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This paper reports on the proof-of-concept demonstration of an approach for the synthesis of a through package charging and authenticating communication link enabled by GHz-range aluminum nitride (AlN) piezoelectric transducers. The acoustic link is formed by two thickness-mode acoustic transducers placed on the two sides of a packaging substrate. The link leverages the enhancement of energy transfer...
This work presents preliminary results on vicinity-based power transfer using MHz-range ultrasonic transducers. In principle, bulk acoustic waves (BAW) launched by a commercial ultrasonic probe are absorbed by a flexural mode transducer and converted to an electrical signal through direct piezoelectric effect. The proposed link leverages the enhancement of energy transfer at resonance and is empowered...
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