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Reducing coupling of RF interrogated SAWs to external bodies

  • US 7,224,100 B2
  • Filed: 06/04/2004
  • Issued: 05/29/2007
  • Est. Priority Date: 06/04/2004
  • Status: Expired due to Fees
First Claim
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1. A method of reducing coupling of radio frequency (RF) interrogated surface acoustic wave (SAW) based sensors to external bodies, comprising the steps of:

  • providing a surface acoustic wave sensor element, said surface acoustic wave sensor element having first and second electrical terminals;

    providing an electrically conductive housing;

    providing a feed through electrical connection pin having first and second end portions, the second end portion passing through a portion of the electrically conductive housing;

    providing electrical isolation between the feed through electrical connection pin and the electrically conductive housing;

    connecting the second end portion of the feed through electrical connection pin to the first electrical terminal of the surface acoustic wave sensor element;

    connecting the second electrical terminal of the surface acoustic wave sensor element to the electrically conductive housing;

    providing an antenna element having first and second end portions; and

    connecting the first end portion of the antenna element to the first end portion of the feed through electrical connection pin.

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