horn antennas

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• Horn antenna — Pyramidal microwave horn antenna, with a bandwidth of 0.8 to 18 GHz. A coaxial cable feedline attaches to the connector visible at top. This type is called a ridged horn; the curving fins visible inside the mouth of the horn increase the antenna… …   Wikipedia

• Horn Antenna — Infobox nrhp name =Horn Antenna nrhp type = nhl caption = location= Holmdel, New Jersey USA lat degrees = 40 lat minutes = 23 lat seconds = 29.43 lat direction = N long degrees = 74 long minutes = 11 long seconds = 6.91 long direction = W… …   Wikipedia

• Horn (telecommunications) — In telecommunications, the term horn has the following meanings:* In radio transmission, an open ended waveguide, of increasing cross sectional area, which radiates directly in a desired direction or feeds a reflector that forms a desired beam.… …   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

• Q-par Angus — is a designer and manufacturer of microwave and RF antennas for commercial and defence use. The company also provides expert specialist consultancy and research in the wider microwave engineering field:Some of their products include: *Antenna… …   Wikipedia

• Метод конечных разностей во временной области — (англ. Finite Difference Time Domain, FDTD)  один из наиболее популярных методов численной электродинамики, основанный на дискретизации уравнений Максвелла, записанных в дифференциальной форме. Содержание 1 Описание 2 Алгоритм Йи …   Википедия

• antenna — antennal, adj. /an ten euh/, n., pl. antennas for 1, antennae / ten ee/ for 2. 1. a conductor by which electromagnetic waves are sent out or received, consisting commonly of a wire or set of wires; aerial. 2. Zool. one of the jointed, movable,… …   Universalium

• British Telecom microwave network — The British Telecom microwave network was a network of point to point microwave radio links in the United Kingdom, operated at first by the General Post Office, and subsequently by its successor BT plc. From the late 1950s to the 1980s it… …   Wikipedia

• satellite communication — Introduction  in telecommunication, the use of artificial satellites to provide communications links between various points on Earth (Earth satellite). Communications satellites relay voice, video, and data signals between widely separated fixed… …   Universalium

• Ground-penetrating radar — (GPR) is a geophysical method that uses radar pulses to image the subsurface. This non destructive method uses electromagnetic radiation in the microwave band (UHF/VHF frequencies) of the radio spectrum, and detects the reflected signals from… …   Wikipedia

• Jagadish Chandra Bose — Infobox Scientist name = জগদীশ চন্দ্র বসু Jagadish Chandra Bose caption = Jagadish Chandra Bose in his lab birth date = birth date|1858|11|30|df=y birth place = Mymensingh, East Bengal (now Bangladesh), British India death date = death date and… …   Wikipedia