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Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question
a)
The electric field associated with an electromagnetic wave
propagating in free space and arriving at a receiving antenna
ve has a magnitude of 0.1 Vm-1 when it arrives at the receiving
280 antenna. The receiving antenna is at a distance of 25 km from
a ½ dipole transmitting antenna with directivity D=1.64. The
transmitting antenna has an efficiency of 95% and a radiation
resistance of 73 Q. The receiving antenna is in the plane of the
azimuth of the transmitting antenna.
(i) Calculate the average power density at the receiving
antenna.
(ii) Calculate the power radiated from the transmitting
antenna.
outl
(iii) Calculate the effective area, the gain and the loss
resistance of the transmitting antenna.
(iv) Calculate the power that must be delivered to the
transmitting antenna to achieve the observed power
density at the receiving antenna.
Transcribed Image Text:a) The electric field associated with an electromagnetic wave propagating in free space and arriving at a receiving antenna ve has a magnitude of 0.1 Vm-1 when it arrives at the receiving 280 antenna. The receiving antenna is at a distance of 25 km from a ½ dipole transmitting antenna with directivity D=1.64. The transmitting antenna has an efficiency of 95% and a radiation resistance of 73 Q. The receiving antenna is in the plane of the azimuth of the transmitting antenna. (i) Calculate the average power density at the receiving antenna. (ii) Calculate the power radiated from the transmitting antenna. outl (iii) Calculate the effective area, the gain and the loss resistance of the transmitting antenna. (iv) Calculate the power that must be delivered to the transmitting antenna to achieve the observed power density at the receiving antenna.
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