Print Email Facebook Twitter An Integrated 2D Ultrasound Phased Array Transmitter in CMOS with Pixel Pitch-Matched Beamforming Title An Integrated 2D Ultrasound Phased Array Transmitter in CMOS with Pixel Pitch-Matched Beamforming Author Lopes Marta da Costa, T.M. (TU Delft Bio-Electronics) Shi, Chen (Columbia University) Tien, Kevin (Columbia University) Elloian, Jeffrey (Columbia University) A. Cardoso, Filipe (Columbia University) Shepard, Kenneth (Columbia University) Date 2021 Abstract Emerging non-imaging ultrasound applications, such as ultrasonic wireless power delivery to implantable devices and ultrasound neuromodulation, require wearable form factors, millisecond-range pulse durations and focal spot diameters approaching 100 μm with electronic control of its three-dimensional location. None of these are compatible with typical handheld linear array ultrasound imaging probes. In this work, we present a 4 mm × 5 mm 2D ultrasound phased array transmitter with integrated piezoelectric ultrasound transducers on complementary metal-oxide-semiconductor (CMOS) integrated circuits, featuring pixel-level pitch-matched transmit beamforming circuits which support arbitrary pulse duration. Our direct integration method enabled up to 10 MHz ultrasound arrays in a patch form-factor, leading to focal spot diameter of ∼200 μm, while pixel pitch-matched beamforming allowed for precise three-dimensional positioning of the ultrasound focal spot. Our device has the potential to provide a high-spatial resolution and wearable interface to both powering of highly-miniaturized implantable devices and ultrasound neuromodulation. Subject 2D ultrasound phased-arrayImplantsIntegrated circuitsNeuromodulationPhased arraysphased-array beamformingpiezoelectric ultrasound transducersPZT integrationTransducersTransmittersUltrasonic imagingultrasound neuromodulationultrasound powered implantable devices To reference this document use: http://resolver.tudelft.nl/uuid:36f17f81-3c0d-45ae-86f4-017ee6c3167d DOI https://doi.org/10.1109/TBCAS.2021.3096722 ISSN 1932-4545 Source IEEE Transactions on Biomedical Circuits and Systems, 15 (4), 731-742 Part of collection Institutional Repository Document type journal article Rights © 2021 T.M. Lopes Marta da Costa, Chen Shi, Kevin Tien, Jeffrey Elloian, Filipe A. Cardoso, Kenneth Shepard Files PDF TBIOCAS_UltrasoundPhasedA ... access.pdf 1.68 MB Close viewer /islandora/object/uuid:36f17f81-3c0d-45ae-86f4-017ee6c3167d/datastream/OBJ/view