Question
What output is produced by a balanced modulator?
Answer Options
- A) Frequency modulated RF
- B) Audio with equalized frequency response
- C) Audio extracted from the modulation signal
- D) Double-sideband modulated RF
Correct Answer: D
Explanation
A balanced modulator is a circuit that performs amplitude modulation but is designed to suppress the carrier signal. It does this by mixing the audio intelligence with a carrier signal in a balanced, push-pull configuration, resulting in the cancellation of the carrier frequency component.
The output produced by a balanced modulator is a Double-sideband modulated RF signal with the carrier suppressed (DSB-SC). This signal, which is later passed through a filter to become Single Sideband (SSB), contains both the upper and lower sidebands, which carry all the necessary information.
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