why do antennas become more sensitive if we apply voltage to them?

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why do antennas become more sensitive if we apply voltage to them?

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3 Answers

Anonymous 0 Comments

Antennas them self are not really affected by a DC voltage.

However there are some kind of antennas (called active antennas), which contain already some kind of amplifier which makes the signal stronger and the antenna more sensitive. Without applying a voltage that amplifier cannot work properly.

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