Fundamentals of Electromagnetics with Engineering Applications
1st Edition
ISBN: 9780470105757
Author: Stuart M. Wentworth
Publisher: Wiley, John & Sons, Incorporated
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Chapter 7, Problem 7.4P
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Imagine a two-dimensional system in which a sinusoidal waveform is excited at the exact center of a circular plate. The standing wave pattern is established when the excited wave two-dimensionalwaveforms for a stable equilibrium pattern of constructive and destructive interference with the reflected waves from the edge of the circular plate. Draw what you expect the standing wave patterns to look like in this two-dimensional system for increasing resonant harmonics, n. Explain what characteristics of the oscillating plate affect the value of those resonancefrequencies, and what geometric properties of the plate affect the patterns.
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An additional 2-kHz signal modulates the carrier with m = 0.2. Sketch
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Chapter 7 Solutions
Fundamentals of Electromagnetics with Engineering Applications
Ch. 7 - Find the cutoff frequency for the first eight...Ch. 7 - Prob. 7.2PCh. 7 - Prob. 7.3PCh. 7 - Calculate uG the wavelength in the guide, and the...Ch. 7 - Consider WR975 filled with polyethylene. Find (a)...Ch. 7 - Plot up and wavelength in the guide as a function...Ch. 7 - WR90 waveguide is to be operated at 16 GHz....Ch. 7 - Prob. 7.8PCh. 7 - Prob. 7.9PCh. 7 - Suppose a length of WR137 waveguide operated at...
Ch. 7 - Prob. 7.11PCh. 7 - Prob. 7.12PCh. 7 - Find an expression for the magnetic field of the...Ch. 7 - Prob. 7.14PCh. 7 - Prob. 7.15PCh. 7 - Prob. 7.16PCh. 7 - Compose a program that will plot the left and...Ch. 7 - Prob. 7.18PCh. 7 - Prob. 7.19PCh. 7 - Prob. 7.20PCh. 7 - Prob. 7.21PCh. 7 - Prob. 7.22PCh. 7 - Prob. 7.23PCh. 7 - Prob. 7.24PCh. 7 - Prob. 7.25PCh. 7 - Prob. 7.26PCh. 7 - Suppose nf=1.475 and nc=1.470. Determine the...Ch. 7 - Prob. 7.28PCh. 7 - Prob. 7.29PCh. 7 - Prob. 7.30PCh. 7 - Assume that the coupling efficiency from a typical...Ch. 7 - Prob. 7.32PCh. 7 - Prob. 7.33P
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- 2) Find the first 4 modes of cut off frequency for the wave guide WR187.With the help of table given below.arrow_forward(a) A 1 MHz carrier with an amplitude of 1V is modulated by a 1 kHz signal with m=0.5. Sketch the voltage spectrum. (b) An additional 2 kHz signal modulates the carrier with m=0.2. Sketch the new spectrum.arrow_forwardDesign a microstrip for a 50 ohms characteristic impedance. Use h=1.6mm epoxiglass substrate. Calculate the the wavelenght of a 2GHz signal in this waveguide.arrow_forward
- For a single-frequency sine wave modulating signal of 15 kHz with a carrier frequency of 60 MHz, what is the spacing between sidebands? Round the final answer to the nearest whole number. kHzarrow_forwardDetermine the ratio of the area of a circular wave guide to that of a rectangular one, if both are to have same cut-off frequency for the dominate mode.arrow_forward3. The visible light wavelength is from 400 nm to 700 nm. Express this band in term of frequency in THz in air.arrow_forward
- A sinusoidal wave m(t) = 15csin2500nt, is applied to an FM generator that has a frequency modulation constant of 50 Hz/volt. Determine the frequency deviation and modulating index.arrow_forwardA rectangular waveguide has a dimension of 3cm by 2 cm is used to transmit a signal of 8 GHz. Determine cutoff frequency under dominant mode.arrow_forward3) Solve the cutoff frequency for the first mode and second mode of WR975 Wave guide TABLE 7.1 Some Standard Rectangular Waveguides Waveguide de signation a (in) b (in) t (in) fe, (GHz) Frequency range (GHz) WR975 9.750 4.875 0.125 0.605 0.75-1.12 WR650 6.500 3.250 0.080 0.908 1.12–1.70 WR430 4.300 2.150 0.080 1.375 1.70-2.60 WR284 2.840 1.340 0.080 2.08 2.60-3.95 WR187 1.872 0.872 0.064 3.16 3.95-5.85 WR137 1.372 0.622 0.064 4.29 5.85-8.20 WR90 0.900 0.450 0.050 6.56 8.2–12.4 WR62 0.622 0.311 0.040 9.49 12.4–18arrow_forward
- 3. Generate a square wave of 0.5Hz with a duty of 50% on pin P1.0 as XTAL = 12 MHz. U1 12DXINT PODADO P0.1/AD1 PO 2/AD2 18 XTAL2 PO.3/AD3 P0.4/AD4 34 PO.S/ADS PO.6/AD6 9 32 RST PO.7/AD7 P2.0IAS 21 P2.1/49 P22/A10 PSEN ALE P2 3/A11 P2.4/A12 P2.5/A13 P2.6/A14 25 26 EA 20 P2.7/A15 10 P1.0 2 P1.1 P12 P1.3 P3.ORXD P3 1/TXD11 P32TS 12 P3.3ANT113 P1.4 P1.5 P34/7014 P15/T1 P3.6WR 15 16 17 P1.6 P1.7 P3.7/RD 50651 4 4 I R1 0.01 R2 0.01k D2 LED-BIBY D1 â– LED-BIBY 30 31 -2.1arrow_forwardGood day! Please help me understand how series modulator work in obtaining AM wave. Explain the flow of the circuit as well as the functions of the components. Need ASAP. Thank you so much!arrow_forward42 Modulation is dune in A. Tramamitter Radio veceiver C. Between transmitter and radio receiver D. None of the above 43. At 100 modulation, the power in each sidehands in AY 50% B. 40% C. 60% D 25% 44 In a TV tranumission, picture is modulated A. Frequency B. Phase CT Amplitade D. None of the above of that of carrier. 45. Given a sine wave modulating signal, PM moduluted wave appears to be frequency modulated by cosine modulating wave. A. True B. Falsearrow_forward
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