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Low-loss RF coupler for testing a cellular telephone

  • US 5,394,162 A
  • Filed: 03/18/1993
  • Issued: 02/28/1995
  • Est. Priority Date: 03/18/1993
  • Status: Expired due to Fees
First Claim
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1. A low-loss RF coupling device for coupling testing equipment to a conductive antenna mount comprising:

  • a base having a first planar surface and a beyond planar surface, said base having a hole extending through both said first planar surface and said second planar surface, said hole having an interior surface for receiving said conductive antenna mount, and said hole having an elongated shape with a top portion and a bottom portion, said top portion having a width less than said bottom portion;

    a first conductive ground plane extending over said first planar surface;

    a contact disposed within said top portion and on said interior surface for electrically connecting to said conductive antenna mount, said contact being electrically isolated from said ground plane; and

    a pair of transmission lines, one transmission line being electrically connected from said contact to said test equipment and the other transmission line electrically connected from said first ground plane to said test equipment.

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