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What is meant by Repetition rate of an AM envelope?
Repetition rate of an AM envelope refers to the frequency of the modulating signal thus the shape of the envelope is identical to the shape of the modulating signal.
What are the difference between carrier signal modulating signal modulated signal baseband and passband?
carrier signal- use for the purpose of conveying information. modulating signal- causes variations in some characteristics of carrier signal. modulated signal - carrier signal after altration in its characteristics is called modulated signal. example- if you want to see an object (suppose it is an modulating signal),you need light(light is carrier signal) and when light will reflect on object you will be able to see if (that is modulated signal)
When a carrier is phase modulated with an integrated modulating signal the resultant is?
It gives frequency modulated signal
What is over-modulating condition in term of amplitude modulation?
When your audio modulating signal is larger than your RF carrier amplitude the peak of the modulated carrier will become flat and a distorted audio signal with flattened peaks will be send out from the detector on the receiver side
Pre-emphasis in FM systems involves?
Amplification of higher frequency component of modulating signal
What is the difference between the modulating signal and the demodulating signal in output of the detector?
Distortion.
Why is the amplitude of modulating signal kept less than the amplitude of carrier waves?
The amplitude of the modulating signal is kept less than that of the carrier wave to prevent distortion and ensure proper modulation. If the modulating signal's amplitude exceeds that of the carrier, it can lead to over-modulation, resulting in signal distortion and loss of information. This ratio helps maintain a clear and accurate transmission of the signal, allowing for effective demodulation at the receiver end. Additionally, it ensures that the carrier wave remains dominant, allowing for reliable communication.
What are two sources of distortion in telecommunication?
Two common sources of distortion in telecommunications are signal noise and multipath fading. Signal noise, caused by electromagnetic interference or thermal fluctuations, can degrade the quality of the transmitted signal. Multipath fading occurs when signals take multiple paths to reach the receiver, leading to phase differences and potential signal cancellation or reinforcement, which can distort the received signal.
What are Disadvantages of Adaptive delta modulation?
There are two major disadvantages of delta modulation: 1. Slope overload distortion: occurs when modulating signal varies faster than counter recovered signal. 2. Granular noise: occurs when variation in modulating signal is smaller than step size.
What do you mean by depth of modulation index?
The depth of modulation index refers to the extent to which a carrier signal is varied by a modulating signal in amplitude modulation (AM). It is typically expressed as a percentage and indicates how much the amplitude of the carrier wave changes in response to the modulating signal. A modulation index of 100% means full modulation, where the carrier's amplitude varies completely with the modulating signal. Values above 100% can lead to distortion and over-modulation, impacting the quality of the transmitted signal.
Why you go for modulation?
modulating signal is the low frequency signal .so we cant transmit for a long distance.so we go for modulating the signal either by modulating the amplitude or frequency or phase of the signal.
What signal is the electrical equivalent of message signal?
Modulating Signal,
In phase modulation the amount of phase shift in the carrier signal depends on the of the modulating signal and the rate of phase shift depends on the of the modulating signal?
Amplitude Frequency
What determines the bandwidth of an AM signal?
The bandwidth of an Amplitude Modulation (AM) signal is primarily determined by the frequency range of the modulating signal. Specifically, the bandwidth is typically twice the highest frequency present in the modulating signal, as AM modulates the carrier frequency by adding and subtracting the modulating frequencies. For example, if the modulating signal has a maximum frequency of (f_m), the AM signal will have a bandwidth of (2f_m). Additionally, practical factors such as filtering and transmission characteristics can influence the effective bandwidth.
What is meant by Repetition rate of an AM envelope?
Repetition rate of an AM envelope refers to the frequency of the modulating signal thus the shape of the envelope is identical to the shape of the modulating signal.
What are the difference between carrier signal modulating signal modulated signal baseband and passband?
carrier signal- use for the purpose of conveying information. modulating signal- causes variations in some characteristics of carrier signal. modulated signal - carrier signal after altration in its characteristics is called modulated signal. example- if you want to see an object (suppose it is an modulating signal),you need light(light is carrier signal) and when light will reflect on object you will be able to see if (that is modulated signal)
When signal amplitude is equal to carrier amplitude then modulation index is?
amplitude modulating signal
