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Q#1
Analog Communication
GATE EC 1992
NAT
+2 marks
-0 marks
A sinusoidal signal of 4 kHz frequency is used as a modulating signal for an FM and an AM transmitter. Both of the transmitters use the same amplitude for the un-modulated carrier. The peak frequency deviation in the FM transmitter is set to four times the bandwidth of the AM transmitter and, the magnitudes of the spectral components at (= carrier frequency) are same for both of the transmitters.
Determine the modulation indices for the AM and FM transmitters.
[If required use the values of the Bessel function given below:
, , ,
]
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| Topic | Questions | Attempted | Correct | |
|---|---|---|---|---|
| Network Analysis | 273 | 0 | 0 | |
| Electronic Devices | 69 | 0 | 0 | |
| Analog Electronics | 395 | 0 | 0 | |
| Digital Electronics | 351 | 0 | 0 | |
| Signals and Systems | 22 | 0 | 0 | |
| Control Systems | 224 | 0 | 0 | |
| Communication System | 200 | 0 | 0 | |
| EMFT - ECE | 14 | 0 | 0 | |
| Engineering Mathematics | 24 | 0 | 0 | |
| General Aptitude | 30 | 0 | 0 |