Antenna

Physics of antennas

Physics of antennas
  1. How do antennas work in physics?
  2. What are aerials physics?
  3. What is the basic radiation principle of an antenna?
  4. How do antennas radiate?

How do antennas work in physics?

How does an antenna work? The antenna at the transmitter generates the radio wave. A voltage at the desired frequency is applied to the antenna. The voltage across the antenna elements and the current through them create the electric and magnetic waves, respectively.

What are aerials physics?

In radio engineering, an antenna or aerial is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver.

What is the basic radiation principle of an antenna?

The energy radiated by an antenna is represented by the Radiation pattern of the antenna. Radiation Patterns are diagrammatical representations of the distribution of radiated energy into space, as a function of direction.

How do antennas radiate?

Radiation from an antenna is due to the time-varying current that is excited by the bound electrical signal applied to the antenna terminals.

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