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For a Balun to work effectively, it must have ____ impedance for common mode currents and ____ impedance for differential mode current.

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For a Balun to work effectively, it must have ____ impedance for common mode currents and ____ impedance for differential mode current.

(a) high, low

(b) low, high

(c) high, high

(d) low, low

This question was addressed to me in homework.

This intriguing question comes from Types of Baluns in portion Radiation, Baluns & Polarization of Antennas

1 Answer

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Correct answer is (a) high, low

The best explanation: Since Balun have to minimize the common mode currents it should have High impedance.

For differential mode currents it must have low impedance.

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