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    Foursquare antenna radiating element

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    5926137.pdf (640.6Kb)
    Downloads: 110
    Publication Date
    1999-07-20
    Filing Date
    1997-06-30
    Inventor
    Nealy, J. Randall
    Metadata
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    Abstract
    A 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.
    Assignee
    Virginia Tech Intellectual Properties, Inc.
    Patent Number
    5926137
    Application Number
    8885837
    Source URL
    http://pimg-fpiw.uspto.gov/fdd/37/261/059/0.pdf
    Primary/U.S. Class
    343/700.MS
    Other/U.S. Class
    343/853
    343/872
    343/873
    CPC Class
    H01Q9/045
    H01Q9/0407
    H01Q21/24
    H01Q21/245
    Patent Type
    utility
    URI
    http://hdl.handle.net/10919/72394
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    • Virginia Tech Patents [687]

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