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Disk antenna

  • US 6,292,152 B1
  • Filed: 09/29/1998
  • Issued: 09/18/2001
  • Est. Priority Date: 09/29/1998
  • Status: Expired due to Fees
First Claim
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1. A disk antenna comprising:

  • a disk having a generally circular first and second surface and a channel extending through said disk between said first and second surfaces along a longitudinal axis of said disk;

    a radiating element adapted to communicate a data signal through electromagnetic energy disposed on said first disk surface;

    a feed pin having a proximate and a distal end, said proximate end operatively connected to said radiating element and said distal end being free and extending through said channel;

    a capacitor formed from an electrically conductive first plate located along said second disk surface connected in circuit with said feed pin;

    an electrically insulative material overlying said first plate and an electrically conductive second plate overlying said insulative material and said insulative material and said second plate having a bore hole for receiving said feed pin in spaced relation to said second plate;

    wherein said capacitor functions as a tuning element;

    wherein said disk includes a plurality of flanges disposed along the outer perimeter of said second surface adapted to secure said second plate press fittably therebetween; and

    , wherein said second plate is attached to said insulative material and said first plate includes a first portion attached to said disk and a second portion attached to said insulative material, said insulative material and said second portion of said first plate being movable in relation to said disk and said first portion of said first plate.

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