Which answer is correct for this Antenna and Wave Propagation homework problem?

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SUMMARY

The discussion centers on a homework problem related to antenna and wave propagation, specifically addressing the interpretation of "omnidirectional" radiation patterns. Participants express confusion over the correct answer, with one suggesting that the answer should be (a), while the textbook states (d). Clarification is sought regarding the definition of omnidirectional, with suggestions that it may refer to a spherical radiation pattern or a specific plane related to dipole antennas. Additionally, the calculation of the array factor and the angle for maxima is proposed as a necessary step in solving the problem.

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  • Understanding of antenna radiation patterns
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  • Knowledge of array factor calculations
  • Basic principles of wave propagation
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Students studying electrical engineering, particularly those focusing on antenna theory and wave propagation, as well as educators looking for clarification on common misconceptions in antenna radiation patterns.

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Homework Statement


I have attached the photo of the problem below.

Homework Equations

The Attempt at a Solution


According to me answer should be (a) but book is giving answer as (d).
 

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Dhruv said:

Homework Statement


I have attached the photo of the problem below.

Homework Equations

The Attempt at a Solution


According to me answer should be (a) but book is giving answer as (d).

What do they mean by "omnidirectional" here? Like a spherical radiation pattern? Or omnidirectional in the plane that is perpendicular to a dipole antenna?

I also agree that d is a strange answer, but knowing what they mean by omnidirectional may help...
 
L
berkeman said:
What do they mean by "omnidirectional" here? Like a spherical radiation pattern? Or omnidirectional in the plane that is perpendicular to a dipole antenna?

I also agree that d is a strange answer, but knowing what they mean by omnidirectional may help...
Like a spherical radiation pattern.
 
berkeman said:
What do they mean by "omnidirectional" here? Like a spherical radiation pattern? Or omnidirectional in the plane that is perpendicular to a dipole antenna?

I also agree that d is a strange answer, but knowing what they mean by omnidirectional may help...
I should calculate the array factor correct ? And then from there I should calculate angle for maxima ?
 
Help please .
 

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