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) InfinityThis question was addressed to me in semester exam.This question is from Baluns topic in portion Radiation, Baluns & Polarization of Antennas

A Balun is used to make the current along the outer side of the outer

1.	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) InfinityThis question was addressed to me in semester exam.This question is from Baluns topic in portion Radiation, Baluns & Polarization of Antennas
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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