Category:Antennas

Beam antennas of radio station Tjimindi, circa 1920s. Courtesy Tropenmuseum of the Royal Tropical Institute (KIT)

A transducer which may receive or send signals by waves

Subcategories

• Antenna accessories - hardware associated with antennas including mounts, wires, rests, amplifiers
• Antenna radiation patterns - the directional dependence of the strength of radio waves
• Antenna theory - the scientific theory which drives the sending and receiving of waves
• Broadband antennas - antennas designed to connect people to the Internet
• Dielectric resonator antennas - an antenna which resonates in a narrow range of frequencies, usually in the microwave band
• Dipole antennas - an antenna with two poles and a center element
• Directive antennas - an antenna which transmits with greater power in one or more directions
• Helical antennas - an antenna with a conducting wire in the shape of a helix
• Horn antennas - an antenna with a horn shaped waveguide
• Microstrip antennas - antennas which use printed circuit boards
• Microwave antennas - antennas which send and receive microwave frequencies, often in the shape of parabolas
• Multifrequency antennas - antennas which can send and receive on multiple frequencies
• Patch antennas - an antenna with a low profile, often mounted on a flat surface
• Radar antennas - antennas used for radar object detection
• Reflector antennas - a receive which reflects electromagnetic waves
• Satellite antennas - a device used to send and receive signals to orbiting satellites
• Slot antennas - antennas consisting of a surface with a slot or hole cut out
• Transmission line antennas - devices which connect an antennas with a receiver or other components
• UHF antennas - antennas which transmit and receive ultra high frequency, often for television