×

Passive wireless sensors

  • US 9,712,894 B2
  • Filed: 04/29/2014
  • Issued: 07/18/2017
  • Est. Priority Date: 04/29/2014
  • Status: Active Grant
First Claim
Patent Images

1. A passive wireless sensor, comprising:

  • a plurality of dielectric layers;

    an antenna disposed in at least a portion of a cavity formed by one or more dielectric layers of the plurality of dielectric layers;

    a diaphragm disposed on the cavity such that the diaphragm is physically separated from the antenna; and

    a feeding element disposed in at least a portion of one of the plurality of dielectric layers between the antenna and a reference layer, thereby forming a capacitive coupling between the antenna and the reference layer,wherein the diaphragm, the antenna and the reference layer form an electronic circuit such that antenna senses a change in an operating condition of the sensor and transmits a response signal representative of the change in the operating condition of the sensor.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×