Active beam-forming technique for piezoelectric ultrasonic transducer array

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United States of America Patent

PATENT NO 9995821
SERIAL NO

14883585

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Abstract

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An apparatus includes an array of pixels, each pixel including in-cell pixel logic and a piezoelectric micromechanical ultrasonic transducer (PMUT) element, each in-cell pixel logic being communicatively coupled with at least one adjacent pixel in the array. Transceiver electronics may operate the array in a selectable one of a first mode and a second mode. In the first mode, the array may generate a substantially plane ultrasonic wave. In the second mode, the array may generate, from at least one superpixel region, a focused beam of relatively high acoustic pressure, each superpixel region including at least one inner pixel disposed in a central portion of the superpixel region and at least a first group of outer pixels disposed in an outer portion of the superpixel region. The transceiver electronics may be configured to operate the array by configuring at least one in-cell pixel logic.

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Patent Owner(s)

Patent OwnerAddress
QUALCOMM INCORPORATED5775 MOREHOUSE DRIVE SAN DIEGO CA 92121

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lu, Yipeng Davis, US 16 113
Panchawagh, Hrishikesh Vijaykumar San Jose, US 14 119
Tang, Hao-Yen Berkeley, US 19 112

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