In a balanced mixer, the output _________(a) contains equal amount of all input frequencies(b) does not contain the input frequencies(c) contains the input frequencies(d) is a non-linear mixture of input signalsThe question was posed to me during an interview.The origin of the question is Noise in Pulse Modulated System topic in section Phase Locked Loop & Pulse Modulation of Analog Communications

In a balanced mixer, the output _________(a) contains equal amount of

1.	In a balanced mixer, the output _________(a) contains equal amount of all input frequencies(b) does not contain the input frequencies(c) contains the input frequencies(d) is a non-linear mixture of input signalsThe question was posed to me during an interview.The origin of the question is Noise in Pulse Modulated System topic in section Phase Locked Loop & Pulse Modulation of Analog Communications
Answer» The correct CHOICE is (b) does not contain the input FREQUENCIES Best explanation: MIXER is a device that multiples TWO signals. In a balanced mixer, the OUTPUT does not contain the input frequencies. And if it contains the frequency then mixer becomes imbalanced.

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