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Title: Passive hybrid sensing tag with flexible substrate saw device

Abstract

The integration of surface acoustic wave (SAW) filters, microfabricated transmission lines, and sensors onto polymer substrates in order to enable a passive wireless sensor platform is described herein. Incident microwave pulses on an integrated antenna are converted to an acoustic wave via a SAW filter and transmitted to an impedance based sensor, which for this work is a photodiode. Changes in the sensor state induce a corresponding change in the impedance of the sensor resulting in a reflectance profile. Data collected at a calibrated receiver is used to infer the state of the sensor. Based on this principal, light levels were passively and wirelessly demonstrated to be sensed at distances of up to about 12 feet.

Inventors:
; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1082130
Patent Number(s):
8,339,219
Application Number:
12/777,355
Assignee:
Sandia Corporation (Albuquerque, NM)
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Skinner, Jack L., Chu, Eric Y., and Ho, Harvey. Passive hybrid sensing tag with flexible substrate saw device. United States: N. p., 2012. Web.
Skinner, Jack L., Chu, Eric Y., & Ho, Harvey. Passive hybrid sensing tag with flexible substrate saw device. United States.
Skinner, Jack L., Chu, Eric Y., and Ho, Harvey. Tue . "Passive hybrid sensing tag with flexible substrate saw device". United States. https://www.osti.gov/servlets/purl/1082130.
@article{osti_1082130,
title = {Passive hybrid sensing tag with flexible substrate saw device},
author = {Skinner, Jack L. and Chu, Eric Y. and Ho, Harvey},
abstractNote = {The integration of surface acoustic wave (SAW) filters, microfabricated transmission lines, and sensors onto polymer substrates in order to enable a passive wireless sensor platform is described herein. Incident microwave pulses on an integrated antenna are converted to an acoustic wave via a SAW filter and transmitted to an impedance based sensor, which for this work is a photodiode. Changes in the sensor state induce a corresponding change in the impedance of the sensor resulting in a reflectance profile. Data collected at a calibrated receiver is used to infer the state of the sensor. Based on this principal, light levels were passively and wirelessly demonstrated to be sensed at distances of up to about 12 feet.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {12}
}

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