Browsing by Author "Kassem, Abdallah"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Pipelined sampled-delay focusing CMOS implementation for ultrasonic digital beamforming
    (IEEE, 2003) Kassem, Abdallah; Wang, J.; Khouas, Abdelhakim; Boukadoum, Mounir
    The real-time ultrasonic imaging system can be achieved using a digital beamforming (DBF) method. The critical part of the DBF is the real-time sampled-delay focusing (SDF) which requires a large number of memories (FIFO) to store the scanned information. The sampled-delay focusing technique is used to eliminate the use of the analog delay lines. This paper concerns the design and implementation of a pipelined sampled-delay architecture for ultrasonic digital beamforming. The design uses a minimum size look-up memory to store the initial scan information as opposed to previous approaches. The circuit is implemented in CMOS 0.18􀁐m technology and the resulting active layout area is 0.14 mm2, while its total power consumption is below 40 mW
  • No Thumbnail Available
    Item
    Variable delay CMOS implementation for ultrasonic beamforming
    (IEEE, 2003) Kassem, Abdallah; Wang, J.; Khouas, Abdelhakim; Boukadoum, Mounir
    An ultrasound imaging systems require high resolution and real-time processing. The real-time imaging can be achieved using a digital beamforming (DBF) method. One of the main important parts of the DBF is the real-time delay calculation. The design and implementation of a pipelined architecture for the beamforming delay calculation is addressed. The design uses a minimum size look-up memory to store the initial scan information as opposed to previous approaches. The circuit is implemented in CMOS 0.18μm technology and the resulting layout area is 0.5 mm2, while a total power consumption of 20 mW