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Antenna apparatus and communication apparatus using the antenna apparatus

  • US 6,172,646 B1
  • Filed: 10/04/1999
  • Issued: 01/09/2001
  • Est. Priority Date: 03/15/1999
  • Status: Expired due to Term
First Claim
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1. An antenna apparatus comprising:

  • a strip-shaped radiation electrode having one open end and one grounded end;

    a surface-mount antenna comprising a feeding electrode isolated from said radiation electrode; and

    a monopole antenna disposed in the vicinity of said surface-mount antenna;

    the radiation electrode, the surface-mount antenna, and the monopole antenna being provided on a surface of a base comprising an insulator;

    said surface-mount antenna and said monopole antenna being fed from a single feeding point, and being arranged so that an image current of current flowing to said surface-mount antenna flows to said monopole antenna, and an image current of current flowing to said monopole antenna flows to said surface-mount antenna.

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