Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
< 8:31 Antennas Past papers Sessional-II.pdf Quaid-i-Azam University Sessional-II, Spring 2021 (Antennas (EL-724) 50% Date: 17-06-2021 NOTE: Due date for submission of Sessional-II is 17-06-2021 at 4:30 pm. Question 1 Consider a linear wire antenna of finite length and radius a. The radius a of the antenna is taken to be very small as compared to an operating wavelength A, i.e., a << A. The electric current density vector J(r) of the antenna is given by, J(r) =ė, 16()()() f(h's) = sink(1/2 h)] sin kl/2] - where h, and hy are dummy coordinates which form a three perpendicular coordinate system and 5(-) is a Dirac delta function. The geometry of the problem is given in Fig. 1. It should be noted that here axial unit vector è, in spherical coordinates are given below, =è, sine, coso, +ê, sin 0, sino, + è, cose, Find the electric and magnetic fields in the near and far zone. Also find the maximum directivity D- ← а

< 8:31 Antennas Past papers Sessional-II.pdf Quaid-i-Azam University Sessional-II, Spring 2021 (Antennas (EL-724) 50% Date: 17-06-2021 NOTE: Due date for submission of Sessional-II is 17-06-2021 at 4:30 pm. Question 1 Consider a linear wire antenna of finite length and radius a. The radius a of the antenna is taken to be very small as compared to an operating wavelength A, i.e., a << A. The electric current density vector J(r) of the antenna is given by, J(r) =ė, 16()()() f(h's) = sink(1/2 h)] sin kl/2] - where h, and hy are dummy coordinates which form a three perpendicular coordinate system and 5(-) is a Dirac delta function. The geometry of the problem is given in Fig. 1. It should be noted that here axial unit vector è, in spherical coordinates are given below, =è, sine, coso, +ê, sin 0, sino, + è, cose, Find the electric and magnetic fields in the near and far zone. Also find the maximum directivity D- ← а

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
See similar textbooks
icon
Related questions
Question
< 8:31 Antennas Past papers Sessional-II.pdf Quaid-i-Azam University Sessional-II, Spring 2021 (Antennas (EL-724) 50% Date: 17-06-2021 NOTE: Due date for submission of Sessional-II is 17-06-2021 at 4:30 pm. Question 1 Consider a linear wire antenna of finite length and radius a. The radius a of the antenna is taken to be very small as compared to an operating wavelength A, i.e., a << A. The electric current density vector J(r) of the antenna is given by, J(r) =ė, 16()()() f(h's) = sink(1/2 h)] sin kl/2] - where h, and hy are dummy coordinates which form a three perpendicular coordinate system and 5(-) is a Dirac delta function. The geometry of the problem is given in Fig. 1. It should be noted that here axial unit vector è, in spherical coordinates are given below, =è, sine, coso, +ê, sin 0, sino, + è, cose, Find the electric and magnetic fields in the near and far zone. Also find the maximum directivity D- ← а
Transcribed Image Text:< 8:31 Antennas Past papers Sessional-II.pdf Quaid-i-Azam University Sessional-II, Spring 2021 (Antennas (EL-724) 50% Date: 17-06-2021 NOTE: Due date for submission of Sessional-II is 17-06-2021 at 4:30 pm. Question 1 Consider a linear wire antenna of finite length and radius a. The radius a of the antenna is taken to be very small as compared to an operating wavelength A, i.e., a << A. The electric current density vector J(r) of the antenna is given by, J(r) =ė, 16()()() f(h's) = sink(1/2 h)] sin kl/2] - where h, and hy are dummy coordinates which form a three perpendicular coordinate system and 5(-) is a Dirac delta function. The geometry of the problem is given in Fig. 1. It should be noted that here axial unit vector è, in spherical coordinates are given below, =è, sine, coso, +ê, sin 0, sino, + è, cose, Find the electric and magnetic fields in the near and far zone. Also find the maximum directivity D- ← а
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS