If the spacing between turns of the helical antenna is zero then it acts as a ________(a) Loop antenna(b) Linear dipole(c) Parabolic antenna(d) Log periodic antennaI got this question during an interview for a job.This interesting question is from Frequency Independent Antenna in chapter Frequency Independent Antenna of Antennas

If the spacing between turns of the helical antenna is zero then it ac

1.	If the spacing between turns of the helical antenna is zero then it acts as a ________(a) Loop antenna(b) Linear dipole(c) Parabolic antenna(d) Log periodic antennaI got this question during an interview for a job.This interesting question is from Frequency Independent Antenna in chapter Frequency Independent Antenna of Antennas
Answer» Correct choice is (a) Loop antenna To explain I would say: The radiation PATTERN of a helical antenna is a COMBINATION of SMALL DIPOLE and loop antenna. The helical antennas behave like a loop antenna when spacing between turns becomes zero. It becomes a linear dipole when the diameter is zero that means itch angle is zero. PARABOLIC is a reflector antenna. Helical antenna is a wire antenna.

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