Title

Wirelessly Sensing Resonant Frequency Of Passive Resonators With Different Q Factors

Keywords

Patch antennas; resonator; wireless sensing; wireless temperature sensors

Abstract

This paper presents a method of wirelessly sensing the resonant frequency of passive resonators using modulated waveforms. A pulse signal with a relatively wide frequency spectrum is transmitted towards a passive resonator, which in turn, reflects energy back to the interrogator. After time-domain gating and processing, the resonant frequency of the passive resonator can be wireless detected. This technique can be used for developing high-temperature sensors within harsh environments where only passive devices, made of high-temperature-stable materials, can survive. Resonators with different Q factors are studied herein on the effect of wireless sensing distance. A wireless sensing system up to 20 cm sensing distance has been demonstrated. © 2011 IEEE.

Publication Date

11-1-2011

Publication Title

IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)

Number of Pages

1143-1146

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/APS.2011.5996485

Socpus ID

80054997511 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/80054997511

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