Transmitting Performance Evaluation of ASICs for CMUT-Based Portable Ultrasound Scanners

Pere Llimos Muntal, Søren Elmin Diederichsen, Ivan Harald Holger Jørgensen, Jørgen Arendt Jensen, Erik Vilain Thomsen

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Portable ultrasound scanners (PUS) have, in recent years, raised a lot of attention, as they can potentially overcome some of the limitations of static scanners. However, PUS have a lot of design limitations including size and power consumption. These restrictions can compromise the image quality of the scanner. In order to overcome these restrictions, application specific integrated circuits (ASICs) are needed to implement the electronics. In this work, a comparative study of the transmitting performance of a capacitive micromachined ultrasonic transducer (CMUT) driven by a commercial generic ultrasound transmitter and an ASIC optimized for CMUT-based PUS is presented. A single CMUT element is pulsed with a 1% dutycycle at a frequency of 5 MHz. The DC bias voltage is 80 V and the pulsing voltage is 20 V. The acoustic performance is assessed by comparing the ultrasonic signals measured with a hydrophone both in the time and frequency domains. The difference in normalized signal amplitude evaluated at the center frequency of the CMUT is −1.9 dB and the measured bandwidth is equivalent. The ASIC consumes only 1.3% of the total power consumption used by the commercial transmitter.
Original languageEnglish
Title of host publicationProceedings of 2017 IEEE International Ultrasonics Symposium (IUS)
Number of pages4
Publication date2017
ISBN (Print)9781538633823
Publication statusPublished - 2017
Event2017 IEEE International Ultrasonics Symposium - Omni Shoreham Hotel, Washington D. C., United States
Duration: 6 Sep 20179 Sep 2017


Conference2017 IEEE International Ultrasonics Symposium
LocationOmni Shoreham Hotel
Country/TerritoryUnited States
CityWashington D. C.
Internet address


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