Engineering Electromagnetics
Engineering Electromagnetics
9th Edition
ISBN: 9781260029963
Author: Hayt
Publisher: MCG
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Chapter 12, Problem 12.30P
To determine

The description of pulse at the output of the second medium and its physical explanation.

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A screen, having a Screening Effectiveness (S) of 31.62 at 100 MHz, is located 5 m from a 2 cm radius conductor loop that carries a signal current of 7.5 mA at a frequency of 100 MHz. Determine the maximum electric field strength transmittedthrough the screen (Et, µVm-1) resulting from radiated emissions emanating from the conductor loop.
A plane wave of which the electric field vector, E0=10V/m, f=5GHz, is parallel to x-z plane, arrives  on a dielectric medium of permittivity εr,=4 with an incident angle of 45∞. Find the reflection coefficient, Γ, transmission coefficients, T, and reflection, transmission angles.  Calculate the incident angles for zero reflection and full reflection. Calculate the phase velocity and wavelenght in both media.
a) Compare E and H in dielectric and well-conducting medium with E and H in empty space.b) How can you absorb electromagnetic waves in the microwave region? Please explain.c) A spacecraft returning to Earth has 1015 m-3 ionized atoms around it and creates a density. Find the plasma frequency accordingly. Determine the cutoff wavelength taking into account communication with the ground station.
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