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 8.45P
To determine
The power required to drive the transmitted antenna.
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A parabolic dish antenna has a diameter of 5 meter, operating at 30 GHz frequency.a) What is the effective area Ae of the antenna?
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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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- b) 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_forwardFrom an operational point of view, what are the major differences between the Yagi-Uda and the log-periodic antennas? Explain, with the aid of diagrams.arrow_forwardQ2 A parabolic dish antenna has a diameter of 5 meter, operating at 30 GHz frequency. a) What is the effective area A, of the antenna? b) What is the antenna power gain in ratio and in dBi?arrow_forward
- What will be the power gain of a parabolic antenna with 10 m diameter dish and a feed of 10 GHz?arrow_forwardA dipole antenna has a radiation resistance of 56 W and a loss resistance of 5 W, measured at the feedpoint. Calculate the efficiency. 91.8 %89.0 %93.0 %88.3 %arrow_forwardFind the far field distance for an antenna with maximum dimension of 2 m and operating frequency of 800 MHz.arrow_forward
- The maximum radar cross section for a resonant half-wave length dipole is 0.8512. the frequency is 10 GHz, the range is 1000 m, the gain of the transmit and receive antennas is 20 dB, and the transmit power is 1000 Watts. Compute the received power if the receiver in the same location as the transmitterarrow_forwardAn antenna used for transmitting has a power gain of 20, directive gain of 22, and an input power of 200 W. Determine: 1.EIRP in W, dBm and dBW. 2.Power density at a distance of 5 km from the antenna along the direction of maximum radiation. 3.Antenna efficiency 4. Radiated power from an antenna 5.Radiation resistance and antenna effective resistance if current at feedpoint is 2 A.arrow_forwardb) A particular antenna has a VSWR of 2.4. Determine the following and, in each case, show full working: i) Reflection coefficient. Please transpose the equation for VSWR and show your working. ii) Calculate the mismatch efficiency of the antenna. Show your working.arrow_forward
- 1- The HPBW of 22 antenna equal to......... 2- The side lobes appear in a loop antenna when 3- The conditions of the end-fire array antennas are and 4- The PLF-0.5. in the angle between the transmitted and received signal is 5- When no reflection from the antenna, the Return Loss (RL) equal to 6- In order to increase the radiation resistance of the loop antenna WWE is required.arrow_forwardFind the maximum power gain for Hertzian dipole antenna with 0.2 m length at frequency of 2.4 GHz. The antenna must have 15 mW/m radiation intensity at elevation angle of 70°.arrow_forwardA vertically earthed antenna of length half wave length is transmitting a video signal. What will be the radiation resistance 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