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log-periodic line

См. также в других словарях:

  • Log-periodic antenna — In telecommunication, a log periodic antenna (LP, also known as a log periodic array) is a broadband, multielement, unidirectional, narrow beam antenna that has impedance and radiation characteristics that are regularly repetitive as a… …   Wikipedia

  • Almost periodic function — In mathematics, almost periodic functions are functions of a real number that are periodic up to a small error, first studied by Harald Bohr. There are generalizations to almost periodic functions on locally compact abelian groups. Almost… …   Wikipedia

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

  • Kolchuga passive sensor — The Kolchuga passive sensor is an ESM system developed in Ukraine. Its detection range is limited by line of sight but may be up to 800 km (500 miles) for very high altitude, very powerful emitters. Frequently referred to as Kolchuga Radar , the… …   Wikipedia

  • 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

  • List of electronics topics — Alphabetization has been neglected in some parts of this article (the b section in particular). You can help by editing it. This is a list of communications, computers, electronic circuits, fiberoptics, microelectronics, medical electronics,… …   Wikipedia

  • Gold as an investment — Reserves of SDR, forex and gold in 2006 …   Wikipedia

  • Rhombic antenna — signal gathering action compared to other end fire, backfire and traveling wave types. A rhombic antenna is a broadband directional antenna co invented by Edmond Bruce and Harald Friis,[1] mostly commonly used in HF (high frequency, also called… …   Wikipedia

  • Fractal antenna — A fractal antenna is an antenna that uses a fractal, self similar design to maximize the length, or increase the perimeter (on inside sections or the outer structure), of material that can receive or transmit electromagnetic signals within a… …   Wikipedia

  • Parabolic antenna — A parabolic satellite communications antenna at Erdfunkstelle Raisting, the biggest facility for satellite communication in the world, in Raisting, Bavaria, Germany. It has a Cassegrain type feed. A parabolic antenna is an antenna that uses a… …   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

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