Conference paper
Transmitting Performance Evaluation of ASICs for CMUT-Based Portable Ultrasound Scanners
Department of Electrical Engineering, Technical University of Denmark1
Electronics, Department of Electrical Engineering, Technical University of Denmark2
Department of Micro- and Nanotechnology, Technical University of Denmark3
MEMS-AppliedSensors, Department of Micro- and Nanotechnology, Technical University of Denmark4
Biomedical Engineering, Department of Electrical Engineering, Technical University of Denmark5
Center for Fast Ultrasound Imaging, Centers, Technical University of Denmark6
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.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2017 |
| Pages: | 1-4 |
| Proceedings: | 2017 IEEE International Ultrasonics Symposium |
| ISBN: | 1538633825 , 9781538633823 , 1538633833 , 1538633841 , 9781538633830 and 9781538633847 |
| ISSN: | 19485727 |
| Types: | Conference paper |
| DOI: | 10.1109/ULTSYM.2017.8092913 |
| ORCIDs: | Llimos Muntal, Pere , Diederichsen, Søren Elmin , Jørgensen, Ivan Harald Holger , Jensen, Jørgen Arendt and Thomsen, Erik Vilain |
ASIC Acoustic measurements Acoustics PUS Power demand Transducers Transmitters Ultrasonic imaging Voltage measurement acoustic performance acoustic signal processing application specific integrated circuits capacitive micromachined ultrasonic transducer commercial generic ultrasound transmitter hydrophone portable ultrasound scanners single CMUT element static scanners total power consumption transmitting performance ultrasonic imaging ultrasonic signals ultrasonic transducer arrays
