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The real part of an antenna’s input impedance is due to ________

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The real part of an antenna’s input impedance is due to ________

(a) SWR

(b) radiated signal

(c) reflected signal

(d) refracted signal

I have been asked this question during an online exam.

The query is from Time Division Multiplexing topic in division Multiplexing & Sampling of Bandpass Signal of Analog Communications

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Right choice is (b) radiated signal

Easy explanation: In antenna impedance, impedance related the voltage and current at the input of the antenna. The real part of antenna impedance represents power that is either radiated away or absorbed within the antenna and the imaginary part of antenna impedance represents power that is stored in the near field of antenna.

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