Journal
JOURNAL OF APPLIED PHYSICS
Volume 111, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3678439
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Passive and remote sensing technology has many potential applications in implantable devices, automation, or structural monitoring. In this paper, a tri-layer thin film giant magnetoimpedance (GMI) sensor with the maximum sensitivity of 16%/Oe and GMI ratio of 44% was combined with a two-port surface acoustic wave (SAW) transponder on a common substrate using standard microfabrication technology resulting in a fully integrated sensor for passive and remote operation. The implementation of the two devices has been optimized by on-chip matching circuits. The measurement results clearly show a magnetic field response at the input port of the SAW transponder that reflects the impedance change of the GMI sensor. (C) 2012 American Institute of Physics. [doi:10.1063/1.3678439]
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