart Phone Controlled Traffic Signal Override with Density Sensing System
- Arduino based Home Automation
- Phone Controlled Load Management System
- Wireless Message Communication between Two Computers
- Dialed Telephone Number LED Based Display System
- DTMF based Load Control System
- Dedicated Message Communication Wirelessly between Two Computers
- Robotic Vehicle Movement By Cell Phone
- Android based Remotely Programmable Sequential Load Operation
- Remotely Controlled Android based Electronic Notice Board
- Remote Operated Domestic Appliances Control by Android Application
- Remote Password Operated Security Control by Android Applications
- Home Automation by Android Application based Remote Control
This is all about the types of wireless technology above. Things are even more easier than before nowadays. Cordless has helped us out more in this. Of Course we need to be grateful to those makers who come up with different unending technologies every time.