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 8.32P
How long is a
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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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- 3) What are the applications of log-periodic dipole antenna?arrow_forward1.) If the far field distance of a pyramidal horn antenna at 200 MHz is 3.5 m, what is the width of the antenna, in meters? 2. The near-earth range equation is used by the cell phone industry to determine the maximum range between a cell phone and a repeater. Determine the change in maximum range if the repeater antenna height is increased by a factor of two. step by step and clear thanks.arrow_forwardb) Fill in blanks with a suitable answer 1. The bandwidth of an antenna can be broader by increased the... 2. Radiation pattem is . . dime nsional quantity 3. One steradian is equal to . . square degrees 4. The minimum value of the directivity of an antenna is. . 5. The radiation resistance of short dipole is given by... 6. Gain is equal to directivity in case of ... 7. Radiation resistance of antenna is.. .arrow_forward
- Question 3 (a) A television receiver's folded dipole antenna has an impedance of 600 0. If a RG-6 coaxial (75 0) coaxial cable is used, calculate the ratio required to match the cable and the antenna. (b) Figure Q3. (b) shows a beam antenna consisting of a dipole, a reflector, and a director. Design the beam antenna given that it is cut for a frequency of 200 MHz and assuming a velocity coefficient of 0.85. The length of the reflector is 5% more than the length of the dipole and the length of the director is 5% less than the length of the dipole. 0.15 Figure Q3(b)arrow_forwardWhat will be the value of the radiation resistance of a monopole antenna of length equal to quarter of wavelength. It is to be noted that the monopole antenna is excited by linear current distribution.arrow_forwardConsider a 90° corner reflector antenna with a half-wave dipole as the driving element and an element to corner spacing of lambda/2. Calculate the directivity:arrow_forward
- For 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_forwardSince b=2a=1 cm in a hollow rectangular waveguide, the operating frequency of the waveguide must be ........ GHz<f<......GHz for only the dominant mode to propagate?arrow_forward92. The physical length and impedance of a dipole antenna element is a function of frequency. At resonance, what would be the value of the impedance at the ends of its element? A. Immeasurable C. Low B. High D. Undeterminedarrow_forward
- QA3 Dish antennas are a common type of antenna at high frequencies. (a) Explain the design and operation of dish antennas with the use of equations and diagrams. Discuss different types of dish antennas and identify the main advantages and disadvantages of each type. Identify the main trade-offs between different types of dish antennas and suggest ways to improve efficiency. (b) With the aid of diagrams, explain the following three types of radiation patterns and give examples of where each type is used: (i) (ii) (i) Isotropic Omnidirectional Directionalarrow_forwardA 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_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_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