FUNDAMENTALS OF ELECTRIC...(LL)>CUSTOM<
6th Edition
ISBN: 9781260104639
Author: Alexander
Publisher: MCG CUSTOM
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Chapter 18, Problem 63P
To determine
Find the total number of stations allowable in AM broadcasting band without interference with each other.
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Assuming that an oscilloscope displays a Vmax of 5.22V and Vmin of 1.33V. Calculate the percentage of modulation. (5 points)
Three (3) AM broadcast stations are spaced at 18 kHz, beginning at 73 kHz. Each station is allowed to transmit modulating up to 6 kHz. Compute for the upper and lower sidebands of each station and plot it in the frequency domain. (15 points)
Given a Vmax of 7.45V and a modulation index of 0.691, calculate for Vmin. (5 points)
A station is given a carrier frequency of 88 kHz. Having a modulating frequency of 12 kHz, compute for the upper and lower sidebands of the station. (5 points)
An FM signal , 2000 sin(2π x 108t + 2sin πx 104t), is applied to a 50 ohms antenna. Determine:
(a) The intelligence signal frequency.
(b) The bandwidth (using the two methods)
(c) The power in the largest and smallest side bands.
A telephone line having a bandwidth of 3 kHz is assigned for data communication. The SNR is 3150. What will be the capacity for the channel?
Chapter 18 Solutions
FUNDAMENTALS OF ELECTRIC...(LL)>CUSTOM<
Ch. 18.2 - Prob. 1PPCh. 18.2 - Prob. 2PPCh. 18.2 - Prob. 3PPCh. 18.3 - Prob. 5PPCh. 18.3 - Prob. 6PPCh. 18.4 - Prob. 7PPCh. 18.4 - Prob. 8PPCh. 18.5 - (a) Calculate the total energy absorbed by a 1-...Ch. 18.5 - Prob. 10PPCh. 18.8 - If a 2-MHz carrier is modulated by a 4-kHz...
Ch. 18.8 - Prob. 12PPCh. 18 - Prob. 1RQCh. 18 - Prob. 2RQCh. 18 - The inverse Fourier transform of ej2+j is (a) e2t...Ch. 18 - Prob. 4RQCh. 18 - Prob. 5RQCh. 18 - Prob. 6RQCh. 18 - Prob. 7RQCh. 18 - Prob. 8RQCh. 18 - A unit step current is applied through a 1-H...Ch. 18 - Prob. 10RQCh. 18 - Prob. 1PCh. 18 - Prob. 2PCh. 18 - Prob. 3PCh. 18 - Prob. 4PCh. 18 - Prob. 5PCh. 18 - Prob. 6PCh. 18 - Prob. 7PCh. 18 - Prob. 8PCh. 18 - Prob. 9PCh. 18 - Prob. 10PCh. 18 - Prob. 11PCh. 18 - Prob. 12PCh. 18 - Prob. 14PCh. 18 - Prob. 15PCh. 18 - Prob. 16PCh. 18 - Prob. 17PCh. 18 - Given that F=Fft, prove the following results,...Ch. 18 - Prob. 19PCh. 18 - Prob. 21PCh. 18 - Prob. 22PCh. 18 - Prob. 23PCh. 18 - Prob. 24PCh. 18 - Prob. 25PCh. 18 - Prob. 26PCh. 18 - Prob. 27PCh. 18 - Prob. 28PCh. 18 - Prob. 29PCh. 18 - For a linear system with input x(t) and output...Ch. 18 - Prob. 31PCh. 18 - Prob. 32PCh. 18 - Prob. 33PCh. 18 - Prob. 34PCh. 18 - Prob. 35PCh. 18 - Prob. 36PCh. 18 - Prob. 37PCh. 18 - Prob. 38PCh. 18 - Prob. 39PCh. 18 - Prob. 40PCh. 18 - Prob. 41PCh. 18 - Prob. 42PCh. 18 - Prob. 43PCh. 18 - Prob. 44PCh. 18 - Prob. 45PCh. 18 - Prob. 46PCh. 18 - Prob. 47PCh. 18 - Prob. 49PCh. 18 - Prob. 51PCh. 18 - Prob. 52PCh. 18 - Prob. 53PCh. 18 - Prob. 54PCh. 18 - Prob. 55PCh. 18 - Prob. 56PCh. 18 - Prob. 57PCh. 18 - Prob. 58PCh. 18 - Prob. 59PCh. 18 - Prob. 60PCh. 18 - Prob. 61PCh. 18 - Prob. 62PCh. 18 - Prob. 63PCh. 18 - Prob. 64PCh. 18 - Prob. 65PCh. 18 - Prob. 66PCh. 18 - Given a signal g(t) = sinc(200 t), find the...Ch. 18 - Prob. 68CPCh. 18 - Prob. 69CP
