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 14.19P
To determine
The design of a two-element dipole array. Also, specify
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Chapter 14 Solutions
Engineering Electromagnetics
Ch. 14 - A short dipole-carrying current I0 cos t in the az...Ch. 14 - Prepare a curve, r vs. in polar coordinates,...Ch. 14 - Prob. 14.3PCh. 14 - Write the Hertzian dipole electric field whose...Ch. 14 - Prob. 14.5PCh. 14 - Prob. 14.6PCh. 14 - Prob. 14.7PCh. 14 - Prob. 14.8PCh. 14 - A dipole antenna in free space has a linear...Ch. 14 - Prob. 14.10P
Ch. 14 - A monopole antenna extends vertically over a...Ch. 14 - Find the zeros in for the E-plane pattern of a...Ch. 14 - Prob. 14.13PCh. 14 - For a dipole antenna of overall length 2l=,...Ch. 14 - Prob. 14.15PCh. 14 - Prob. 14.16PCh. 14 - Consider a lossless half-wave dipole in flee...Ch. 14 - Prob. 14.18PCh. 14 - Prob. 14.19PCh. 14 - A two-element dipole array is configured to...Ch. 14 - Prob. 14.21PCh. 14 - Prob. 14.22PCh. 14 - Prob. 14.23PCh. 14 - Prob. 14.24PCh. 14 - Prob. 14.25PCh. 14 - Prob. 14.26PCh. 14 - Consider an n-element broadside linear array....Ch. 14 - A large ground-based transmitter radiates 10 kW...Ch. 14 - Signals are transmitted at a 1-m carrier...Ch. 14 - Prob. 14.30P
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- A half-wave dipole, which has a total length of L = 2.00 cm. (i) Analyze the resonant frequency fr. (ii) Determine the new fr when the dipole length is 3L. (iii) Determine the radiation resistance of a quarter-wave monopole that has a total length of L.arrow_forwardA magnetic field strength of 5 µA/m is required at a point on θ = π/2, 2 km from an antenna in air. Neglecting ohmic loss, how much power must the antenna transmit if it is: (a) An infinitesimal dipole with length λ/50 (b) A dipole of l = 1.5λ (c) A half-wave dipole (d) A quarter-wave monopolearrow_forward6. A. A horizontal infinitesimal electric dipole of constant current lo is placed symmetrically about the origin and directed along the x-axis. Derive the far-zone fields radiated by the dipole. ÜNİVERSİTESİ ÜNİVERSİTESİ B. A horizontal infinitesimal electric dipole of constant current 3lo is placed symmetrically about the origin and directed along the y-axis. Derive the directivity of Bİ ÜNİVERSITESİ KATİP ÇELEBİ ÜNİVERSİTESİ the antenna. KATİP ÇELEBİ ÜNİVERSİTESİarrow_forward
- Explain why λ/2 dipole antenna gives optimum radiation pattern.. Provide your answer Handwritten with proper justification and drawingarrow_forwardExample: A 2/2 dipole radiates a time-averaged power of 600 W at a frequency of 300 MHz. A second 2/2 dipole is placed at a point P(r, 0, 0), where r = 200 m, 0 = 40, p=40°. It is oriented so that its axis is parallel to that of the transmitting antenna. What is the available power at the terminals of the second (receiving) dipole?arrow_forwardElectrical Engineering 1) A 90° degree corner reflector, in conjunction with a /2 dipole feed, is used in a radar tracking system. One of the requirements for such a system is that the antenna, in one of its modes of operation, has a null along the forward symmetry axis. To accomplish this, what should be the feed spacing from the vertex (in wavelengths)? Give all the possible values of the feed-to-vertex spacing.arrow_forward
- H.W A very short (1≤ 2/50) vertical electric dipole is mounted on a pole a height h above the ground perfectly conducting, and of infinite extent. The dipole is used as a transmitting antenna in a VHF (f = 50 MHz) ground-to-air communication system. In order for the communication system transmitting antenna signal not to interfere with a nearby radio station, it is necessary to place a null in the vertical dipole system pattern at an angle of 80° from the vertical. What should the shortest height (h) of the dipole be to achieve the desired specifications?arrow_forward3. Write down the total electric field E and magnetic field of a dipole antenna and prove that the near fields do not radiate P = -Re(ExH) = 0 Rarrow_forwardA half-wave dipole, which has a total length of L = 1.39 cm (i) Analyze the resonant frequency fr. (ii) Determine the new fr when the dipole length is 3L. (iii) Determine the radiation resistance of a quarter-wave monopole that hasa total length of L.arrow_forward
- 1. 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_forwardc) Write a relationship that relates the electric and magnetic fields in the far field region of an antenna. d) What is meant by the polarization of an antenna? e) What is the phase velocity of a coaxial cable that has a dielectric of & =10 separating the inner and out conductors.arrow_forwardQ] The E-field pattern of an antenna, varies as follows: E(0,0) = 10 cos? (0) sin(4) V/m for 0 <0arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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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