High gain variable beam WI-FI antenna
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United States of America Patent
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Dec 6, 2016
Grant Date -
Oct 29, 2015
app pub date -
Apr 28, 2014
filing date -
May 1, 2013
priority date (Note) -
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Abstract
This invention discloses a design and application of a variable beam antenna optimized for WI-HI application in data, video and voice transmission between various systems with an emphasis on medical monitoring. The subject antenna consists of a unique group of dipole radiators that are excited by zigzag feed lines and perform together as an array. This antenna is unique because it can provide various high gain beams by simply applying electrical shorts at the cross points in the feed lines. The shorts can be created mechanically or electronically. The antenna beam coverage can range from 15° to 110°- wide in H plane and maintains a constant beam width of 60° in E plane. The shorts are applied to reduce the antenna effective aperture, thereby increasing the beam width of the antenna. The current that flows to the outer dipoles are cut-off due to the shorts.
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