A dipole antenna is an RF antenna that radiates electromagnetic signals via the current between its two poles. Both poles consist of conductive elements like wires or rods, and receive the signal either directly from a source at the antenna’s base or remotely by way of a feeder hooked up to a receiver. Half wave dipole antennas are the most common variety; when referring to dipole antenna, a half wave dipole is generally what comes to mind. Due to its length, precisely half a wavelength long, a half-wave dipole is especially resonant. Other varieties include short, folded, non-resonant and multiple half wave dipole antenna.