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Q#1
Analog Communication
GATE EC 2004
MCQ
+2 marks
-0.66 marks
A 100 MHz carrier of 1V amplitude and a 1 MHz modulating signal of 1V amplitude are fed to a balanced modulator. The output of the modulator is passed through an ideal high-pass filter with cut-off frequency of 100MHz. The output of the filter is added with 100 MHz signals of 1 V amplitude and 90º phase shift as shown in Figure, the envelope of the resultant signal is
constant
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