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Which of the following is false regarding Transformer Balun?

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in Antennas by (157k points)
Which of the following is false regarding Transformer Balun?

(a) It has a narrow band frequency

(b) It has infinitely wide band frequency

(c) Ideally it provides zero insertion loss

(d) Impedance matching is adjusted by its turn ratio

I had been asked this question during an online exam.

Enquiry is from Baluns topic in section Radiation, Baluns & Polarization of Antennas

1 Answer

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The correct option is (a) It has a narrow band frequency

To elaborate: A transformer Balun has ideally infinite wide band frequency and provides zero insertion loss. By changing the number of turns we can modify the impedance only when the input and output impedances are only resistive.

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