Principles of communicationEasy
Question
A single of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal is/are -
Options
A.2005 kHz, 2000 kHz and 1995 kHz
B.2000 kHz and 1995 kHz
C.2 MHz only
D.2005 kHz and 1995 kHz
Solution
Frequency present after modulation
fc, fc ± fs
⇒ 2000 KHz, 2005 KHz and 1995 KHz
fc, fc ± fs
⇒ 2000 KHz, 2005 KHz and 1995 KHz
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