Frequently Asked Questions On Antenna Theory With Answers -12.


This page contains basic questions and short notes on some of the keywords on antenna theory:


56) Give the expression for the effective aperture of a short dipole?

The effective aperture of a short dipole is given by Ae = 0.119 λ2.


57) What is a dipole antenna?

A dipole antenna may be defined as a symmetrical antenna in which the two ends are at equal potential relative to the midpoint.


58) What is a half wave dipole?

A half wave antenna is the fundamental radio antenna of metal rod or tubing or thin wire which has a physical length of half wavelength in free space at the frequency of operation.


59) Give the expression for the effective aperture of a Half wave Dipole?

The effective aperture of a half wave dipole is given by
Ae = 0.13 λ2.


60) What is the radiation resistance of a half wave dipole?

The radiation resistance of a half wave dipole is given by
Rr = 73 ohm.

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