Engineering Electromagnetics
9th Edition
ISBN: 9781260029963
Author: Hayt
Publisher: MCG
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Chapter 14, Problem 14.22P
To determine
(a)
The front to back ratio for
To determine
(b)
The front to back ratio for
To determine
(c)
The front to back ratio for
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A 0.48520λ0 dipole antenna is made to work at 4 GHz. The antenna is then connected to a 12 V voltage source which has an internal resistance of 25 Ω)
a) Make a diagram of the above system,
b) Is an impedance matching circuit needed? If yes, where should the impedance circuit be inserted and make a diagram of the system with the adjusting circuit,
c) How many cm is the length of the dipole antenna above,
Solve Subparts A,B,C in 25 minutes ASAP
An antenna radiates a total power of 100W in the direction of maximum radiation,
the field strength at a distance of 10Km was found to be 12mV/m. What is the
gain of the antenna? Assume free space propagation. If η=90% find directivity.
An electric dipole p=6ax-3ay+2ax nC-m is located at (-1,2,-3). Find the potential at point (3,-9,4).
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- A slab of dielectric material has a relative dielectric constant of 3.8 and contains a uniform electric flux density of 8nC/m^2. If the material is lossless; find: (a)E; (b)P; (c)The average number of dipoles per cubic meter (n) if the average dipole moment is p=10^-29Cmarrow_forwardA slab of dielectric material has a relative dielectric constant of 3.8 and contains a uniform electric flux density of 8nC/m^2. If the material is lossless; find: The average number of dipoles per cubic meter (n) if the average dipole moment is p=10^-29Cmarrow_forwardA dipole having a moment p = 3ax − 5ay + 10az nC · m is located atQ(1, 1,−4) in free space. Find V at P(6, 3, 4).arrow_forward
- An isotropic antenna is radiating evenly in the r direction in free space. The total electric field is 20 a V m-1at 1 m distance. Determine the radiated power density and radiated power at a distance of ABC m from the antenna, where A is 1 while BC are the 09of your student identification number.(ii) Explain, with the aid of diagrams, the field patterns of a half-wave dipole antenna and quarter-wave monopole antenna. You should include twodimensional and three-dimensional plots.first digit: 1final two digits: 09arrow_forwardAn antenna with power P= 2.2 x 10^3 W is radiating spherical electromagnetic waves. Consider a place which is d = 820 m away from the antenna. - Express I in terms of the electric magnitude Emax, the speed of light c, and the permeability of free space U0. AND - Solve for the numerical value of Emax in volts per meter.arrow_forwardA dipole of moment p=-4ax+5ay+3az nCm is located at D(1,2,-1) in free space. Find V at (1,2,0)arrow_forward
- Design a 5-ELEMENT YAGI-UDA antenna for a 545 GHz frequency, with the following contents:a. Operation and its applicationb. Sketch of the actual antenna with its dimensions completelyc. Its computationarrow_forwardA 0.48520λ0 dipole antenna is made to work at 4 GHz. The antenna is then connected to a 12 V voltage source which has an internal resistance of 25 Ω) a) Make a diagram of the above system, b) Is an impedance matching circuit needed? If yes, where should the impedance circuit be inserted and make a diagram of the system with the adjusting circuit, c) How many cm is the length of the dipole antenna above, d) How much power is emitted when not using the adjusting circuit and e) How much power is emitted when using the adjusting circuit. Solve subparts D,E max 20 minutes ASAParrow_forwardAn electric dipole located at the origin in free space has a moment p = 3ax - 2ay+az nC · m. Find V at P(2, 3, 4)arrow_forward
- An isotropic antenna is radiating evenly in the r–direction in free space. The totalelectric field (E0) is 20 V/m at 1-m distance. Determine the following parameters at adistance of 139 m from the antenna, (ii) The radiation power density.arrow_forwardAn electric field strength of 10 µV/m is to be measured at an observation point θ = π/2, 500 km from a half-wave dipole antenna operating in air at 50 MHz. (a) What is the length of the dipole (b) Calculate the current that must be fed to the antenna (c) Find the average power radiated by the antenna (d) If a transmission line with Z0 = 75 ohm is connected to the antenna, determine the Γ and SWR.arrow_forwardA dipole with charges of ±q, where q = 3.9e-05, and a separation d = 0.0001 has what magnitude field strength along the z (dipole) axis at a distance 1 away?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