Question

In AM pilot carrier, transmission has ________

(a) carrier and part of one side band

(b) two side bands and a carrier

(c) two side bands

(d) carrier, one side band and part of other side band

This question was posed to me in an interview for internship.

I'd like to ask this question from Modulation of VSB Modulated Wave in chapter VSB Modulation of Analog Communications

Answer 1

Correct option is (b) two side bands and a carrier

The explanation is: In amplitude modulated wave, the transmitted wave has two side bands and a carrier. Thus it’s bandwidth is twice the maximum modulating frequency.