Fundamentals of Electromagnetics with Engineering Applications
1st Edition
ISBN: 9780470105757
Author: Stuart M. Wentworth
Publisher: Wiley, John & Sons, Incorporated
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Chapter 9, Problem 9.24P
To determine
The insertion loss for a T-filter at
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Q: Assume you have the modulated signal of ø(t) =
A sin(4000nt + 90) + Bsin(3600nt + 90) + Bsin(4400nt + 90).
Find the A&B values if the sideband powers are 5% of the total power.
Assume the carrier power is 75 w.
Problem 4.
The carrier c(t) = A cos(2710°) is angle modulated (PM or FM) by the sinusoid signal
m(t) = 2 cos(2000лt). The deviation constants are K=2.5 rad/V and K+= 2500Hz/V.
(a) Determine the modulation index ẞp and Br
(b) Determine the bandwidth in each case using Carson's rule.
(c) Plot the spectrum of the modulated signal in each case, i.e., plot only those frequency components included in the
bandwidth derived in (b).
(d) If the amplitude of m(t) is decreased by factor of 2. How would you answers to (a)-(c) change?
(e) If the frequency of m(t) is increased by a factor of 2. How would you answers to (a)-(c) change?
(a) In a Single Side Band (SSB) generator the side filter center is 2 MHz. Since the information signal is 4 kHz, what should be the carrier frequencies for the upper and lower sidebands?
(b) Compare AM Independent Side Band (ISB) and AM Single Side Band Reduced Carrier (SSBRC) techniques and write down their differences?
Chapter 9 Solutions
Fundamentals of Electromagnetics with Engineering Applications
Ch. 9 - Given a 2.0-cm length of AWG20 copper wire, (a)...Ch. 9 - Recalculate L, Cx, and fSRF if the AWG3O wire for...Ch. 9 - Estimate L and the SRF if a 99.8% iron core is...Ch. 9 - Prob. 9.5PCh. 9 - Prob. 9.6PCh. 9 - Prob. 9.7PCh. 9 - If the 2.2-nF capacitor of Example 9.3 has an area...Ch. 9 - Prob. 9.9PCh. 9 - What is the spectral bandwidth for a 4.0-ns rise...Ch. 9 - Prob. 9.11P
Ch. 9 - Prob. 9.13PCh. 9 - Repeat Example 9.5 using AWG22 wire and 200-MHz...Ch. 9 - Prob. 9.15PCh. 9 - Prob. 9.16PCh. 9 - Prob. 9.17PCh. 9 - Shielding low-frequency magnetic fields often...Ch. 9 - Prob. 9.21PCh. 9 - Prob. 9.22PCh. 9 - Prob. 9.23PCh. 9 - Prob. 9.24PCh. 9 - Determine the insertion loss at 40 MHz for a...
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- For single-sideband production in AM SSBSC, three transmitter configurations are typically used: the filter approach, the phase-shift method, and the so-called third method. A bandpass filter circuit is used in the filter method to reject one sideband and transmit the remaining sideband. The modulating signal and carrier are applied directly to one of the modulators in the phase-shift method, then both are moved 90 degrees and applied to the second modulator. The outputs of the two balanced modulators are double-sideband suppressed-carrier signals with the proper phase, so that one of the sidebands is canceled when they are combined in a linear summer. The disadvantage of single-sideband transmission is which of the following statements? Select your answer. Tuning single-sideband receivers is more difficult and precise than tuning DSBSC AM receivers. Because most single-sideband transmissions involve a suppressed carrier, envelope detection cannot be employed unless the carrier is…arrow_forwardAn input power of P = 3 W is fed to a 75 km conductor. A repeater is present at 40 km from transmitter and has a gain of 70 dB. The conductor has a of 3 dB/km. The power received at receiver side is: (a) -140.23 dBm (b) -120.23 dBm (c)-110.23 dBm (d) -150.23 dBmarrow_forward6. A400W, 1MHZ carrier is amplitude-modulated with a sinusoidal signal Of 2500HZ. The depth of modulation is 75%. Calculate the sideband frequencies, bandwidth, and power in sidebands and the total power in modulated wave. 5 band wid tharrow_forward
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- Given two branch parallel circuit below. Assumed that Rc is negligible, R1 = 82, X,= 7.53N at f= 400cps, Xc fc = 400cps, and Er = 30V. Calculate the: a. Resonance frequency of the circuit b. Line current c. Inductor and capacitor branch currentarrow_forward-The modulating signal 2cos (2 π×103 t) is used to modulate a carrier signal 40cos (2 π×104t). Evaluate the modulation index, percentage modulation, frequency of side band components and their amplitudes .What is the bandwidth of a modulating signal.arrow_forwardwhy do I get the self resonance graph of a inductor in a tank circuit instead of the resonance frequency of the tank circuit as a whole? Does it mean that capacitor l'm using is too small?arrow_forward
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