An AM wave expression consists of carrier and two sidebands. The carrier component of the modulated wave has the same amplitude as the unmodulated carrier. The AM modulated wave contains extra power in the two sideband...
Author - Sasikumar Raja
The foundation of all experimental science and technology is measurement. The result obtained from any measurement will contain some uncertainty. Such an uncertainty is termed error. Any calculation made using the measured values...
The concept of length in physics is related to the concept of distance in everyday life. Length is defined as the distance between any two points in space. The SI unit of length is metre. The objects of our interest vary widely...
Mathematical or Time Domain Representation of an AM Equ-1 Modulating signal Equ-2 Carrier signal Where, – Amplitude of the carrier signal (volts), and – Amplitude of the modulating signal (volts). The amplitude of...
The modulation process is required in a communication system to achieve the following basic needs Ease of radiation, Adjustment of bandwidth, Reduction in height of antenna, Avoids mixing of signals, Increases the range of...
WHY MODULATION? (i) Long distance communication The purpose of a modulation is to convert the message signal into a suitable form that matches to the transmission medium. This is necessary because the message signal is a low...
Generally signals are single valued functions of time that convey the information which may be real (or) complex valued. The main classifications of signals are as follows. (i) Continuous – Time (CT) signals The signals...
Communication is the process of establishing connection or link whereby the information is transferred from one point called as source to the other point called as destination. Two of the main barriers in communication are the...
A general communication system involves the transmission of information between two or more entities using a shared medium or channel. It typically consists of a sender that encodes a message, a transmission medium through which...
The two basic types of communications systems are: Analog communication systems, and Digital communication systems. An analog communication is a system in which the information signal is transmitted and received in an analog...
