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:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1082130
- Patent Number(s):
- 8339219
- Application Number:
- 12/777,355
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
G - PHYSICS G01 - MEASURING G01K - MEASURING TEMPERATURE
- 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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