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 13, Problem 13.20P
Two rectangular waveguides are joined end-to-end. The guides have identical dimensions; where a = 2b. One guide is air-filled; the other is filled with a lossless dielectric characterized by Er'- (a) Determine the maximum allowable value of er' such that single-mode operation can be simultaneously assured in both guides, at some frequency. (b) Write an expression for the frequency range over which single-mode operation will occur in both guides; your answer should be in terms of Er'. guide dimensions as needed, and other known constants.
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What are em and he modes? How do they differ from te and tem modes? What is a single mode waveguide and why is it 0th order mode?
Phase shift due to finite length of circuit conductors. On a particular type of circuit
board, assume a signal travels at 2/3 of the speed of light. Suppose a high-speed
system using this type of board can tolerate a phase shift in a sine-wave signal due
to propagation delay of only 15° before failing to work. Calculate the maximum
length /MAX (in m, or a suitable subdivision such as cm or mm) that a circuit-board
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(a) f=10MHz, (b) f=30MHz, (c) f=500 MHz, and (d) f=2.5 GHz.
(B) A commercial 50 92 Radio Shake coaxial cable is used to carry RF signal power from a
transmitter to an antenna of 300 2 as a load through flat antenna transmission line with 300 2
characterstic impedance as shown in Figure 3. The above situation would happen if we connect the
coaxial cable to the antenna without a matching techinque. Determine:
1- The reflection coefficient at junction B.
2- The input impedance at point A.
3- The reflection coefficient at junction A.
4- The fraction of the reflected power.
5- The fraction of the transmitted power to the antenna.
1²=0
5052
30052
(B)
Z₁ = 30052
Figure 3
Chapter 13 Solutions
Engineering Electromagnetics
Ch. 13 - The conductors of a coaxial transmission line are...Ch. 13 - Prob. 13.2PCh. 13 - Prob. 13.3PCh. 13 - Find R, L, C, and G for a two-wire transmission...Ch. 13 - Prob. 13.5PCh. 13 - Consider an air-filled coaxial transmission line...Ch. 13 - Pertinent dimensions for the transmission line...Ch. 13 - A transmission line constructed from perfect...Ch. 13 - Prob. 13.9PCh. 13 - Two microstrip lines are fabricated end-to-end on...
Ch. 13 - Prob. 13.11PCh. 13 - Prob. 13.12PCh. 13 - Prob. 13.13PCh. 13 - Prob. 13.14PCh. 13 - For the guide of Problem 13.14, and at the 32 GHz...Ch. 13 - Prob. 13.16PCh. 13 - A parallel-plate guide is partially filled with...Ch. 13 - Prob. 13.18PCh. 13 - Prob. 13.19PCh. 13 - Two rectangular waveguides are joined end-to-end....Ch. 13 - Prob. 13.21PCh. 13 - Consider the TE11 mode in a rectangular guide...Ch. 13 - Prob. 13.23PCh. 13 - Prob. 13.24PCh. 13 - Prob. 13.25PCh. 13 - Prob. 13.26PCh. 13 - Prob. 13.27PCh. 13 - Prob. 13.28PCh. 13 - An asymmetric slab waveguide is shown in Figure...Ch. 13 - A step index optical fiber is known to be single...Ch. 13 - Prob. 13.31PCh. 13 - Prob. 13.32P
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