What is the need for modulation?
Answer Posted / srikrishna
modulation is neede basically to
i)to increase the bandwidth of the signal
ii)to multiplex the signals
iii)to reduce the interferencemade when we transmit the
signals with nearly same frequency in the audio frequency
range (20-20k)hz.
iv)to favour the complexity of the transmission system
| Is This Answer Correct ? | 444 Yes | 75 No |
Post New Answer View All Answers
I am going to face an interview in Ericssion tomorrow for implementation Manager.I need some idea on interview question
why we don't use photodiode in forward-bias?
Define what do you understand by reverse saturation current of a diode?
Why do we use distinct polarisation (UL-H:DL-V) while uplinking and downlinking rather than same (UL-H:DL-H)?
What is a comparator?
Define what is the difference between active and passive filters?
What is a combinational circuit?
What is 74ls244?
Tell me why is 400 hz used for flight instruments and radio transmission system in aviation industry universally?
How emergency call get through without coverage but not other call at that time?
What do you by interfacing in PC ?
send me cutoff of surat nit for m.tech
List out some integrating type converters.
What is transponder? Give the difference between transducer and transponder?
Why the actual q-factor of the coil is someexplain what larger than the calculated q-factor?