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A Balun is used to make the current along the outer side of the outer conductor along the coaxial cable _______

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A Balun is used to make the current along the outer side of the outer conductor along the coaxial cable _______

(a) Zero

(b) Maximum

(c) Maximum or minimum depends on power supply

(d) Infinity

This question was addressed to me in semester exam.

This question is from Baluns topic in portion Radiation, Baluns & Polarization of Antennas

1 Answer

+1 vote
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Best answer
Right choice is (a) Zero

To explain I would say: When a coaxial cable is connected to a half wave dipole, the current distribution along the outer side of the outer conductor may also present. It results in loss and field mismatch. So a Balun is used to make the current at the outer side of the outer conductor zero. Current distribution is present at the inner side of the outer conductor.

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