Explore BrainMass

Explore BrainMass

    Frequency Modulation

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    1. What type of signal is represented by the code 15A3?
    2. Briefly explain the difference between phase and frequency modulation.
    3. A 15 mV sinusoid with input frequency 450 Hz is applied to an FM generator with k = 1000 Hz/20 mV. Find the positive frequency deviation.
    4. An FM signal is given by e = 40 sin (2Æ'Ã? ~106t + 10 sin 600 Æ'Ã?t). What is the carrier frequency? What is the modulation index?
    5. An FM signal 400 sin (2Æ'Ã? ~108t + 8 sin 200 Æ'Ã?t) is applied to a 100 Æ'¶ antenna. What is the transmitted power?
    6. The maximum deviation in broadcast FM is 75 kHz. Suppose that a commercial FM system has modulating frequencies 40 Hz to 20 kHz. What is the permissible range for the modulation index?
    7. What is the sensitivity of an FM receiver with a 100 mV quieting voltage and a voltage gain of 50,000?
    8. Consider phase locked-loop FM demodulation. What is the meaning of the term hold-in range?
    9. Name the 3 possible states of operation for a phase locked-loop.
    10. An FM station transmits at 96.5 MHz. Find the local oscillator frequency and image frequency if the receiver has a 10.7 MHz IF.

    © BrainMass Inc. brainmass.com March 4, 2021, 10:58 pm ad1c9bdddf


    Solution Summary

    This posting contains the solution to the given problems.