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Q#1
Analog Communication
GATE EC 2025
MSQ
+1 mark
-0 marks
Consider a message signal which is bandlimited to , where is in Hz. Consider the following two modulation schemes for the message signal:
- Double sideband-suppressed carrier (DSB-SC):
- Amplitude modulation (AM):
Here, and are the amplitude and frequency (in Hz) of the carrier, respectively. In the case of AM, denotes the modulation index.
Consider the following statements:
(i) An envelope detector can be used for demodulation in the DSB-SC scheme if for all .
(ii) An envelope detector can be used for demodulation in the AM scheme only if for all .
Which of the following options is/are correct?
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| Topic | Questions | Attempted | Correct | |
|---|---|---|---|---|
| Network Analysis | 273 | 0 | 0 | |
| Electronic Devices | 224 | 0 | 0 | |
| Analog Electronics | 395 | 0 | 0 | |
| Digital Electronics | 352 | 0 | 0 | |
| Signals and Systems | 263 | 0 | 0 | |
| Control Systems | 264 | 0 | 0 | |
| Communication System | 340 | 0 | 0 | |
| EMFT - ECE | 273 | 0 | 0 | |
| Engineering Mathematics | 280 | 0 | 0 | |
| General Aptitude | 240 | 0 | 0 |