Question
Download Solution PDFWhich of the following systems is analog?
This question was previously asked in
URSC ISRO Technical Assistant Electronics 13 November 2016 Official Paper
Answer (Detailed Solution Below)
Option 4 : PAM
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Download Solution PDF- Analog modulation is a process in which analog low-frequency baseband signals (like an audio or TV signal) are transmitted over a larger distance without getting faded away, by superimposing over a higher frequency carrier signal such as a radio frequency band.
- Different modulation techniques are explained with the help of the following block diagram:
- If the amplitude of a pulse or duration of a pulse is varied according to the instantaneous values of the baseband modulating signal, then such a technique is called as Pulse Amplitude Modulation (PAM).
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