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transmitting dipole

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  • Dipole antenna — A schematic of a half wave dipole antenna connected to an unbalanced coaxial cable. Better practice is to connect the balanced dipole to the unbalanced line with a balun. A dipole antenna is a radio antenna that can be made of a simple wire, with …   Wikipedia

  • dipole antenna — noun an aerial half a wavelength long consisting of two rods connected to a transmission line at the center • Syn: ↑dipole • Hypernyms: ↑antenna, ↑aerial, ↑transmitting aerial * * * dipole antenna, a radio or television antenna having two… …   Useful english dictionary

  • transmitting aerial — noun an electrical device that sends or receives radio or television signals • Syn: ↑antenna, ↑aerial • Derivationally related forms: ↑antennary (for: ↑antenna), ↑antennal (for: ↑ …   Useful english dictionary

  • electric dipole — Pair of equal and opposite electric charges, the centres of which do not coincide. An atom in which the centre of the negative cloud of electrons has been shifted slightly away from the nucleus by an external electric field is an induced electric …   Universalium

  • Ground dipole — A Ground dipole, or Ground antenna, is a special type of antenna which consists of two electrodes positioned in the ground.=Description=Ground dipole antennas are usually used for transmitting and receiving on the ELF and VLF bands. The antenna… …   Wikipedia

  • Start Point transmitting station — The Start Point transmitting station is a broadcasting facility at Start Point, Devon, owned by National Grid Wireless. The site is just north west of the Start Point lighthouse.The station currently transmits a single broadcast: BBC Radio 5 Live …   Wikipedia

  • Antenna (radio) — Whip antenna on car …   Wikipedia

  • History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …   Wikipedia

  • Loop antenna — A shortwave loop antenna A loop antenna is a radio antenna consisting of a loop (or loops) of wire, tubing, or other electrical conductor with its ends connected to a balanced transmission line. Within this physical description there are two very …   Wikipedia

  • Radiation pattern — Three dimensional antenna radiation patterns. The radial distance from the origin in any direction represents the strength of radiation emitted in that direction. The top shows the directive pattern of a horn antenna, the bottom shows the… …   Wikipedia

  • Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …   Wikipedia

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