A dipole is probably the simplest form of antenna, composed of two "arms" stretching in opposite directions.It is the most common form of antenna found in UHF and MW tags.
The lenght of the dipole is related to the wavelength - with the half wavelenght folded dipole being the most common design.
The relative orientation of the dipole is essential for the correct operation of the RFID System. The dipole antenna has a linear polarisation, parallel to the antenna lenght.