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- 1. An AM standard broadcast station has a Lower sideband and an upper side band frequency of 770KHz and 780KHz, respectively. If the AM station is transmitting a frequency of 775KHz, calculate the: a. Total bandwidth occupied by the AM station.arrow_forwardAn FM transmission has a frequency deviation of 20 kHz.a. Determine the percent modulation of this signal if it is broadcast in the 88-108 MHz band. b. Calculate the percent modulation if this signal were broadcast as the audio portion of a televisionbroadcast.arrow_forwardFor an AM Radio channel, calculate the power efficiency of a system when the carrierroot-mean-square voltage is √20 V and the modulation index is 50%.arrow_forward
- You have a broadcasting station on the frequency of 107.3 MHz and radiate with a power of 230 KWatt with a 3 dBi antenna, if we have a receiver 50 km away with a receiving power of -112.28 dBm. What will be the power gain expressed in decibels of the receiving antenna.arrow_forwardAn Am broadcast station in Oman is allowed to transmit modulating frequencies up to 5 KHz. Calculate the maximum and minimum upper and lower sidebands and the total bandwidth occupied by the AM station if its transmitting frequency is 740 KHz.arrow_forwardQ5- If an AM signal is represented by, V = (10 + 2 Sin ( 2π × 5 × 103 t) ) Sin ( 2π × 0.5 × 106 t) 1- Calculate the values of the frequencies of carrier and modulating signals. 2- Calculate the value of modulation index. 3- Calculate the value of bandwidth of this signal. 4- Calculate the power in the carrier and the sidebands, if an AM signal has a total power of 48 Watts with 45% modulation.arrow_forward
- An FM transmitter is determined to have a transmitter sensitivity of 410.348Hz/V. If the modulating signal is designed to be 27.397V, and the modulation index is kept to be at 2.5, solve for the total bandwidth according to carson's rule.arrow_forwardThe 88 to 108 MHz is a popular frequency band for FM broadcasting, with a separation of 200 kHz between adjacent stations, and a peak frequency deviation of 75 kHz. Do you think 200 kHz transmission bandwidth should be sufficient for distortionless FM transmission of music signals? Explain why.arrow_forwardAnalog Communication An AM transmitter has a carrier power of 30 w.the percentage of modulation is 85 percent. Calculate the total power,sideband power,and the efficiency.arrow_forward
- Find the deviation ratio of an FM broadcast transmitter if the frequency of the modulating signal varies from 30 Hz to 20 kHz.arrow_forwardThe maximum deviation of an FM channel allowed is 15.0 kHz at frequencies up to 3.6001 kHz. Using Carson’s rule, determine the bandwidth of the FM channel. Round the final answer to two decimal places. kHzarrow_forwardAssuming that an oscilloscope displays a Vmax of 5.22V and Vmin of 1.33V. Calculate the percentage of modulation. Three (3) AM broadcast stations are spaced at 18 kHz, beginning at 73 kHz. Each station is allowed to transmit modulating up to 6 kHz. Compute for the upper and lower sidebands of each station and plot it in the frequency domain. Given a Vmax of 7.45V and a modulation index of 0.691, calculate for Vmin. A station is given a carrier frequency of 88 kHz. Having a modulating frequency of 12 kHz, compute for the upper and lower sidebands of the station.arrow_forward
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