Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 41 views

    10EC011

    Uploaded by

    krishnagdeshpande
    This document contains exam questions for a Ph.D./M.Sc. engineering degree examination in Antenna Theory and Design. It includes 8 questions covering topics such as radiation patterns, directivity and gain, Yagi-Uda antennas, microstrip antennas, array factors, pattern multiplication, feeding techniques, helical antennas, lag-periodic antennas, parabolic reflector antennas, dual reflector antennas, sampling methods, integral equations, and diffraction theories. Candidates must answer any 5 of the 8 questions in detail within the 3 hour exam period.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    10EC011

    Uploaded by

    krishnagdeshpande
    41 views1 page
    This document contains exam questions for a Ph.D./M.Sc. engineering degree examination in Antenna Theory and Design. It includes 8 questions covering topics such as radiation patterns, directivity and gain, Yagi-Uda antennas, microstrip antennas, array factors, pattern multiplication, feeding techniques, helical antennas, lag-periodic antennas, parabolic reflector antennas, dual reflector antennas, sampling methods, integral equations, and diffraction theories. Candidates must answer any 5 of the 8 questions in detail within the 3 hour exam period.

    Original Description:

    mnmmm

    Original Title

    10EC011 (1)

    Copyright

    © © All Rights Reserved

    Available Formats

    PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    This document contains exam questions for a Ph.D./M.Sc. engineering degree examination in Antenna Theory and Design. It includes 8 questions covering topics such as radiation patterns, directivity and gain, Yagi-Uda antennas, microstrip antennas, array factors, pattern multiplication, feeding techniques, helical antennas, lag-periodic antennas, parabolic reflector antennas, dual reflector antennas, sampling methods, integral equations, and diffraction theories. Candidates must answer any 5 of the 8 questions in detail within the 3 hour exam period.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    41 views1 page

    10EC011

    Uploaded by

    krishnagdeshpande
    This document contains exam questions for a Ph.D./M.Sc. engineering degree examination in Antenna Theory and Design. It includes 8 questions covering topics such as radiation patterns, directivity and gain, Yagi-Uda antennas, microstrip antennas, array factors, pattern multiplication, feeding techniques, helical antennas, lag-periodic antennas, parabolic reflector antennas, dual reflector antennas, sampling methods, integral equations, and diffraction theories. Candidates must answer any 5 of the 8 questions in detail within the 3 hour exam period.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    You are on page 1of 1

    10EC011

    USN

    Ph.D./M.Sc. (Engg.) by Research Degree Examination, April/May 2014


    Antenna Theory and Design
    Time: 3 hrs.

    Max. Marks:100
    Note: Answer any FIVE full questions.

    a. Explain radiation pattern of an antenna.


    b. Define directivity and gain and establish the relation between them.
    c. Write short notes on radiation efficiency.

    (07 Marks)
    (07 Marks)
    (06 Marks)

    a. With the neat sketch, explain Yagi-Uda antenna.


    b. Explain microstrip antenna with its advantages.

    (10 Marks)
    (10 Marks)

    a. Derive an expression for array factor for n-point sources with same amplitude, inphase,
    separated by distance of /2 meters. Draw the radiation pattern also.
    (10 Marks)
    b. Write short notes on:
    i)
    Pattern multiplication
    ii)
    Feeding technique.
    (10 Marks)

    a. Explain the design consideration of the monofiler axial mode helical antennas with the
    expression.
    (10 Marks)
    b. Explain the general characteristic of lag-periodic antenna with the sketch.
    (05 Marks)
    c. Determine the cutoff frequencies and bandpass of a lag periodic dipole array with a design
    factor of .7. Ten dipoles are used in the structure, the smallest having a dimension l/2 equal
    to 0.3m.
    (05 Marks)

    a. Explain the working of a parabolic, reflector antenna with a neat sketch.


    b. Explain the concept of dual reflector antenna.

    (10 Marks)
    (10 Marks)

    Write short notes on:


    a. Woodward-Lawson sampling method.
    b. Taylor-line source method.

    (10 Marks)
    (10 Marks)

    a. Derive the expression for Pocklingtons integral equation.


    b. Explain with mathematical steps Kirchoffs networking equations.

    (10 Marks)
    (10 Marks)

    a. Give the explanation for the optics wedge diffraction theory.


    b. Explain the mechanism of radiation by a monopole on a finite ground plane.

    (10 Marks)
    (10 Marks)

    *****

    You might also like