EBK FUNDAMENTALS OF APPLIED ELECTROMAGN
7th Edition
ISBN: 8220100663659
Author: ULABY
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 9, Problem 26P
Consider the communication system shown in Fig. P9.26, with all components properly matched. If Pt = 10 W and f = 6 GHz:
- (a) What is the power density at the receiving antenna (assuming proper alignment of antennas)?
- (b) What is the received power?
- (c) If Tsys = 1,000 K and the receiver bandwidth is 20 MHz, what is the signal-to-noise ratio in decibels?
Figure P9.26 Communication system of Problem 9.26.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
4. short answers
a. What is the effective antenna area of an antenna at 2500 MHz, if the gain is 13 dBi.
b. For a WCDMA handset with 7 dB noise figure and 5 MHz effective noise bandwidth, calculate the noise floor in dBm.
c. An NBA basketball player is close to 2 meters tall, and an “Umpa-Lumpa” from the movie “Willie Wonka” is 0.5 meters tall. Assuming 2-ray propagation model, what is the ratio of the signal strength received by the two people?
d. Consider a 12-km microwave link with 15 meter towers at both ends, calculate the minimum frequency in GHz, such the first Fresnel zone does not intersect the ground? Assume that the ground is flat between the towers.
Explain through equations what happen if there is a phase error θc between the transmitted QPSK signal and local (replica) carrier signals in coherent QPSKdemodulator. Then what happen if θc=90o
Calculating the sample power and fressnel zone radius at 50 Ohm receiver antenna impedance at 5km, when the transmitter power is 5W and the communication frequency is 868MHZ and the transmitter antenna gain is 1 and the receiver antenna gain is 2? Calculating the electric field strength on the receiver side and the rms value of the voltage coming to the receiver input?
Chapter 9 Solutions
EBK FUNDAMENTALS OF APPLIED ELECTROMAGN
Ch. 9.1 - What does it mean to say that most antennas are...Ch. 9.1 - What is the radiated wave like in the far-field...Ch. 9.1 - In a Hertzian dipole, what is the underlying...Ch. 9.1 - Outline the basic steps used to relate the current...Ch. 9.1 - A 1 m long dipole is excited by a 5 MHz current...Ch. 9.2 - Prob. 5CQCh. 9.2 - What is the magnitude of the directivity of an...Ch. 9.2 - An antenna has a conical radiation pattern with a...Ch. 9.2 - Prob. 3ECh. 9.3 - What is the physical length of a half-wave dipole...
Ch. 9.3 - How does the radiation pattern of a half-wave...Ch. 9.3 - How does the radiation efficiency of a...Ch. 9.3 - Prob. 4ECh. 9.3 - Prob. 5ECh. 9.5 - Prob. 6ECh. 9.5 - At 100 MHz, the pattern solid angle of an antenna...Ch. 9.6 - If the operating frequency of the communication...Ch. 9.6 - Prob. 9ECh. 9.6 - Prob. 10ECh. 9.8 - Verify that Eq. (9.86) is a solution of Eq. (9.85)...Ch. 9.8 - Prob. 12ECh. 9.8 - What condition must be satisfied in order to use...Ch. 9.8 - Derive an expression for the array factor of a...Ch. 9.8 - Prob. 15ECh. 9.11 - Prob. 11CQCh. 9.11 - Prob. 12CQCh. 9.11 - Prob. 13CQCh. 9.11 - Prob. 14CQCh. 9.11 - Prob. 15CQCh. 9 - A center-fed Hertzian dipole is excited by a...Ch. 9 - A 50 cm long center-fed dipole directed along the...Ch. 9 - Prob. 3PCh. 9 - Determine the following: (a) The direction of...Ch. 9 - Repeat Problem 9.4 for an antenna with...Ch. 9 - A 2 m long center-fed dipole antenna operates in...Ch. 9 - Repeat Problem 9.6 for a 20 cm long antenna...Ch. 9 - Prob. 9PCh. 9 - An antenna with a radiation efficiency of 90% has...Ch. 9 - Prob. 11PCh. 9 - The normalized radiation intensity of a certain...Ch. 9 - Repeat Problem 9.6 for a 1 m long half-wave dipole...Ch. 9 - Prob. 14PCh. 9 - A 50 cm long dipole is excited by a sinusoidally...Ch. 9 - Prob. 16PCh. 9 - For a dipole antenna of length l = 3/2, (a)...Ch. 9 - Prob. 18PCh. 9 - Prob. 19PCh. 9 - Prob. 20PCh. 9 - A car antenna is a vertical monopole over a...Ch. 9 - Determine the effective area of a half-wave dipole...Ch. 9 - A 3 GHz line-of-sight microwave communication link...Ch. 9 - A half-wave dipole TV broadcast antenna transmits...Ch. 9 - A 150 MHz communication link consists of two...Ch. 9 - Consider the communication system shown in Fig....Ch. 9 - The configuration shown in Fig. P9.27 depicts two...Ch. 9 - Prob. 28PCh. 9 - The configuration shown in Fig. P9.29 depicts a...Ch. 9 - Prob. 30PCh. 9 - Prob. 31PCh. 9 - A uniformly illuminated rectangular aperture...Ch. 9 - An antenna with a circular aperture has a circular...Ch. 9 - Prob. 34PCh. 9 - Prob. 35PCh. 9 - Prob. 36PCh. 9 - Prob. 37PCh. 9 - Prob. 38PCh. 9 - Prob. 39PCh. 9 - Prob. 40PCh. 9 - Find and plot the normalized array factor and...Ch. 9 - Prob. 44PCh. 9 - A three-element linear array of isotropic sources...Ch. 9 - An eight-element linear array with /2 spacing is...Ch. 9 - A linear array arranged along the z axis consists...
