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Consider a 9:1 Balun (unbalanced to balance conversion); if the unbalanced impedance is RΩ then the balanced impedance will be _____Ω.

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Consider a 9:1 Balun (unbalanced to balance conversion); if the unbalanced impedance is RΩ then the balanced impedance will be _____Ω.

(a) 9R

(b) 3R

(c) 0.11R

(d) 0.45R

This question was addressed to me during an interview.

This is a very interesting question from Types of Baluns topic in chapter Radiation, Baluns & Polarization of Antennas

1 Answer

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Best answer
The correct choice is (a) 9R

The best explanation: A 1:9 Balun represents that the balanced impedance is 9 times the unbalanced impedance.

⇨ Balanced impedance =9×R=9R

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