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The impedance at the center of the antenna is known as?

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The impedance at the center of the antenna is known as?

(a) Characteristic impedance

(b) Radiation resistance

(c) Transmission impedance

(d) Recovery resistance

I have been asked this question during an online interview.

Origin of the question is Types of Antenna in section Antennas and Wave Propagation of Avionics

1 Answer

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Right option is (b) Radiation resistance

Explanation: The transmission line is connected at the center. The dipole has an impedance of 73 V at its center, which is the radiation resistance. At the resonant frequency, the antenna appears to be a pure resistance of 73 V.

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