Antenna Parameters

Antenna Parameters

For access to this article, please select a purchase option:

Buy chapter PDF
(plus tax if applicable)
Buy Knowledge Pack
10 chapters for £75.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Antennas: Fundamentals, design, measurement — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

This book is primarily concerned with the electromagnetic design and performance of antennas. Often of almost equal practical importance are the mechanical design factors, some of which will be mentioned throughout the book in connection with related discussions of electromagnetic behavior. It is desirable, however, for the reader to have some general feeling for the structural factors in the design of antennas, as an aid in relating the somewhat abstruse electromagnetic concepts to real physical structures. A thumbnail sketch of some of these aspects of antenna design will be given here, before the definition of electromagnetic parameters is taken up.

Chapter Contents:

  • 3.1 Antenna Structures
  • 3.1.1 Size
  • 3.1.2 Supports
  • 3.1.3 Feed Lines
  • 3.1.4 Conductors
  • 3.1.5 Insulators
  • 3.1.6 Weather Protection
  • 3.2 Radiation Pattern
  • 3.2.1 Coordinate Systems
  • 3.2.2 Definition of Pattern
  • 3.2.3 Patterns in a Plane
  • 3.2.4 Absolute and Relative Patterns
  • 3.2.5 Near-Field and Far-Field Patterns
  • 3.2.6 Free-Space and Earth-Reflection Patterns
  • 3.3 Directivity and Gain
  • 3.3.1 Definitions of Directivity and Gain
  • 3.3.2 Solid Angle
  • 3.3.3 Radiation Intensity
  • 3.3.4 Directivity
  • 3.3.5 Gain
  • 3.4 Effective Area and Friis Transmission Equation
  • 3.5 Beamwidth
  • 3.5.1 Practical Significance of Beamwidth
  • 3.5.2 Beamwidth Definition
  • 3.5.3 Principal-Plane Beamwidths
  • 3.6 Minor Lobes
  • 3.7 Radiation Resistance and Efficiency
  • 3.8 Input Impedance
  • 3.9 Bandwidth
  • 3.10 Polarization
  • 3.11 Interdependencies of Gain, Beamwidths, and Aperture Dimensions
  • References
  • Problems and Exercises

Inspec keywords: antenna radiation patterns

Other keywords: electromagnetic behavior; antenna parameters; antenna performance; electromagnetic parameters; antenna electromagnetic design; thumbnail sketch; mechanical design factors

Subjects: Single antennas; Antenna theory

Preview this chapter:
Zoom in

Antenna Parameters, Page 1 of 2

| /docserver/preview/fulltext/books/ew/sbew040e/SBEW040E_ch3-1.gif /docserver/preview/fulltext/books/ew/sbew040e/SBEW040E_ch3-2.gif

Related content

This is a required field
Please enter a valid email address