What are the foundations of the antenna?
Antenna, also called Aerial , is a device made of metal bars and conductors and sometimes other materials. The word comes through Latin from Greek, which referred to both insect sensory pendants and Yardarm, Spar attached to the mast to support the sail, and therefore protruded from the mast at an angle, similar to the way the antenna stands out of the insects. The purpose of the antenna is to radiate and receive radio signals. The foundations of the antenna include the basics of how the antennas work, the main use that is inserted antenna, and the main types of antennas.
The foundations of the antenna, as the antennas operate the antennas transmission converts electrical current into electromagnetic radio waves and projects them into space. On the other hand, receiving antennas converts electromagnetic waves back to electric current. Antennas that both recover and transmission do both.
The main applications in which antennas are used are the second element antennaChildren. Television and radio antennas have long been used in many homes. TV antennas are designed to receive transmitting television signals. Domestic radio antennas for radio AM and FM are used only for reception, while CB radios, ham radios and two -way antennas have antennas that can receive and send signals. Other uses include wireless ropes (Local Area Networks), mobile phones, WiFi, GPS (Global Positioning System) and Radar.
One of the other elements of the foundations of the antenna are types of antennas. In addition to being described by use, the antennas are written in their construction. Television antennas include dipole antennas-some of them are called rabbit ears , stacked dipoles, reflector antennas, log-periodic dipole field (LPDA) and Yagi antenna. Radio antenna types include short so -called reverse duck antennas, which, for example, come with portable radio radio radios CB; antennas of the tower; Omni-way/one-way antenna that changes to function according toorientation; and dipole antennas. CB antennas are made for basic stations, CB mobile radio and portable CB radios. Another way of writing antennas is the location. There are indoor and outdoor antennas and those mounted on roofs, vehicles and towers.