Active beam-forming technique for piezoelectric ultrasonic transducer array
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United States of America Patent
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Jun 12, 2018
Issued Date -
N/A
app pub date -
Oct 14, 2015
filing date -
Oct 15, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
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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International Classification(s)
- H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....
- B06B:GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS I....
- G10K:SOUND-PRODUCING DEVICES
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- G01S:RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMI....
- G06K:RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD ....
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