A λ/2 dipole can be modeled as a resonator, a transmission line with reflection from the open circuit at both ends.versine said:
Charge oscillates in an electric dipole antenna because of the alternating current (AC) that is applied to it. This creates an electric field that causes the charges in the antenna to move back and forth, resulting in an oscillating charge.
An electric dipole antenna works by converting electrical energy into electromagnetic radiation. The alternating current in the antenna creates an oscillating charge, which in turn creates an oscillating electric field. This electric field then radiates outwards as electromagnetic waves.
The length of the dipole in an electric dipole antenna is important because it determines the frequency of the electromagnetic waves that are emitted. A longer dipole will emit lower frequency waves, while a shorter dipole will emit higher frequency waves.
The orientation of an electric dipole antenna affects its performance by determining the direction in which the electromagnetic waves are emitted. For maximum efficiency, the antenna should be oriented perpendicular to the direction of the waves it is receiving or transmitting.
Yes, an electric dipole antenna can be used for both transmitting and receiving signals. When an alternating current is applied to the antenna, it will emit electromagnetic waves. Conversely, when electromagnetic waves of the appropriate frequency are received by the antenna, they will induce an alternating current in the antenna, which can then be used to detect the signal.