Engineering Electromagnetics
9th Edition
ISBN: 9780078028151
Author: Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher: Mcgraw-hill Education,
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Chapter 14, Problem 14.21P
To determine
(a)
The values of
To determine
(b)
The values of
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A parabolic reflector focuses electromagnetic waves into a beam as shown in the figure. The electromagnetic radiation is pulsed,
with a pulse frequency of 16.0 GHz, and the duration of each pulse is t = 1.00 ns. The face of the reflector has a radius of
5.00 cm, and the average power during each pulse is 20.0 kW. (Due to the nature of this problem, do not use rounded
intermediate values in your calculations-including answers submitted in WebAssign.)
(a) What is the wavelength (in cm) of these electromagnetic waves?
cm
(b) What is the total energy (in µJ) contained in each pulse?
(c) Compute the average energy density (in mJ/m³) inside each pulse.
mJ/m³
(d) Determine the amplitude of the electric field (in kV/m) and magnetic field (in µT) in these electromagnetic waves.
Emax
kV/m
%3D
B max
HT
(e) Assuming that this pulsed beam strikes an absorbing surface, compute the force (in uN) exerted on the surface during the
1.00 ns duration of each pulse.
µN
perform the indicated apera tions.
3.)BB14 t 613.812=
%3D
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this question is related to optoelectronics. Define a wavevector and give its mathematical relation.
Chapter 14 Solutions
Engineering Electromagnetics
Ch. 14 - A short dipole-carrying current I0 cos t in the az...Ch. 14 - Prepare a curve, r vs. in polar coordinates,...Ch. 14 - Prob. 14.3PCh. 14 - Write the Hertzian dipole electric field whose...Ch. 14 - Prob. 14.5PCh. 14 - Prob. 14.6PCh. 14 - Prob. 14.7PCh. 14 - Prob. 14.8PCh. 14 - A dipole antenna in free space has a linear...Ch. 14 - Prob. 14.10P
Ch. 14 - A monopole antenna extends vertically over a...Ch. 14 - Find the zeros in for the E-plane pattern of a...Ch. 14 - Prob. 14.13PCh. 14 - For a dipole antenna of overall length 2l=,...Ch. 14 - Prob. 14.15PCh. 14 - Prob. 14.16PCh. 14 - Consider a lossless half-wave dipole in flee...Ch. 14 - Prob. 14.18PCh. 14 - Prob. 14.19PCh. 14 - A two-element dipole array is configured to...Ch. 14 - Prob. 14.21PCh. 14 - Prob. 14.22PCh. 14 - Prob. 14.23PCh. 14 - Prob. 14.24PCh. 14 - Prob. 14.25PCh. 14 - Prob. 14.26PCh. 14 - Consider an n-element broadside linear array....Ch. 14 - A large ground-based transmitter radiates 10 kW...Ch. 14 - Signals are transmitted at a 1-m carrier...Ch. 14 - Prob. 14.30P
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