![]() ![]() Electromagnetic Waves (usually Radio Waves) are used in wireless communication to carry the signals.Īn Electromagnetic Wave consists of both electric and magnetic fields in the form of time varying sinusoidal waves. Electromagnetic Waves include Gamma Rays (γ – Rays), X – Rays, Ultraviolet Rays, Visible Light, Infrared Rays, Microwave Rays and Radio Waves. What is Electromagnetic Wave?Įlectromagnetic Waves carry the electromagnetic energy of electromagnetic field through space. Hence, both transmitter and receiver consists of an antenna. These Electromagnetic Waves propagates through space. If there is no physical medium, then how does wireless communication transmit signals? Even though there are no cables used in wireless communication, the transmission and reception of signals is accomplished with Antennas.Īntennas are electrical devices that transform the electrical signals to radio signals in the form of Electromagnetic (EM) Waves and vice versa. Since, space only allows for signal transmission without any guidance, the medium used in Wireless Communication is called Unguided Medium. On the other hand, Wireless Communication doesn’t require any physical medium but propagates the signal through space. Such type of medium is called Guided Medium. which guides the signal to propagate from one point to other. In Wired Communication, the medium is a physical path like Co-axial Cables, Twisted Pair Cables and Optical Fiber Links etc. Types of Wireless Communication SystemsĬommunication Systems can be Wired or Wireless and the medium used for communication can be Guided or Unguided.Basic Elements of a Wireless Communication System.Disadvantages of Wireless Communication.A Brief History of Wireless Communication.
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