Fundamentals of Electromagnetics with Engineering Applications
1st Edition
ISBN: 9780470105757
Author: Stuart M. Wentworth
Publisher: Wiley, John & Sons, Incorporated
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Chapter 10, Problem 10.41P
Starting with the Figure 10.28b circuit configuration, design a third-order Chebyshev bandpass filter for a
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Q: Assume you have the modulated signal of (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.
-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.
6. 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 th
Chapter 10 Solutions
Fundamentals of Electromagnetics with Engineering Applications
Ch. 10 - A matching network consists of a length of a...Ch. 10 - Design an L-section matching network to match a...Ch. 10 - Design an L-section matching network to match an...Ch. 10 - Design an L-section matching network to match a...Ch. 10 - Suppose you want to match a 100 line to a load...Ch. 10 - Prob. 10.7PCh. 10 - Prob. 10.8PCh. 10 - Prob. 10.9PCh. 10 - Prob. 10.10PCh. 10 - Suppose the L-section matching network of Example...
Ch. 10 - Find the scattering matrices for the simple...Ch. 10 - Cut a 50- T-line and insert a series 50- resistor...Ch. 10 - Prob. 10.14PCh. 10 - A series capacitor of value C=2.0pF is inserted in...Ch. 10 - A series inductor of value L=3.5nH is inserted in...Ch. 10 - Prob. 10.17PCh. 10 - The scattering matrix (assuming a 50- impedance...Ch. 10 - Three T-lines with the same characteristic...Ch. 10 - Consider a three-port network that is matched at...Ch. 10 - Prob. 10.21PCh. 10 - Calculate the insertion loss and the VSWR for the...Ch. 10 - Prob. 10.23PCh. 10 - Verify the scattering matrix (10.27) for the...Ch. 10 - Prob. 10.25PCh. 10 - Prob. 10.26PCh. 10 - A four-port 20-dB coupler is specified as having...Ch. 10 - Suppose the coupling for an ideal symmetrical...Ch. 10 - Suppose to port 1 of an ideal ring hybrid coupler...Ch. 10 - Prob. 10.30PCh. 10 - Prob. 10.31PCh. 10 - Prob. 10.32PCh. 10 - Suppose you join a pair of quadrature hybrid...Ch. 10 - Prob. 10.34PCh. 10 - Prob. 10.35PCh. 10 - Prob. 10.36PCh. 10 - Prob. 10.37PCh. 10 - Prob. 10.38PCh. 10 - Prob. 10.39PCh. 10 - Prob. 10.40PCh. 10 - Starting with the Figure 10.28b circuit...Ch. 10 - Starting with the Figure lO.28b circuit...Ch. 10 - Prob. 10.43PCh. 10 - Starting with the Figure 10.28a circuit...Ch. 10 - Prob. 10.45PCh. 10 - For Problem 10.45, (a) design open-ended shunt...Ch. 10 - Prob. 10.47PCh. 10 - Prob. 10.48PCh. 10 - Prob. 10.49PCh. 10 - Prob. 10.50PCh. 10 - Prob. 10.51PCh. 10 - Referring to Example 10.21 and Figure 10.48,...
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- a) A Double-Sideband Amplitude Modulator is shown in fig. 1 V DC cos(2n x 2 x 105t) m(t) v,(1) Σ Figure 1arrow_forwardDraw the Full Duplex ASK diagram if the bandwidth is 18,000 Hz (500 to 18,500). Also find the carriers and bandwidth in both directions. Assume there is no gap between bands.arrow_forwardA400W, 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.arrow_forward
- Sketch the Z-plane pole- Zero plot for this filter.arrow_forward9. Consider the following receiver system for an AM-DSB-SC system:Taking into account the following design data: - The baseband is f_b = 20 kHz.- The sampling frequency in the sequence that the LP filter processes is 48 ksps. To specify the response of the required LP filter, what is the value for the pass frequency (cutoff frequency), f_p, normalized to the Nyquist frequency?arrow_forwardWhich is not true? In frequency modulation, as modulation index increases a. the bandwidth increasesb. the total power remains constantc. the total transmitted power increasesd. the number of sideband increasesarrow_forward
- (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?arrow_forwardIdentify and plot the power spectral density separately corresponding to the identified line codes which is depicted in figure below and draw the waveforms of binary data sequence {1 1 00 0 0 1} for all the formats identified. 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 ng 0.1 alo fT, (Normalized bandwidth. where T, is the pulse width) 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 Spectral density (W/Hz)arrow_forwardThe quality factor for the TE101 mode in a hollow rectangular resonator is given as; What should be the size of the resonator so that the quality factor of a hollow cubic resonator made of a conductor with a skin thickness of 0.50 nm is 25,000?arrow_forward
- 2/5 2. A sinusoidal message signal with frequency fm is applied to an FM modulator with modulation index B=3. Let the carrier be given by c(t) =10cos(27 f1). a. Find the effective bandwidth of the modulated signal. b. Determine how many harmonics should be selected to contain 75% of the modulated signal power. c. The output of the FM modulator is passed through an ideal bandpass filter centered at fe with bandwidth k.f, where k is some constant number. If k = 3, plot the spectrum of the output of the ideal bandpass filter. Also, determine the power at the filter output. Following Bessel function values may be useful: n 1 2 3 4 J, (3) - 0.260 0.339 0.486 0.309 0.132 0.043arrow_forwardPlot an AM modulated signal , that has an information signal m ( t ) = 10 sin ( 10nt ) and a carrier signal c ( t ) = 15 cos ( 1000nt ) . Calculate the modulation index ( u ) . Is it a good modulation ? If no , suggest a change in one of the signals above and calculate u again , so that it approaches ideal casearrow_forwardA sinusoidal baseband signal with a frequency of 5kHz is transmitted using DSB-LC. The received signal is R = 10[1+0.2 cos(25000r)] cos(2r10°r) Volts. The shown system is used as a receiver. The BPF is ideal and its center frequency is 1.002MHz and bandwidth 7kHz. The demodulator has input-output characteristics (V₂ = 4V/). The LPF is ideal with an adjustable cutoff frequency. Determine the output signal waveform of this system. You need to specify the cutoff frequency of the LPF to obtain the original message back at Y. R BPF Demodulator (B-4A²) LPF DC removalarrow_forward
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