Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • Explain any two reasons justifying the need of modulating a message signal before transmission in a communication system.      

Explain any two reasons justifying the need of modulating a message signal before transmission in a communication system.

 

 

 
 
 
 
 

Answers (1)

(i) Mixing up of signals from different transmitters.

\Rightarrow Suppose, many transmitters are transmitting baseband information signals simultaneously.

\Rightarrow All there signals will get mixed up.

\Rightarrow So, if the original low-frequency baseband message or signal is translated to high-frequency wave, mixing up of signals can be avoided.

(iii) Effective power radiated by the antenna

\Rightarrow The power radiated is proportional to \left ( \frac{l}{\lambda } \right )^{2}, where l is the length of the antenna and \lambda is the wavelength.

\Rightarrow The effective power radiated by the long-wavelength signal is small. So, connecting the baseband signal to high frequency is needed.

Posted by

Safeer PP

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Results 2024: Marks verification from 4th day of result declaration; board issues schedule
anam-khan

CBSE 10th, 12th results 2024 ‘shortly’; board issues Digilocker access code for students
anam-khan

CBSE Class 10, 12 results 2024 likely after May 20, says result portal

Latest Question