Amplitude Modulation, Frequency Modulation, and Phase Modulation.
by 0 •Amplitude modulation is the process of changing the amplitude of carrier signals as required and the frequency and phase remain constant. •Used for radio signal …
by 0 Author: Rambinay
by 0 What is Modulation? Why Modulation is required?
by 0 Modulation is a process of conversion of one form of signal to another form such that the modulated signal is suitable for transmission. There are …
2071 Chaitra(Q)Explain the Shannon channel capacity theorem. Write down the theoretical limitations of this theorem.
by 0 The bandwidth and the noise power limit the rate of information that can be transmitted by a channel. It says that a channel that is …
Analog and Digital Signal.
by 0 Amplitude refers to the maximum height from its base. The phrase refers to the position of the signal. And the frequency refers to the number …
Computer Network.
by 0 A Computer network is the connection of two or more computers that are interconnected by a communications channel in order to share resources ( Such …
Communication and Networking.
by 0 Communication refers to the exchange of information between sender and receiver with electronic means of communication.A communication system has five major components: Message, sender, receiver, …
Protocol hierarchy in Computer network
by 1 TELNET ->Telecommunication Network: It allows TELNET clients to access resources of the TELNET server that means it allows connecting a remote machine and runs an …
(Q). A parabolic antenna having a circular mouth is to have a gain of 1000 at the wavelength of 10 cm. Estimate the diameter of the mouth and the half-power beamwidth of the antenna.
by 0 λ = 10 cm = 0.1m Gp = 1000 Gp = 6 (D/ λ)^2 D/ λ = √( Gp /6) D = √ (1000/6)*0.1 D …
(Q). A paraboloid reflector antenna with a diameter of 20m is designed to operate at a frequency of 6GHz and illumination efficiency of 0.54. Calculate the antenna gain in decibels.
by 0 D = 20 and r = 10 m, f= 6GHz k = 0.54 λ = 3*10^8/(6*10^9) = 0.05 Now, Antenna gain GP = 4π*k*A/ λ^2 = …