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dc.date.accessioned2016-08-24T17:54:05Z
dc.date.available2016-08-24T17:54:05Z
dc.date.issued1999-07-20
dc.identifier.urihttp://hdl.handle.net/10919/72394
dc.description.abstractA foursquare dual polarized moderately wide bandwidth antenna radiating element is provided which, due to its small size and low frequency response, is well suited to array applications. The foursquare element comprises a printed metalization on a low-loss substrate suspended over a ground plane reflector. Dual linear (i.e., horizontal and vertical), as well as circular and elliptical polarizations of any orientation may be produced with the inventive foursquare element. Further, an array of such elements can be modulated to produce a highly directive beam which can be scanned by adjusting the relative phase of the elements. Operation of the array is enhanced because the individual foursquare elements are small as compared to conventional array element having comparable frequency response. The small size allows for closer spacing of the individual elements which facilitates scanning. Bandwidths of 1.5:1 or better may be obtained with a feed point impedance of 50 Ohms. Good performance is obtained with the foursquare element having a size of 0.36 .lambda.. Also the foursquare element impedance degrades gradually.
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherUnited States Patent and Trademark Office
dc.titleFoursquare antenna radiating element
dc.typePatent
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/37/261/059/0.pdf
dc.date.accessed2016-08-19
dc.type.dcmitypeText
dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.
dc.contributor.inventorNealy, J. Randall
dc.date.filed1997-06-30
dc.identifier.applicationnumber8885837
dc.subject.uspc343/700.MS
dc.subject.uspcother343/853
dc.subject.uspcother343/872
dc.subject.uspcother343/873
dc.subject.cpcH01Q9/045
dc.subject.cpcH01Q9/0407
dc.subject.cpcH01Q21/24
dc.subject.cpcH01Q21/245
dc.type.patenttypeutility
dc.identifier.patentnumber5926137


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