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 8.40P
(a)
To determine
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(b)
To determine
The values of
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A halfwave dipole with a total conductor length of 1 m is used as a transmit antenna to radiate electromagnetic energy. At a distance of 500 m from this antenna in the direction of maximum radiation, what is the free space path loss (dB)? Consider the end effect of the dipole.
For a dipole antenna, the radiation resistance is given as 523 ohms. What will be the effective length of the dipole? Express with respect to the wavelength.
For a monopole antenna with linearclinear distribution, if the effective length of the monopole is equal to half of wavelength, then estimate the radiation resistance of the monopole.
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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- What will be the radiation resistance of a half wave dipole antenna which is transmitting at a frequency of 10 GHz?arrow_forwardHow the radiation resistance of a dipole antenna varies with its effective length? Find out the radiation resistance of a dipole antenna which is operating at 300 MHz.arrow_forwardA parabolic antenna system is having a dish diameter of 10 m and the feed is connected at 10 GHz. What will be the value of the gain of the antenna?arrow_forward
- Q. Calculate the radiation resistance of a short dipole (with a triangular current distribution) of length 0.3 m operating at 100 MHz. If the total resistance of the antenna is 2.2 Ω, calculate the maximum effective area and the radiation efficiency of the dipole. Calculate the open circuit voltage induced at the terminals of the dipole if it is oriented along the z - direction and the incident electric field at the dipole is Ei = (ax 4 + ay 3 + az 5) V/m.arrow_forwardFor the given quarter wave dipole antenna, if the radiation resistance is 50 ohms and the loss resistance is 20 ohm, then estimate the radiation efficiency.arrow_forwardWhat will be first null beam width of a paraboloidal reflector antenna operating at a frequency of 4 GHz and having a diameter of 20 m?arrow_forward
- If a parabolic antenna is equipped with a 10 m diameter dish, then what will be the first null beamwidth of the antenna is the wavelength of radiation is 0.005 m?arrow_forwardSketch the radiation pattern of an isotopic antenna.arrow_forwardFor a dipole antenna, the radiation resistance is 49.35 ohms. Express the effective length of the dipole antenna in terms of wavelength.arrow_forward
- A thin dipole antenna is having an effective length of one fiftinth of its wavelength. What will be the radiation resistance of the thin dipole?arrow_forwardLength of a thin dipole antenna is 1/10th of its wavelength. Find the value of the radiation resistance of the dipole antenna.arrow_forwardWhat will be the free space path loss if the distance between the two isotropic antenna is 2.5 km and the radiating frequency is 32.85 MHz? Show detailed calculation please.arrow_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