A dipole antenna is a simple type of radio antenna that consists of two conductive elements, usually metal rods, which are aligned in a straight line. It is commonly used for transmitting and receiving radio waves. The length of each rod is typically half the wavelength of the frequency it is designed to operate on, making it efficient for various communication applications. Dipole antennas can be oriented horizontally or vertically, depending on the desired radiation pattern. They are popular in both amateur radio and commercial broadcasting due to their straightforward design and effectiveness. Additionally, dipole antennas can be easily constructed and installed, making them accessible for many users.