DOI: 10.13140/RG.2.2.35842.79044

The antenna is a key component for reaching the maximum distance in a wireless communication system. The purpose of an antenna is to transform electrical signals into RF electromagnetic waves, propagating into free space (transmit mode) and to transform RF electromagnetic waves into electrical signals (receive mode) 2. Dipole (λ/2) Antennas A dipole antenna most commonly refers to a half-wavelength (λ/2). Figure 3 shows the typical emission pattern from a dipole antenna. The antenna is standing in the Z plane and radiating energy outwards. The strongest energy is radiated outward in the XY plane, perpendicular to the antenna.