Q. USB (Upper Side Band) is the band of frequency- Published on 13 Oct 15a. Above the carrier frequency
b. Includes the carrier frequency
c. That lies in AM spectrum
d. Both a and c are correct
ANSWER: Both a and c are correct
USB (Upper Side Band) is the band of frequency above the carrier frequency that lies in AM spectrum. It is a part of the shifted spectrum obtained after amplitude modulation. It is denoted by ω
c+ ω
m where ω
c is the carrier frequency and ω
m is the modulating frequency.