- #1
sparkle123
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In the middle picture, since the current is directed downward (I think), by the right hand rule shouldn't the magnetic field lines be clockwise?
Thanks!
The direction of the magnetic field in an antenna is perpendicular to the direction of the electric field and also perpendicular to the direction of propagation of the electromagnetic wave.
The direction of the magnetic field has a direct impact on the polarization of the electromagnetic wave, which in turn affects the gain and efficiency of the antenna. A mismatch in the direction of the magnetic field can result in decreased performance of the antenna.
The direction of the magnetic field in an antenna is determined by the geometry and design of the antenna. It is not easily changeable, but can be altered by adjusting the orientation or position of the antenna.
No, the direction of the magnetic field can vary depending on the type of antenna. For example, a dipole antenna has a magnetic field that is perpendicular to the axis of the antenna, while a loop antenna has a magnetic field that is parallel to the axis of the antenna.
The direction of the magnetic field plays a crucial role in determining the shape and orientation of the radiation pattern of an antenna. It is directly connected to the directionality and polarization of the electromagnetic wave emitted by the antenna.