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A Marconi antenna has length equal to ________

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A Marconi antenna has length equal to ________

(a) ^ʎ⁄4

(b) ^ʎ⁄2

(c) 1

(d) ^ʎ⁄8

I had been asked this question in an online quiz.

The question is from Problems of DSBSC in portion Double Sideband Suppressed Carrier Modulation of Analog Communications

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Best answer
The correct option is (a) ^ʎ⁄4

To elaborate: Marconi antenna is like a vertical wire having length one fourth of the working wavelength. Thus, it is a quarter-wave monopole antenna. Since, it was invented by Guglielmo Marconi, so it’s also called Marconi Antenna. It requires a ground plane with very good conductivity. Hence it is also called as a grounded antenna.

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