spot-beam antenna

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• spot beam antenna —    Satellite antenna able to concentrate on a limited portion of the earth s surface …   IT glossary of terms, acronyms and abbreviations

• Spot beam — A spot beam, in telecommunications parlance, is a satellite signal that is specially concentrated in power (i.e. send by a high gain antenna) so that it will cover only a limited geographic area on earth. Spot beams are used so that only earth… …   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

• GPS modernization — The United States Global Positioning System (GPS), having reached Fully Operational Capability on July 171995 [ [http://www.navcen.uscg.gov/gps/geninfo/global.htm Global Positioning System Fully Operational ] ] completed its original design goals …   Wikipedia

• Inmarsat — Infobox Company company name = Inmarsat plc company company type = Public (lse|ISAT) foundation = 1979 location = London, United Kingdom flag|UK key people = Andrew Sukawaty (Chairman and CEO) revenue = profit $576.5 million USD (2007)cite web… …   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

• Wireless energy transfer — or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous,… …   Wikipedia

• Iridium (satellite) — Infobox Company name = Iridium Satellite LLC type = Limited liability company genre = foundation = 2001 founder = location city = Bethesda, Maryland location country = United States location = locations = area served = Worldwide key people = Matt …   Wikipedia

• GPS signals — Global Positioning System (GPS) satellites broadcast radio signals to enable GPS receivers to determine location and synchronized time. Anatomy of a GPS signal GPS signals include ranging signals, used to measure the distance to the satellite,… …   Wikipedia

• Computers and Information Systems — ▪ 2009 Introduction Smartphone: The New Computer.       The market for the smartphone in reality a handheld computer for Web browsing, e mail, music, and video that was integrated with a cellular telephone continued to grow in 2008. According to… …   Universalium

• List of DirecTV channels — Below is a numerical representation of the DirecTV channel lineup. Some channels have both east and west feeds, airing the same programming with a three hour delay on the latter feed, creating a backup for those who missed their shows. The three… …   Wikipedia