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    An integrated ultrasound transducer driver for HIFU applications

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    WongW2013m-1b.pdf (2.526Mb)

    Date

    2014-01-22

    Author

    Wong, Wai

    Degree

    M.Sc.

    Discipline

    Engineering : Electrical & Computer

    Subject

    Ultrasound transducer
    Amplifier topologies
    High intensity focused ultrasound (HIFU)

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    Abstract

    This thesis proposes an MRI-compatible integrated CMOS ampli er that is capable of di- rectly driving an ultrasound transducer for HIFU applications. The output stage of the integrated amplifier operates in class DE mode with its output directly connected to a shunt capacitor and an ultrasound transducer without the need for an inductor. This design was simulated with Spectre simulator using the 0:8 m 5/20 V CMOS process data available from Teledyne-DALSA Semiconductor. The proposed integrated ampli er has an e ciency of 80% with 1 W of output power at 1 MHz and achieves an acceptable level of third harmonic. A layout of the integrated ampli er was prepared. The integrated ampli er occupies a die area of approximately 2:5 mm by 1:6 mm including input-output pads.

    URI

    http://knowledgecommons.lakeheadu.ca/handle/2453/536

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