专利名称：MULTI-FREQUENCY ULTRA WIDE
BANDWIDTH TRANSDUCER
发明人：Arman HAJATI申请号：US13835500申请日：20130315
公开号：US20130294202A1公开日：20131107
专利附图：
摘要：Piezoelectric micromachined ultrasonic transducer (pMUT) arrays and
techniques for frequency shaping in pMUT arrays are described, for example to achieveboth high frequency and low frequency operation in a same device. The ability to operate
at both high and low frequencies may be tuned during use of the device to adaptivelyadjust for optimal resolution at a particular penetration depth of interest. Inembodiments, various sizes of piezoelectric membranes are fabricated for tuningresonance frequency across the membranes. The variously sized piezoelectricmembranes are lumped together by two or more separate electrode rails, enablingindependent addressing between the two or more subgroups of sized transducerelements. Signal processing of the drive and/or response signals generated and/orreceived from each of the two or more electrode rails may achieve a variety of operativemodes for the device, such as a near field mode, a far field mode, and an ultra widebandwidth mode.
申请人：Arman HAJATI
地址：Santa Clara CA US
国籍：US
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