Fundamentals of Electromagnetics with Engineering Applications
1st Edition
ISBN: 9780470105757
Author: Stuart M. Wentworth
Publisher: Wiley, John & Sons, Incorporated
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Textbook Question
Chapter 8, Problem 8.2P
What is the pattern solid angle and the directivity for (a) an isotropic antenna and for (b) a semiisotropic antenna, which radiates equally in all directions above
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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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- The gain of a paraboloid reflector antenna with circular aperture mouth is 1000 when the frequency is 300 MHz. What will be the diameter of the circuler reflector mouth?arrow_forward1. In an isotropic source, the directivity is unity because No one of them Uo, U and Umax are equal to each other Uo, U and Umax are different from each other 2. If the radiation lobe in a direction different form the intended lobe. the lobe called back lobe Major lobe side lobe 3. If the radiating property of an antenna is best in some directions than in others, this called Omnidirectional Radiator Directional Radiator Isotropic Radiator.arrow_forwardAn antenna has Umax = 12 W/sr and U, = 9 W/sr and a radiation efficiency of 90%. The gain of the antenna is: O A. 0.75 O B. 0.675 O C. 1.2 O D. 1.33arrow_forward
- A parabolic antenna having a circular aperture mouth has a power gain of 1000 for wavelength of 10 cm. What will be the diameter of the aperture?arrow_forwardThe most efficient length for a linear antenna is λ/2. Why?arrow_forwardFor a helical antenna, the radiation resistance is 250 ohms and the loss resistance is 50 ohms. Estimate the radiation efficiency of the antenna?arrow_forward
- The directivity of an antenna is 12 dB. What will be the beam solid angle of the antenna? Express the answer in steradian.arrow_forwardIf the electric field intensity of an isotropic antenna as down formula, what is the overall radiation power? =- e-jßr e V/marrow_forwarda non-directional pattern in a given plane, and a directional pattern in any .. orthogonal plane is ....... Directional antenna O omnidirectional antenna O isotropic antenna Oarrow_forward
- Question A half-wave dipole antenna has Rioss = 1Q. What is the antenna gain? O 1.48 O 4.18 dB 1.62 O Not enough information to answerarrow_forwarduestion 5 Magnitude of dipole moment is given by q/d None d/q save this response.arrow_forwardAn antenna has a directive gain of 25 dB. If the antenna is transmitting at a frequency of 10 GHz, then what will be the effective aperture of the antenna?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