This paper presents the design, simulation, and preliminary measurement of a passive (battery-free) frequency doubling antenna sensor for strain sensing. Illuminated by a wireless reader, the sensor consists of three components, i.e. a receiving antenna with resonance frequency f0, a transmitting antenna with resonance frequency 2f0, and a matching network between the receiving and transmitting antennas. A Schottky diode is integrated in the matching network. Exploiting nonlinear circuit behavior of the diode, the matching network is able to generate output signal at doubled frequency of the reader interrogation signal. The output signal is then backscattered to the reader through the sensor-side transmitting antenna. Because the backscattered signal has a doubled frequency, it is easily distinguished by the reader from environmental reflections of original interrogation signal. When one of the sensor-side antennas, say receiving antenna, is bonded to a structure that experiences strain/deformation, resonance frequency of the antenna shifts accordingly. Through wireless interrogation, this resonance frequency shift can be measured by the reader and used to derive strain in the structure. Since operation power of the diode is harvested from the reader interrogation signal, no other power source is needed by the sensor. This means the frequency doubling antenna sensor is wireless and passive. Based on simulation results, strain sensitivity of this novel frequency doubling antenna sensor is around −3.84 kHz/με.
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ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 19–21, 2012
Stone Mountain, Georgia, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4509-7
PROCEEDINGS PAPER
Passive Frequency Doubling Antenna Sensor for Wireless Strain Sensing Available to Purchase
Xiaohua Yi,
Xiaohua Yi
Georgia Institute of Technology, Atlanta, GA
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Chunhee Cho,
Chunhee Cho
Georgia Institute of Technology, Atlanta, GA
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Yang Wang,
Yang Wang
Georgia Institute of Technology, Atlanta, GA
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Benjamin S. Cook,
Benjamin S. Cook
Georgia Institute of Technology, Atlanta, GA
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James Cooper,
James Cooper
Georgia Institute of Technology, Atlanta, GA
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Rushi Vyas,
Rushi Vyas
Georgia Institute of Technology, Atlanta, GA
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Manos M. Tentzeris,
Manos M. Tentzeris
Georgia Institute of Technology, Atlanta, GA
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Roberto T. Leon
Roberto T. Leon
Virginia Polytechnic Institute and State University, Blacksburg, VA
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Xiaohua Yi
Georgia Institute of Technology, Atlanta, GA
Chunhee Cho
Georgia Institute of Technology, Atlanta, GA
Yang Wang
Georgia Institute of Technology, Atlanta, GA
Benjamin S. Cook
Georgia Institute of Technology, Atlanta, GA
James Cooper
Georgia Institute of Technology, Atlanta, GA
Rushi Vyas
Georgia Institute of Technology, Atlanta, GA
Manos M. Tentzeris
Georgia Institute of Technology, Atlanta, GA
Roberto T. Leon
Virginia Polytechnic Institute and State University, Blacksburg, VA
Paper No:
SMASIS2012-7923, pp. 625-632; 8 pages
Published Online:
July 24, 2013
Citation
Yi, X, Cho, C, Wang, Y, Cook, BS, Cooper, J, Vyas, R, Tentzeris, MM, & Leon, RT. "Passive Frequency Doubling Antenna Sensor for Wireless Strain Sensing." Proceedings of the ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Structural Health Monitoring. Stone Mountain, Georgia, USA. September 19–21, 2012. pp. 625-632. ASME. https://doi.org/10.1115/SMASIS2012-7923
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