Reciprocity applies to which of the following devices?(a) Isolator(b) Circulator(c) Balun(d) RF amplifiersThe question was posed to me in unit test.This is a very interesting question from Types of Baluns in chapter Radiation, Baluns & Polarization of Antennas

Reciprocity applies to which of the following devices?(a) Isolator(b)

1.	Reciprocity applies to which of the following devices?(a) Isolator(b) Circulator(c) Balun(d) RF amplifiersThe question was posed to me in unit test.This is a very interesting question from Types of Baluns in chapter Radiation, Baluns & Polarization of Antennas
Answer» CORRECT answer is (c) Balun The best explanation: In a Balun, a 3 PORT network, contains ONE MATCHED input and two differential outputs. It is used to convert the unbalanced signal to BALANCED and vice-versa. So it is reciprocal. Isolator, Circulator, RF amplifiers are Non reciprocal devices.

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