Problem Statement: Principles of Communications
Modulation Problem SolvingCalculate the frequency deviation and the carrier swing of a frequency- modulated wave which was produced by modulating a 50.4 MHz carrier. The highest frequency reached by the FM wave is 50.415 MHz. Then calculate the lowest frequency reached by the FM wave. If the frequency of the modulating signal is 5 KHz, what is the bandwidth of the FM wave?
Problem Answer:
The frequency deviation is equal to 15 kHz and the carrier swing necessary is equal to 30 kHz. The lowest frequency reached by the FM wave is 50.385 MHz and the Bandwidth is equal to 40 kHz.
This content is for Premium Member. Tired of ads?
Subscribe To Unlock The Content! and Remove Ads.
- Solution: A bandpass IF filter with a 3-dB down bandwidth of 3 kHz
- Solution: What is the carrier swing when the oscillator deviates 2 kHz?
- Solution: Determine the maximum permissible value of the deviation ratio
- Solution: What is the amount of carrier swing necessary
- Solution: What will be the value of the maximum instantaneous peak power
- Solution: The AM transmitter which may be used with this antenna
- Solution: What is the modulation index due to this second wave?
- Solution: Calculate the RMS voltage of the signal
- Solution: Calculate the total radiated power with both signals applied
- Solution: Determine the frequency of the upper sideband
- Solution: How much power is at the carrier frequency?
- Solution: Estimate the bandwidth of the FM signal using Carson’s formula
- Solution: Calculate the first two pairs of sidebands for an FM signal
- Solution: Use Carsonโs rule to determine the bandwidth of an FM channel
- Solution: Solve for the highest upper sideband frequency in MHz
- Solution: What is the bandwidth of an AM signal whose carrier is 2.1 MHz
- Solution: What is the total power supplied by an AM transmitter with a carrier power of 2500 W
- Solution: Write the formula of the frequency modulation (FM)
- Solution: A carrier (fc = 100 MHz, A, = 25 V) is frequency modulated by the sine wave
- Solution: What is the maximum efficiency value for an AM system
- Solution: Calculate the carrier and modulating frequencies, the modulation index and deviation
- Solution: What is the quality factor for a 2 MHz carrier and 50 dB sideband suppression
- Solution: Determine the frequency of the modulating signal
- Solution: A 107.6 MHz carrier is frequency modulated by a 7 kHz sine wave
- Solution: Find the approximate bandwidth of the FM waveform
- Solution: Determine the frequency deviation and carrier swing
- Solution: An AM carrier wave of frequency f = 1 MHz with pack voltage of 20 V
- Solution: What is the frequency deviation and carrier swing necessary
- Solution: Write its expression and calculate power efficiency
- Solution: What will be the modulation index (ฮผ)
- Solution: What is the amplitude of the carrier?
- Solution: What is the modulation index of an FM signal having a carrier swing of 100 kHz
- Solution: What is the bandwidth of a narrowband FM signal
- Solution: What is the bandwidth (kHz) of an FM signal with 5 kHz maximum frequency deviation
- Solution: How much power at 85% modulation with an amplitude modulated transmitter
- Solution: Determine its deviation ratio
- Solution: Determine the percent modulation of an FM signal which is being broadcast
- Solution: What is the maximum phase deviation that can be present in an FM radio broadcast signal
- Solution: An FM transmitter outputs 1 kW of power when modulated by a 3 kHz sinusoid
- Solution: For a modulation coefficient m = 0.2 and an unmodulated carrier power Pc = 1000 W
- Solution: Determine the power in the sidebands as a percentage of the total power
- Solution: What is the total sideband power radiated?
- Solution: Determine the power content of each of the sidebands and of the carrier
- Solution: Find the power efficiency of an AM wave for a modulation index of 0.3
- Solution: What will be the percentage savings if the carrier is suppressed
- Solution: What would be the percentage power saving
- Solution: How much of this is the sidebands power?
- Solution: Calculate the total power supplied by an AM transmitter
- Solution: Determine the modulation index and total power radiated
- Solution: Determine the modulation index
- Solution: If modulation index is 0.6 Calculate the carrier current in antenna
- Solution: Calculate carrier power and power of each sidebands
More Questions in: Frequency Modulation problems
Online Questions and Answers in Communications Engineering per topic
P inoyBIX educates thousands of reviewers and students a day in preparation for their board examinations. Also provides professionals with materials for their lectures and practice exams. Help me go forward with the same spirit.
โWill you subscribe today via YOUTUBE?โ
TIRED OF ADS?
- Become Premium Member and experienced fewer ads to ads-free browsing.
- Full Content Access Exclusive to Premium members
- Access to PINOYBIX FREEBIES folder
- Download Reviewers and Learning Materials Free
- Download Content: You can see download/print button at the bottom of each post.
PINOYBIX FREEBIES FOR PREMIUM MEMBERSHIP:
- CIVIL ENGINEERING REVIEWER
- CIVIL SERVICE EXAM REVIEWER
- CRIMINOLOGY REVIEWER
- ELECTRONICS ENGINEERING REVIEWER (ECE/ECT)
- ELECTRICAL ENGINEERING & RME REVIEWER
- FIRE OFFICER EXAMINATION REVIEWER
- LET REVIEWER
- MASTER PLUMBER REVIEWER
- MECHANICAL ENGINEERING REVIEWER
- NAPOLCOM REVIEWER
- Additional upload reviewers and learning materials are also FREE
FOR A LIMITED TIME
If you subscribe for PREMIUM today!
You will receive an additional 1 month of Premium Membership FREE.
For Bronze Membership an additional 2 months of Premium Membership FREE.
For Silver Membership an additional 3 months of Premium Membership FREE.
For Gold Membership an additional 5 months of Premium Membership FREE.
Join the PinoyBIX community.
