Engineering Electromagnetics
9th Edition
ISBN: 9781260029963
Author: Hayt
Publisher: MCG
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Question
Chapter 13, Problem 13.23P
To determine
(a)
To prove:
The average power density in the
To determine
(b)
The integrated value of the result obtained in part (a) and prove that the average powers in watts
transmitted down the guide is given as:
Where
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1.) A communication system is defined below:Transmitter Power: = 45 dBm; Frequency = 1 GHzTransmit Antenna: Gain = 12 dB, height above ground = 50 meters;Receive Antenna: Gain = 6 dB, height above ground= 2.5 metersFind the received power (in dBm) at a range of 4 kilometers:a. using the free-space range equation
b. using the near-earth range equation
Using the results of the calculations in a & b above:
c. determine the best prediction of the received power (in dBm) at the 4 kilometer range.
answer should be
a) -41.15
b) -39.1
c.) near FS
The transmit power is 20 dB, the transmit antenna gain is 2 (in linear scale), the receiveantenna gain is 3 (in linear scale), the carrier frequency is 300 kHz, the transmit antenna heightis 10 meters, the receive antenna height is 1 meter, the distance between the transmitter andreceiver is 1 km, L = 1. The transmission environment is air (the path loss exponent is 2). Usethe free space propagation model.a. Calculate the receive power in dBm.b. Calculate the path loss in dB.
2.) The power density is 4 mW/m² at some distance R from an isotropic antenna. The isotropic antenna is replaced with a different antenna and the power density measured is now 60 mW/m² at the same distance R. What is the gain (in dB) of the second antenna?
3.) The received power at an airplane is calculated as Pr=-43 dBm at a range of 13 miles using free-space propagation. Determine the received power (in dBm) at a range of 52 miles.
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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