What is the primary function of a modulator in a communication system?
Correct Answer: A modulator converts the baseband signal into a form suitable for transmission over a communication channel.
- Step 1: Understand what a baseband signal is. It is the original signal that contains the information we want to send.
- Step 2: Recognize that communication channels (like radio waves or cables) have specific requirements for the signals they can carry.
- Step 3: Learn that a modulator is a device that changes the baseband signal into a different form.
- Step 4: This new form is suitable for transmission, meaning it can travel effectively through the communication channel.
- Step 5: The modulated signal can then be sent over the channel to the receiver, where it will be demodulated back into the original baseband signal.
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