Engineering Electromagnetics
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 14, Problem 14.28P

A large ground-based transmitter radiates 10 kW and communicates with a mobile receiving station that dissipates 1 mW on the matched load of its antenna. The receiver (not having moved) now transmits back to the ground station. If the mobile unit radiates 100 W, what power is received (at a matched load) by the ground station?

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A transmitter has an output power of 50 W. It is connected to its antenna by a feed line that is 25 m long and properly matched. The loss in the feedline is 5 dB/100m. The antenna has a gain of 8.5 dBi. a) How much power reaches the antenna? b) What is the EIRP in the direction of maximum antenna gain? c) What is the power density 1 km from the antenna, in the direction of maximum gain, assuming free-space propagation?
What is the ERP if the output of transmitter is 50 kW, the coax line loss is 300 W, and the antenna power gain is 3dB?
When the transmitter power is 5W and the communication frequency is 868MHZ, when the transmitter antenna gain is 1 and the receiver antenna gain is 2, calculate the received power and fressnel zone radius at the end of 5km at 50 Ohm receiver antenna impedance? Calculate the electric field strength on the receiver side and the rms value of the voltage coming to the receiver input.
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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