Table of Contents
Electronic communication systems are growing day by day and year by year. In ancient times, pigeons were used to carry messages. In the mid-1900s, telegrams came into existence, and now we are using 5G smartphones.
Also Check: Friction
In this article, we will study the electronic communication system, its types and terminologies used in the communication system.
Communication Systems In Electronics
Communication refers to sending, receiving and processing data among two devices. When a group of devices work together to develop a connection between the sender and recipient, that is known as a communication system. Some examples of communication systems are radio, television, satellite, wireless telegraphy, mobile phones etc.
Principles Of Electronic Communication System
With the help of electronic circuits, information is transmitted, processed and received among two or more points. The fundamental parts of an electronic communication system are transmitters, communication channels, a receiver and a noise maker.
Also Check: Speed and Velocity
Types Of Electronic Communication System
Electronic communication systems are divided into different types. Based on the direction of communication, there are three types of electronic communication systems. These are Simplex, Half duplex and Full duplex systems.
Also Check: Insulator
Based on the nature of the signal, these are classified as digital, wired, wireless and analogue.
Digital Communication System
There is a huge importance of digital communication systems nowadays. In a digital communication system, digital signals are used between both the input and output. Digital signal only consists of discrete values.
Advantages of digital communication system
- Errors are fewer which are introduced by noise interference, as the signals are digital. Therefore, we can say that digital communication is noise-resistant.
- Digital communication is very easy and least expensive.
Also Check: Conductor & Insulator
Disadvantages of digital communication system
- The operation of digital systems takes place at high data rates, so there is a need for more channel capacity.
Analog Communication System
Analogue signals are used in analogue communication systems. In analogue communication systems, there is a transmission between the transmitter and the receiver. Any kind of data can be transmitted by analogue signals. A continuous signal is used in analogue communication systems.
Advantages of analogue communication system
- The receivers and transmitters are simpler.
- The requirement of bandwidth is low.
Disadvantages of analogue communication systems
- Noise and signal cannot be separated by analogue communication systems.
Also Check: Digital Electronics
Wired communication system
In a wired communication system, data transference occurs through a wired link. Some applications of wired communication systems are cable and tv for internet systems, fibre optic cables for phones, etc.
Non-wired communication system
There is no need for wire cables for non-wired communication systems. This type of communication is run through a wireless signal. These include radio waves, electromagnetic waves and infrared waves through which we communicate from one point to another point.
Block diagram of electronic communication system
The above diagram shows the signal input and how it flows from source to the destination.
Basic terminology used in electronic communication system
There are many terminologies used in electronic communication system. These are discussed as below:
- Information: The entity that has to be transmitted is any message or information. It can be audio, video, pressure, picture, temperature etc.
- Signal: Signal can be defined as a piece of information. This information is converted into an electrical form.
- Transducer: A transducer is used to convert one form of energy into another. If we talk about electrical transducers, they convert physical variables (pressure, force, temperature, etc.) into electrical signals. Example- microphone.
- Amplifier: The amplifier increases the amplitude of the transmitted signal. If the distance between the source and receiver is large, resulting in the signals that are reaching the receiver being too weak, an amplifier is added between the two so that the receiver receives the strong signals
- Modulator: When a message signal is superimposed with a carrier wave, this process is called modulation. And wave generated is called a modulated wave, which is to be transmitted.
- Transmitter: The transmitter is used to broadcast the receiving signal. It processes the message signal into an appropriate form.
- Antenna: It is a device that receives waves.
- Channel: There is a need for a physical medium so that the signals can be passed from the transmitter to the receiver. These can be wires, cables, etc.
- Noise: Basically, noise is the interference that interferes with the processing and transmission of messages in a communication system.
- Attenuation: When there is a problem which is caused by the medium, that is called attenuation, it reduces the power of the signal.
- Receiver: The message that is transmitted has to be reached to the end of the channel. The arrangement where it has to be reached is called receiver.
- Demodulation: When the information is separated from the carrier wave, this process is called demodulation.
- Repeaters: Transmitted signals are sent to the repeaters, the repeaters amplify it and send it to the next repeater without disturbing the signal. These are placed between the transmitters and receivers.
Electronic communication FAQs
Name two different types of electronic communication media.
Email and social media. Email is used to write short messages, we can attach links in email, send photographs. It is an easy way of communication. Social media: Facebook, my space, Twitter are used by many news groups for the purpose of communication. It includes live videos, pictures etc. Users can post messages in that groups also.
What do you mean by electronic communication system?
When the process of sending, receiving and processing takes place through electronic circuits, those system is known as electronic communication system.
Name two basic types of electronic communication system.
Analog communication system, Digital communication system
What are the elements of a communication system?
The elements used are- Information source, Transducer, Transmitter, Channel, Receiver, Output transducer
