{"id":690,"date":"2010-06-25T11:20:50","date_gmt":"2010-06-25T15:20:50","guid":{"rendered":"https:\/\/wpmu2.mit.local\/?p=690"},"modified":"2010-06-25T11:20:50","modified_gmt":"2010-06-25T15:20:50","slug":"front-end-design-for-portable-ultrasound-systems","status":"publish","type":"post","link":"https:\/\/wpmu2.mit.local\/front-end-design-for-portable-ultrasound-systems\/","title":{"rendered":"Front-end Design for Portable Ultrasound Systems"},"content":{"rendered":"
Most current ultrasound imaging systems use piezoelectric materials for the ultrasound transducer. The recent development of micro-electromechanical systems (MEMS) allowed fabrication of capacitive micromachined ultrasound transducers (CMUTs). \u00a0A CMUT is a micromachined capacitor whose value changes according to the DC bias voltage or external pressure due to the physical deformation of the top plate by electrostatic force or external pressure. The major advantages of this transducer technology are the potential for integration with supporting electronic circuits, ease of fabrication, higher resolution due to small transducer size, and improved bandwidth and sensitivity [1<\/a>]<\/sup>.<\/p>\n