LOW-PROFILE WIRELESS PASSIVE RESONATORS FOR SENSING

摘要

A resonator for sensing a physical or an environmental parameter includes a support having a top surface that provides a ground plane, and a polymer-derived ceramic (PDC) element positioned on the top surface including a PDC layer, and a metal patch on the PDC layer. The metal patch is electrically isolated from all surrounding structure, and the resonator has a resonant frequency that changes as a function of the physical or environmental parameter. A system for wirelessly sensing a physical or environmental parameter includes at least one resonator and a wireless RF reader located remotely from the resonator for transmitting a wide-band RF interrogation signal that excites the resonator. The wireless RF reader detects a sensing signal retransmitted by the resonator and includes a processor for determining the physical or environmental parameter at the location of the resonator from the sensing signal.

主权项

1. A resonator for sensing a physical or an environmental parameter, comprising:
a support having a top surface that provides a ground plane, and a polymer-derived ceramic (PDC) element positioned on said top surface including: a PDC layer, and a metal patch on said PDC layer; wherein said metal patch is electrically isolated from all surrounding structures, and wherein said resonator has a resonant frequency that changes as a function of said physical or said environmental parameter.