The Marconi antenna has a physical length of:

The Marconi antenna has a physical length of:
| The Marconi antenna has a physical length of:

A. <span class="math-tex">\(\frac{\lambda }{2}\)</span>

B. <span class="math-tex">\(\frac{\lambda }{4}\)</span>

C. &lambda;

D. <span class="math-tex">\(\frac{\lambda }{8}\)</span>

Please scroll down to see the correct answer and solution guide.

Right Answer is: B

SOLUTION

Marconi Antenna is also known as quarter-wave Antenna or the Grounded Antenna.

The principle of a Marconi antenna mounted ON the surface of the earth.

  • The transmitter is connected between the bottom of the antenna and the earth.
  • Although the Antenna is only “one-Quarter wavelength”, the reflection or image in the earth is equivalent to another quarter-wave antenna.
  • By this Arrangement, a half-wave operation can be obtained from an antenna only 0 Quarter wavelength long.
  • Hertz Antenna: Any Antenna is one-half wavelength long is Hertz Antenna, may be mounted vertically or horizontally.


Note:

Electrically, a Marconi Antenna operates as a Hertz Antenna, but physically it is only a Quarter wavelength (λ/4) long.

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