Fundamentals of Electromagnetics with Engineering Applications
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 8.34P
To determine

The amplitude of electric field and magnetic field for monopole antenna.

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The half wave dipole antenna height of transmitter is 175 m and antenna height of receiver is 18 m. The transmitted wave has field strength of 0.17 V/cm at frequency 560 MHz. Determine the field strength of tropospheric wave which is received at a distance of 69 km Answer Choices: a. 67.41 μV/m b. 67.83 μV/m C. 62.75 μV/m d. 62.41 μV/m
Two antennas located at points A and B are broadcasting radio waves of frequency 96.0 MHz, perfectly in phase with each other. The two antennas are separated by a distance d= 6.20 m. An observer, P, is located on the x axis, a distance x= 84.0 m from antenna A, so that APB forms a right triangle with PB as hypotenuse. What is the phase difference between the waves arriving at P from antennas A and B? A P X 4.594x10-¹ rad Computer's answer now shown above. You are correct. Previous Tries Your receipt no. is 158-6031 > Now observer P walks along the x axis toward antenna A. What is P's distance from A when he first observes fully destructive interference between the two waves? 1.152x10¹ m Computer's answer now shown above. Incorrect. Tries 1/6 Previous Tries If observer P continues walking until he reaches antenna A, at how many places along the x axis (including the place you found in the previous problem) will he detect minima in the radio signal, due to destructive interference? 2.000…
An antenna radiates in free space and 12 sin 0 -cos(27 × 10°t – Br)a, mA/m H Now answer the following question į. What is the frequency of the EM wave? What spectrum does it fall in? ii. What is the direction of propagation of the wave? iii. What is the polarization of the electric field/Magnetic field? iv. What is the phasor expression of this electric field/Magnetic field? v. Use Maxwell's equations determine the phasor expression of the magnetic field.H or Electric field, E [Consider there is no field component in the direction of propagation of the wave] vi. Now determine the instantaneous expression of magnetic field, H (t).. vii. What is the direction of propagation and polarization of the magnetic field/electric field? viii. Try to draw the propagation of this wave in a 3D system.
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How does an Antenna work? | ICT #4; Author: Lesics;https://www.youtube.com/watch?v=ZaXm6wau-jc;License: Standard Youtube License