Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Questions  >  The signal m(t) = cos(ωmt) is SSB (sing... Start Learning for Free
The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector is
  • a)
    cos(ωmt)
  • b)
    sin(ωmt)
  • c)
    cos(ωmt) + sin(ωmt)
  • d)
    1
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The signal m(t) = cos(ωmt) is SSB (single side-band) modulated w...
1) General equation of SSB modulated wave:
2) Output of envelope detector to signal
Acos ωct → A
Application:
Equation of SSB modulated signal
Ac = Am = 1
the output of envelope detector = ½
The output of the envelope detector is a constant voltage signal
Hence option (d) which represents a constant voltage is correct.
Free Test
Community Answer
The signal m(t) = cos(ωmt) is SSB (single side-band) modulated w...


Modulation Process:
- The SSB modulation process involves suppressing one of the sidebands to reduce bandwidth usage.
- In this case, the message signal m(t) = cos(ωmt) is SSB modulated with a carrier cos(ωct) to get s(t).

Ideal Envelope Detector:
- An envelope detector is used to demodulate an AM signal by extracting the envelope of the modulated signal.
- When the SSB modulated signal s(t) is passed through an ideal envelope detector, the output is the envelope of the signal.

Output of Envelope Detector:
- The output of the envelope detector for a cosine input signal is the absolute value of the input.
- Therefore, when the SSB modulated signal s(t) = cos(ωmt) * cos(ωct) is passed through the envelope detector, the output will be the absolute value of the input signal.
- The absolute value of a cosine signal is always positive and equal to the original signal.
- Hence, the output of the ideal envelope detector will be cos(ωmt).

Therefore, the correct answer is option 'A' - cos(ωmt).
Attention Electronics and Communication Engineering (ECE) Students!
To make sure you are not studying endlessly, EduRev has designed Electronics and Communication Engineering (ECE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electronics and Communication Engineering (ECE).
Explore Courses for Electronics and Communication Engineering (ECE) exam

Top Courses for Electronics and Communication Engineering (ECE)

The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector isa)cos(ωmt)b)sin(ωmt)c)cos(ωmt) + sin(ωmt)d)1Correct answer is option 'A'. Can you explain this answer?
Question Description
The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector isa)cos(ωmt)b)sin(ωmt)c)cos(ωmt) + sin(ωmt)d)1Correct answer is option 'A'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector isa)cos(ωmt)b)sin(ωmt)c)cos(ωmt) + sin(ωmt)d)1Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector isa)cos(ωmt)b)sin(ωmt)c)cos(ωmt) + sin(ωmt)d)1Correct answer is option 'A'. Can you explain this answer?.
Solutions for The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector isa)cos(ωmt)b)sin(ωmt)c)cos(ωmt) + sin(ωmt)d)1Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electronics and Communication Engineering (ECE). Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free.
Here you can find the meaning of The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector isa)cos(ωmt)b)sin(ωmt)c)cos(ωmt) + sin(ωmt)d)1Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector isa)cos(ωmt)b)sin(ωmt)c)cos(ωmt) + sin(ωmt)d)1Correct answer is option 'A'. Can you explain this answer?, a detailed solution for The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector isa)cos(ωmt)b)sin(ωmt)c)cos(ωmt) + sin(ωmt)d)1Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector isa)cos(ωmt)b)sin(ωmt)c)cos(ωmt) + sin(ωmt)d)1Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The signal m(t) = cos(ωmt) is SSB (single side-band) modulated with a carrier cos(ωct) to get s(t). The signal obtained by passing s(t) through an ideal envelope detector isa)cos(ωmt)b)sin(ωmt)c)cos(ωmt) + sin(ωmt)d)1Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Electronics and Communication Engineering (ECE) tests.
Explore Courses for Electronics and Communication Engineering (ECE) exam

Top Courses for Electronics and Communication Engineering (ECE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev