TAILIEUCHUNG - Fiber Optics Illustrated Dictionary - Part 74

The Fiber Optics Illustrated Dictionary - Part 74 fills a gap in the literature by providing instructors, hobbyists, and top-level engineers with an accessible, current reference. From the author of the best-selling Telecommunications Illustrated Dictionary, this comprehensive reference includes fundamental physics, basic technical information for fiber splicing, installation, maintenance, and repair, and follow-up information for communications and other professionals using fiber optic components. Well-balanced, well-researched, and extensively cross-referenced, it also includes hundreds of photographs, charts, and diagrams that clarify the more complex ideas and put simpler ideas into their applications context | Fiber Optics Illustrated Dictionary the motion of objects and are used in the manufacture of reflectors and antennas. See parabolic antenna parabolic reflector. Parabolic Antenna Examples feed horn parabolic reflector supporting struts This roof-mounted parabolic antenna is about 8feet across and uses a mesh parabola to reduce weight and wind resistance. One of the bigger challenges in telecommunications is designing antennas and transmissions technologies that can communicate over vast distances in the inclement. radiation-high temperature-fluctuating environments characteristic of space. The Cassini Saturn probe shown here in its testing phases in 1996 is equipped on top with a parabolic radio antenna provided by the Italian Space Agency ASl . NASA JPL image detail. parabolic antenna An antenna designed with a characteristic parabolic dish shape that captures a directional beam and focuses it usually through a feed horn. This shape is especially appropriate for very short directional transmission waves such as microwaves and the diameter of the antenna is designed to correspond with a multiple of the length of the wavelength being received. Parabolic antennas may be made from a variety of materials solid metal mesh metal fiberglass. This style of antenna is commonly used for microwave satellite transmissions though it is also used for some long-distance space applications such as space probe communications. See antenna feed horn microwave antenna low noise amplifier reflector An antenna or other reflector which utilizes the characteristics of the shape of a parabola to concentrate and direct reflecting beams. See parabola parabolic antenna. paradigm A clear or typical example a standard ideal or archetype. paradigm shift A fundamental significant change in the way something is perceived or understood particularly if it has been taken for granted or assumed to be true for a long time or by a majority of the population. In other words the situation or thing itself

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