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Detecting moisture with an antenna

  • US 9,939,398 B2
  • Filed: 02/19/2015
  • Issued: 04/10/2018
  • Est. Priority Date: 09/12/2014
  • Status: Expired due to Fees
First Claim
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1. A system for moisture detection, the system comprising:

  • a communication apparatus;

    a housing for the communication apparatus comprising a conductive cover separated by a dielectric, the dielectric separating the conductive cover into a first cover part and a second cover part, wherein the first cover part is a first antenna and the second cover part is a second antenna separated by the dielectric, the first antenna and the second antenna being external to the communication apparatus;

    an impedance sensor configured to detect an impedance at the second antenna based on a received signal received through a wave medium from the first antenna, the wave medium being in and around the communication apparatus; and

    a control circuit configured to detect moisture based on the impedance at the second antenna and transmit a moisture event to a switch that disconnects power to one or more components of the communication apparatus.

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