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 8.43P
A particular broadside antenna array consists of ten
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Chapter 8 Solutions
Fundamentals of Electromagnetics with Engineering Applications
Ch. 8 - Prob. 8.1PCh. 8 - What is the pattern solid angle and the...Ch. 8 - Sketch an appropriate cross section of the...Ch. 8 - Prob. 8.5PCh. 8 - Prob. 8.6PCh. 8 - Prob. 8.7PCh. 8 - Prob. 8.8PCh. 8 - Prob. 8.9PCh. 8 - Prob. 8.10PCh. 8 - Prob. 8.11P
Ch. 8 - Prob. 8.12PCh. 8 - Suppose in the far field for an antenna at the...Ch. 8 - Prob. 8.14PCh. 8 - Prob. 8.15PCh. 8 - Prob. 8.16PCh. 8 - How long is a 1.5 -long dipole antenna at 1.0 GHz?...Ch. 8 - Prob. 8.18PCh. 8 - Prob. 8.19PCh. 8 - Prob. 8.20PCh. 8 - Prob. 8.21PCh. 8 - Prob. 8.22PCh. 8 - Prob. 8.23PCh. 8 - Prob. 8.24PCh. 8 - Prob. 8.25PCh. 8 - Prob. 8.27PCh. 8 - Prob. 8.28PCh. 8 - Prob. 8.29PCh. 8 - Prob. 8.30PCh. 8 - Prob. 8.31PCh. 8 - How long is a 0.75 monopole antenna at 1.0 GHz?...Ch. 8 - Prob. 8.33PCh. 8 - Prob. 8.34PCh. 8 - Prob. 8.35PCh. 8 - Prob. 8.36PCh. 8 - Prob. 8.37PCh. 8 - Prob. 8.38PCh. 8 - Two small loop antennas, each oriented in the xy...Ch. 8 - Prob. 8.40PCh. 8 - Prob. 8.41PCh. 8 - Prob. 8.42PCh. 8 - A particular broadside antenna array consists of...Ch. 8 - Prob. 8.44PCh. 8 - Prob. 8.45PCh. 8 - Prob. 8.46PCh. 8 - Prob. 8.47PCh. 8 - Prob. 8.48PCh. 8 - Design an open-ended shunt-stub matching network...Ch. 8 - Prob. 8.50PCh. 8 - Prob. 8.51PCh. 8 - Prob. 8.52PCh. 8 - Prob. 8.53PCh. 8 - Prob. 8.54PCh. 8 - Prob. 8.55P
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- A shirt vertical grounded antenna is designed to radiate at 10 MHz. What will be radiation resistance of the antenna is the effective height of the antenna is 60 m?arrow_forwardB. A 1.5m dipole transmitting antenna located with its center at the origin and radiates RF signal with frequency 0.1GHZ A second dipole receiving antena of length 0.75m is placcd in such a way that its axis is parallel with first one at distance 400m, the delivered power in the receiving antenna is -38, 92dB.What is the transmitting power in watts from transmitting antenna?arrow_forwardIf the diameter of a parabolic reflector antenna is 1.3 m, then what will be the half power beamwidth of the antenna? Assume the wavelength of radiation to be 0.2 m.arrow_forward
- A 100-turn loop antenna of radius 20 cm operating at 10 MHz in air is to give a 50 mV/m field strength at a distance 3 m from the loop. Determine (a) The current that must be fed to the antenna (b) The average power radiated by the antenna.arrow_forwardIf a half wave dipole antenna has a peak antenna current of 10 A, then estimate the power radiated by the antenna.arrow_forward23: (a) What does mean by directivity of antenna? Explain For an antenna, derive an expression for effective aperture in term of the gain. An FM broadcast radio station has an antenna with directivity of 2.5 dB and efficiency of 76%. The transmitted power is 100 kW. Calculate the effective isotropic radiated power. c) With aid of equations, explain how the motion of charges and curved or bent wire are the source of radiation in antenna theory.arrow_forward
- Q1) Very low signal strength in antenna. * Antenna patterns O Major lobes O Minor lobes O Nullarrow_forwardA 1-m long dipole antenna is driven by a 150 MHz source having a source resistance of 50 ohms and a voltage of 100 V. If the ohmic resistance of the antennas is given by RL = 0.625 ohms, find the:(a) Current going into the antenna (Iant)(b) Power dissipated by the antenna(c) Power radiated by the antenna(d) Radiation efficiency of the antennaarrow_forward01) Choose the best answer for five only of the following 1. The minimum value of the directivity of an antenna is.... a) Unity b) Zero c) Infinite 2. Very low signal strength in antenna. a) Minor lobes b) Null c) Antenna patterns d) Major lobes 3. the maximum directivity of an antenna that normalized far field pattern is given by? 0 < θ < π and 0 ≤φ <π/2,3π/2 < φ = 2π E(0,4) elsewhere = ((sin cos² p)¹/2 0 d) None is b) 7.7dB c) 8.7dB d) 9dB a) 7.07dB 4. the depth of penetration of 1 MHz wave in sea water which has conductivity = 4 mhos/meter and permeability approximately equal to that of free space is a) 25mm b) 25cm c)25m d) 25km 5. The free space media can be considered as ............... a) Lossy media b) lossless media c) good conductor 6. The input impedance is equal to the load impedance when a) l = 2 b)1 = 2/2 c) l = 2/4 d) a and c d) a and barrow_forward
- Calculate the First Null Beamwidth and the gain of a parabolic reflector antenna. The diameter of the reflector is 5m and the antenna is transmitting at 100 MHz.arrow_forward4. Patch antennas are the antennas of small size and are made of : a) Strip line b) Microstrip lines c) Coaxial cables d) Rectangular waveguide 5. of an antenna is a plot of the magnitude of the far field strength versus position around the antenna. a) Radiation pattern b) Directivity c) Beam width d) None of the mentionedarrow_forwardCalculate the beamwidth in degrees of a parabolic antenna with a diameter of 3 meters, an efficiency of 60% and operates at a frequency of 4GHzarrow_forward
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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