Fundamentals of Electromagnetics with Engineering Applications
1st Edition
ISBN: 9780470105757
Author: Stuart M. Wentworth
Publisher: Wiley, John & Sons, Incorporated
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Chapter 8, Problem 8.8P
To determine
The phasor magnetic field
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IInitial conditions are frequency 5 x106 Hz and current 1.5 A
A magnetic far field of an antenna has the form
B = Bosine/r sin(kr - wt)e+.
a) What is the phase of the wave at r = 6m when t = 0.
b) Find the associated electric field and show a method to check this.
XYZ = 675
Question 1
A XYZ ampere flows along a lamp post in the z direction at a location (0 m, Om) .
A 400 ampere flows along a lamp post in the z direction at a location (0.02 m, 0 m).
The B-field is on the x-y plane.
Find the B-vector at the location (- 0.03m, - 0.06 m), magnitude and direction, polar coordinates
Complete the following table
Current at (0 , 0) ampere Current at (0.02 m, 0 m) | B magnitude (Tesla)
B angle polar
coordinate (degrees
from x-axis counter
ampere
clockwise)
XYZ
400
XYZ + 100
400
XYZ + 200
400
XYZ + 300
XYZ + 400
XYZ + 500
400
400
400
Use Excel to plot B- magnitude on the y-axis versus current at (0,0) on the x-axis. Show data points.
Copy and paste onto docx or pdf for Blackboard submission. Is the graph linear? Explain
Use Excel to plot B-angle on the y-axis versus current at (0,0) on the x-axis. Show data points. Copy and
paste onto docx or pdf for Blackboard submission. Is the graph linear? Explain
XYZ = 675
1.
a. An electromagnetic field just at the corner of the horn antenna (one type of antenna) is given by the
expression: P = 2x*yzāx + 2xzā, .
Find divergence of this vector field at point (1, 4, 1) m. And
Also describe the behavior of the electromagnetic field at the point (2, 2, 1) m.
Chapter 8 Solutions
Fundamentals of Electromagnetics with Engineering Applications
Ch. 8 - Prob. 8.1PCh. 8 - What is the pattern solid angle and the...Ch. 8 - Sketch an appropriate cross section of the...Ch. 8 - Prob. 8.5PCh. 8 - Prob. 8.6PCh. 8 - Prob. 8.7PCh. 8 - Prob. 8.8PCh. 8 - Prob. 8.9PCh. 8 - Prob. 8.10PCh. 8 - Prob. 8.11P
Ch. 8 - Prob. 8.12PCh. 8 - Suppose in the far field for an antenna at the...Ch. 8 - Prob. 8.14PCh. 8 - Prob. 8.15PCh. 8 - Prob. 8.16PCh. 8 - How long is a 1.5 -long dipole antenna at 1.0 GHz?...Ch. 8 - Prob. 8.18PCh. 8 - Prob. 8.19PCh. 8 - Prob. 8.20PCh. 8 - Prob. 8.21PCh. 8 - Prob. 8.22PCh. 8 - Prob. 8.23PCh. 8 - Prob. 8.24PCh. 8 - Prob. 8.25PCh. 8 - Prob. 8.27PCh. 8 - Prob. 8.28PCh. 8 - Prob. 8.29PCh. 8 - Prob. 8.30PCh. 8 - Prob. 8.31PCh. 8 - How long is a 0.75 monopole antenna at 1.0 GHz?...Ch. 8 - Prob. 8.33PCh. 8 - Prob. 8.34PCh. 8 - Prob. 8.35PCh. 8 - Prob. 8.36PCh. 8 - Prob. 8.37PCh. 8 - Prob. 8.38PCh. 8 - Two small loop antennas, each oriented in the xy...Ch. 8 - Prob. 8.40PCh. 8 - Prob. 8.41PCh. 8 - Prob. 8.42PCh. 8 - A particular broadside antenna array consists of...Ch. 8 - Prob. 8.44PCh. 8 - Prob. 8.45PCh. 8 - Prob. 8.46PCh. 8 - Prob. 8.47PCh. 8 - Prob. 8.48PCh. 8 - Design an open-ended shunt-stub matching network...Ch. 8 - Prob. 8.50PCh. 8 - Prob. 8.51PCh. 8 - Prob. 8.52PCh. 8 - Prob. 8.53PCh. 8 - Prob. 8.54PCh. 8 - Prob. 8.55P
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