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Broadband patch/slot antenna

  • US 6,198,437 B1
  • Filed: 07/08/1999
  • Issued: 03/06/2001
  • Est. Priority Date: 07/09/1998
  • Status: Expired due to Fees
First Claim
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1. Broadband combination patch and slot coplanar microwave antenna apparatus comprising the combination of:

  • an electrical conductor ground plane member disposed on an electrically insulating planar substrate member;

    said ground plane member including a rectangular shaped electrical conductor aperture having orthogonally disposed shorter and longer aperture sides received in a ground plane interior portion;

    a coplanar rectangularly shaped electrically conductive patch antenna member received in electrical isolation, with smaller and larger pairs of spacings respectively from said longer and said shorter aperture sides, within said ground plane conductor rectangular aperture on said electrically insulating planar substrate member;

    said electrically conductive patch antenna member being characterized by first and second diametrically opposed radiating edge portions, of respective first and second patch antenna electrical resonance frequency characteristics and disposition adjacent respective ground plane conductor shorter aperture sides;

    a first electrical slot resonator inclusive of said first electrically conductive patch antenna member first radiating edge, an adjacent ground plane aperture shorter side conductor and an intervening non-conducting exposed substrate area of said larger patch antenna member to ground plane conductor rectangular aperture spacing, said first electrical slot resonator having a first slot antenna electrical resonance frequency characteristic;

    a second electrical slot resonator inclusive of said second electrically conductive patch antenna member second radiating edge, an adjacent ground plane aperture shorter side conductor and an intervening non-conducting exposed substrate area of said larger patch antenna member to ground plane conductor rectangular aperture spacing, said second electrical slot resonator having a second slot antenna electrical resonance frequency characteristic;

    a transmission line conductor element received within an elongated ground plane void pathway and communicating radio frequency electrical energy among a region peripheral of said ground plane member and said electrically conductive patch antenna member in said rectangular shaped electrical conductor aperture.

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