ELECTRONIC ARTICLE SURVEILLANCE ANTENNA FOR ATTACHMENT TO A VERTICAL STRUCTURE
An acousto-magnetic electronic article surveillance antenna (1) is provided that attaches directly to a vertical structure (2) with the electromagnetic field (9) projected across an opening (10), such as an exit or entrance to a building or other defined area. The vertical structure could be a doorf...
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creator | VALADE, FRANKLIN H., JR COULSON, PAUL G FERNANDEZ, GILBERT FORNEY, JAN B CLUCAS, ROBERT |
description | An acousto-magnetic electronic article surveillance antenna (1) is provided that attaches directly to a vertical structure (2) with the electromagnetic field (9) projected across an opening (10), such as an exit or entrance to a building or other defined area. The vertical structure could be a doorframe or wall, constructed from a wide variety of materials, including metal, wood, glass, concrete or gypsum wallboard. The antenna geometry (14, 15) is elongated vertically to allow a corresponding decrease in width projected fr om the vertical structure, thereby reducing the apparent size of the antenna an d providing a near-concealed appearance and protection from physical damage. |
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The vertical structure could be a doorframe or wall, constructed from a wide variety of materials, including metal, wood, glass, concrete or gypsum wallboard. 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The vertical structure could be a doorframe or wall, constructed from a wide variety of materials, including metal, wood, glass, concrete or gypsum wallboard. The antenna geometry (14, 15) is elongated vertically to allow a corresponding decrease in width projected fr om the vertical structure, thereby reducing the apparent size of the antenna an d providing a near-concealed appearance and protection from physical damage.</ SDOAB></abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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subjects | ALARM SYSTEMS ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS CALCULATING COMPUTING COUNTING DETECTING MASSES OR OBJECTS ELECTRICITY GEOPHYSICS GRAVITATIONAL MEASUREMENTS HANDLING RECORD CARRIERS MEASURING ORDER TELEGRAPHS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS SIGNALLING SIGNALLING OR CALLING SYSTEMS TESTING |
title | ELECTRONIC ARTICLE SURVEILLANCE ANTENNA FOR ATTACHMENT TO A VERTICAL STRUCTURE |
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