Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Other Engineering Expert

Q1. In your own words, describe the following: a) affective aperture, b) array factor, c) Friis equation, d)Antenna H-plane and E-plane, e) radiation resistance

Q2. An antenna in free-space driven by current Io radiates far-field E as:

, for 0 ≤Φ ≤ π, here C = constant

= 0 everywhere else

a) Compute the power density, b) Compute the total radiated power, c) Compute the gain and directivity (D) of the antenna

Q3. Four Hertzian dipoles (oriented in the z-dir.) are placed on an x-y plane with spacing (d=λo/2) between them as shown in figure.

a) Derive the array factor for this setup

b) Determine the total far-field

2428_Hertzian dipole.jpg


Q4. A 90° perfectly conducting corner cube reflector has a shortdipole (oriented in the z-direction) placed at a distance d from the vertex. The antenna is fed by current Io.
a) Find the equivalent array of dipoles by determining a system of images

b) Derive the array factor

c) Determine the total far-field (E)

d) For a distance d=0.5λ, find out the directivity on y-axis

2081_Antenna.jpg

Q5. Design a rectangular patch antenna (substrate: εr = 3, tan-δ=0, h = 0.75 mm) operating at f0 = 2.5 GHz
a) Determine the dimensions W and L of the antenna, assume w/λo << 1

b) The antenna is to be matched to 100Ω using recessed feeding line. Design the recessed length (L1) to match the antenna to the feed line.

c) This antenna design is now used in an array of (2X1, side by side placement).
C1. In which direction does the main radiation beam points if the antennas are symmetrically fed.
C2. In which direction does the main radiation beam points if the antennas are fed with different length transmission lines that gives rise to a phase difference of 0.75 between them.

Other Engineering, Engineering

  • Category:- Other Engineering
  • Reference No.:- M92036

Have any Question? 


Related Questions in Other Engineering

Telecommunications engineering assignmenttopic fixed

Telecommunications engineering assignment Topic: Fixed wireless broadband internet access Introduction 1. Definition 2. How it work 3. Highspeed internet chioces : DSL , 4G wireless call phone internet. Theard point writ ...

Problem 1nbspnbspnbspa letnbsphand calculate ab a-b ab ba

Problem 1:    (a) Let  Hand calculate A+B, A-B, AB, BA, CA, CB, and AC T . (b) Use MATLAB to verify your calculations. Problem 2: (a) Let Hand calculate |A|, r A , and A -1 if it exists. (b) Hand calculates the eigenvalu ...

Microprocessors projectoverviewyou are required to complete

MICROPROCESSORS PROJECT Overview You are required to complete a final project for this course. It requires you to build a fully functional prototype of a standalone gadget which will be an alarm clock and will also displ ...

Part -1chapter 1 - introduction introduce the project

Part -1: CHAPTER 1 - Introduction: Introduce the project problem; define the scope, aim and objectives of the investigations. CHAPTER 2 - Literature Review: Describe the literature/ theory reviewed which are relevant to ...

Assignmentdiscussionanalog integrated circuits amp

Assignment Discussion Analog Integrated Circuits & Lab Op-Amp Application and Datasheets Directions: Please answer BOTH of the questions and respond to a minimum of two of your classmates. Question A Discuss why it is im ...

Ac models1the impedance of a capacitor is inversely

AC Models 1. The impedance of a capacitor is inversely proportional to the frequency and the capacitor effectively blocks dc voltage. a. True b. False 2. A coupling capacitor couples an ac signal into an amplifier withou ...

1 the 2d diffusion equation ut dnabla2u is discretized

1. The 2D diffusion equation u t = D∇ 2 u is discretized using the Finite Difference method as (u i,j n+1 - u i,j n )/DΔt = γ[(u i+1 n+1 ,j - 2u i,j n+1 + u i-1 n+1 ,j )/Δx 2 + u i,j+1 n+1 ,j - 2u i,j n+1 + u i-1 n+1 /Δy ...

Problem 1a router is used to cut locating notches on a

Problem 1 A router is used to cut locating notches on a printer circuit board. The vibration level at the surface of the board as it is cut, is considered to be a major source of dimensional variation (lower the better) ...

1 simplify the expressions using boolean algebra and its

1. Simplify the expressions using Boolean algebra and its identities: X'Y + XYZ' + Y' + XZ (Y+Y') = 1 2. The academic director wants to select students in Sydney Study Center to give them Gala Dinner Award. The recipient ...

Technical comminucations englpart 1take-away please respond

Technical Comminucations ENGL Part 1 "Take-Away" Please respond to the following: Imagine it is 10 years from today. Identify two things you learned in this course that you couldn't have imagined being successful without ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro