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Collapsible single or multielement rhombic antennas

  • US 5,657,030 A
  • Filed: 06/05/1995
  • Issued: 08/12/1997
  • Est. Priority Date: 09/14/1993
  • Status: Expired due to Fees
First Claim
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1. A collapsible rhombic antenna for receiving and transmitting horizontally or vertically polarized electromagnetic waves, comprising:

  • two parallel rhombic antenna elements including a first conductive wire defining a first half of each rhombic element and a second conductive wire defining a second half of each rhombic element;

    an antenna frame for supporting said rhombic elements including a first pair of nonconductive coaxial legs extending radially outwardly from a center support, a second pair of nonconductive coaxial legs extending radially outwardly from said center support and orthogonally to said first pair of legs, and four nonconductive cross arm supports orthogonally mounted to an outwardly extending end of each leg for upholding each element in its rhomboid shape;

    means for detachably engaging at least one of said legs to said center support;

    a termination resistance disposed in an environmentally protected opening formed within the cross arm support upholding each end of said first and second wires, said resistance having a first terminal and a second terminal, said first wire being connected to the first terminal of said resistance, said second wire being connected to the second terminal of said resistance;

    an integrated feed network for controlling the bandwidth of the antenna disposed in an environmentally protected opening formed within the cross arm support upholding the midpoints of both said first and second wires; and

    a translation device coupled to said first and second wires for detecting, amplifying and converting the electromagnetic waves into a desired output signal.

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