I need an expert mathematical solution.The E-field pattern of an antenna. independent of , varies as follows:0° ≤ 0≤ 45°E = 045°{190°90° < 0 ≤ 180°(a) What is the directivity of this antenna?(b) What is the radiation resistance of the antenna at 200 m from it if the field is equalto 10 V/m (rms) for Ø=0° at that distance and the terminal current is 5 A (rms)?

Answered: Image /qna-images/answer/ace92d5c-86db-4d51-8830-2b3bc766e946.jpg

Answered: I need an expert mathematical solution.…

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...

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Q1) Very low signal strength in antenna. * Antenna patterns O Major lobes O Minor lobes O Null
Two antennas located at points A and B are broadcasting radio waves of frequency 96 MHz. The signals start in phase with each other. The two antennas are separated by a distance d=11.2 m. An observer is located at point P on the x axis, a distance x=97 m from antenna A. The points A, P and B form a right triangle. A) What is the phase difference between the waves arriving at P from antennas A and B? Enter your answer in radians (rad). 1.2957 rad (correct) B) Now observer P walks along the x axis toward antenna A. What is P's distance from A when they first observe fully constructive interference between the two waves? 20.0704 m (incorrect) C) If observer P continues walking until they reach antenna A, at how many places along the x axis (including the place you found in the previous problem) will they find maxima in the radio signal due to constructive interference? 4 (incorrect) Can you please help with parts B and C.
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2. For a slab dielectric waveguide with n₁, n₂ for the refractive indices of the core and classing, respectively, what is the minimum slab thickness to accommodate two TE modes propagating in it? The mode's vacuum wavelength is 2o.
I need a full and clear expert solution for handwriting.
This is a practice problem from the Engineering Electromagnetics course in my Electrical Engineering program. Could you please walk me through the steps of solving it so that I can solve more complicated ones in the future? Thank you for your assistance.
Multiple Choice Questions (MCQ): (15 M 1. For a horn antenna, in which flaring is done only in one direction is a) Conical antenna b) Sectoral antenna c) Pyramidal horn antenna d) Exponential horn antenna 2. Wave unaffected by night or day is a) Ground wave b) Skywave c) Space wave d) Tropospheric wave 3. When a wave is incident normally then the acceptable highest frequency at which signal can be returned is the a) critical frequency b) LUF c) optimum frequency d) dominating frequency 4. High frequency range is from? a. 0.3 to 3 MHz b. 3 to 30 MHz c. 30 to 300 MHz d. 3to 30 MHz 5. The actual permittivity of a medium whose relative permittivity is 5. a) 4.43*10-¹1F/m b) 4.43*10-¹2F/m c) 4.43*10¹¹F/m d) 4.43* 10¹2F/m
Q1. Choose the correct answer to the following questions: A-Which of the following type of antenna has a directivity of 0 dB? a) Horn antenna b) General antenna c) Patch antenna d) Isotropic antenna B-Amongst which of the following shows the relation between half power beam width and the directivity of an antenna? a) A larger HPBW equates to more directivity HPBW equates to less directivity A smaller HPBW equates to more directivity d) None of the above c) A smaller C-The region of 0.25 m from D=1.5m antenna at 300 MHz is. a) Far field b) near field c) Fresnel field d) none D- Which of the following lobes of an antenna radiation pattern is contained the most power? a Major lobe b) Minor lobe c) Side lobe d) Back lobe E- Suppose we have a copper conductor with a frequency of 60 Hz. We need to find the skin depth of the electromagnetic wave in this conductor. Conductivity of copper (a): 5.8 x 107 S/m. the skin depth is a) 9.5 mm b) 20 mm c) 10 cm d) none
This question was asked specifically for the electromagnetic waves course.
2.9. You are an antenna engineer and you are asked to design a high directivity/gain antenna for a space-borne communication system operating at 10 GHz. The specifications of the antenna are such that its pattern consists basically of one major lobe and, for simplicity, no minor lobes (if there are any minor lobes they are of such very low intensity and you can assume they are negligible/zero). Also it is desired that the pattern is symmetrical in the azimuthal plane. In order to meet the desired objectives, the main lobe of the pattern should have a half-power beamwidth of 10 degrees. In order to expedite the design, it is assumed that the major lobe of the normalized radiation intensity of the antenna is approximated by U(0, 4) = cos"(0) and it exists only in the upper hemisphere (0 <0 < x/2,0 <¢ < 2n). Determine the: (a) Value of n (not necessarily an integer) to meet the specifications of the major lobe. Keep 5 significant figures in your calculations. (b) Exact maximum directivity…
The figure below shows a radio-wave transmitter and a receiver separated by a distance d = 47.0 m and both a distance h = 27.0 m above the ground. The receiver can receive signals both directly from the transmitter and indirectly from signals that reflect from the ground. Assume the ground is level between the transmitter and receiver and a 180° phase shift occurs upon reflection. Determine the longest wavelengths that interfere in the following ways. O Transmitter Receiver (a) constructively (b) destructively
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