Knowledge Booster
Learn more about
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
- The carrier signal of amplitude 10V is frequency modulated (K=2kHz/V) by a signal with frequency spectrum shown: a. Determine the approximate bandwidth of the FM signal (Bessel approximation).b. Determine the approximate bandwidth of the FM signal (Carson approximation).c. The power dissipated by the FM signal in a 75-ohm antenna.Answers a) 24 kHzb) 16 kHzc) 0.667 Warrow_forwardA mobile phone antenna with a gain of 2 dB transmits a 0.5 W signal to a base station with an antenna gain of 8 dB. Assume the minimum sensitivity of the receiving antenna to be Pr = -110 dBm. If the operating frequency is 700 MHz, what is the maximum allowed distance between the base station and the mobile phone?.arrow_forwardThe radio path (f = 900 MHz) between a mobile phone and the base station has a loss of 30 dB in addition to the free space loss. The base station measures the level of the signal transmitted by the phone, and it sends the phone a command to set the transmit power to a level, which gives a received power level of-90 dBm. The antenna gain of the phone is 2 dB and the receive gain of the base station antenna is 7 dB. The distance between the phone and the base station is 500 m. What will be the transmit power level of the phone?arrow_forward
- Communication systemarrow_forward4- An 80 MHz carrier is -1 frequency modulated by a sinusoidal signal of 1V amplitude and the frequency sensitivity is 100 Hz/. Find the approximate bandwidth of the FM waveform if the modulating signal has a frequency of 10 .kHz.arrow_forwardConsider a receiving antenna with a ground value of 20 dB and an equivalent noise temperature of 12dBK, the G/T factor will be: Select one: A. The value is 32dB/K b. The value is 8dB/K c. None of the results is correct d The value is -8db/Karrow_forward
- Q1/ A receiver has a noise power bandwidth of 12 kHz. A resistor which matches with the receiver input impedance is connected a cross the antenna terminals. What is the noise power contributed by this resistor in the receiver bandwidth? Assume temperature to be 30°C. Ans. 5.01768 x 10-17 Warrow_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_forwarda.What is the attenuation of 350 ft of RG-11 U coaxial cable at 100 MHz?b. A transmitter has an output power of 3 W that is fed to an antenna through an RG58A/U cable 20 ft long. How much power reaches the antenna?c. Two engineers have a disagreement over the selection of transmission line for connections within a 100m Data Centre on a project that is at risk for cost overrun. The first engineer is arguing in favor of using multi-mode fibre while the second engineer would like to use single mode fibre. You are the project engineer. Decide which of the two transmission lines to use and justify your answer.d. For typical silica optical fibres with ncore = 1.45 and Δ = 5 x 10-3, calculate nclad and NAe. For a typical silica fibre with D (@ λ = 1.3μm) = 2.5 nm ps/km and a semiconductor laser source centred on λ = 1.3μm with Δλ = 4nm: the bandwidth length BL ≈ 100 Gbps km (singlemode, step-index). What transmission speed is possible at a distance of 5km?f. A link from point a to point b is…arrow_forward
- A broadcast transmitter produces about 2.8 KW in the sidebands when modulated at a level of 75%.a.) how much carrier power does the transmitter have under those conditions?b. how much increase in antenna current would result by the 75% modulation if the antenna resistance is 50 ohms?arrow_forwardb. An antenna having an effective temperature 15K is fed into a microwave amplifier that has an effective noise temperature 20K. Calculate the available noise power pet unit bandwidth, at the input for this particular antenna temperature Noise bandwidth is 4MHz..arrow_forward1) A 10-Vrms carrier signal with a frequency of 91.1 MHz is FM modulated by a 15 pts 8-Vrms, 4-KHz information signal that resulted to a deviation of 12 kHz. A) Determine the bandwidth using Carson's rule B) determine the bandwidth using Bessel Function C) determine the total power of the modulated wavearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSON
Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
Programmable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill Education
Electric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSON
Engineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:9780078028229
Author:Charles K Alexander, Matthew Sadiku
Publisher:McGraw-Hill Education
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:9780134746968
Author:James W. Nilsson, Susan Riedel
Publisher:PEARSON
Engineering Electromagnetics
Electrical Engineering
ISBN:9780078028151
Author:Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:Mcgraw-hill Education,
How does an Antenna work? | ICT #4; Author: Lesics;https://www.youtube.com/watch?v=ZaXm6wau-jc;License: Standard Youtube License