This paper presents experiments on a low-frequency wireless power transfer system (WPTS) using a piezoelectric transducer with a magnet tip mass as a receiver. The thin-film piezoelectric bimorph cantilever is fabricated by sol-gel processing with the aim to miniaturize the system for wearable applications. The device couples an applied electromagnetic field to the mechanical transverse vibration of the beam, which then induces a voltage across a load resistance connected to the electrical ports. This coupled mechanism is therefore referred to as the magneto-mechano-electric (MME) effect. A power of 3.4 μW is generated in a resistance of 200 kΩ at a magnetic flux density of 100.3 μT. The potential of utilizing the same piezoelectric resonator for both energy harvesting and wireless power transmission modes is shown.
CITATION STYLE
Truong, B. D., Wang, D., Xue, T., Trolier-Mckinstry, S., & Roundy, S. (2019). Experiments on a wireless power transfer system for wearable device with sol-gel thin-film PZT. In Journal of Physics: Conference Series (Vol. 1407). Institute of Physics Publishing. https://doi.org/10.1088/1742-6596/1407/1/012063
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