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- Title
Design of an Ultrasound Transceiver ASIC with a Switching-Artifact Reduction Technique for 3D Carotid Artery Imaging.
- Authors
Kim, Taehoon; Fool, Fabian; dos Santos, Djalma Simoes; Chang, Zu-Yao; Noothout, Emile; Vos, Hendrik J.; Bosch, Johan G.; Verweij, Martin D.; de Jong, Nico; Pertijs, Michiel A. P.
- Abstract
This paper presents an ultrasound transceiver application-specific integrated circuit (ASIC) directly integrated with an array of 12 × 80 piezoelectric transducer elements to enable next-generation ultrasound probes for 3D carotid artery imaging. The ASIC, implemented in a 0.18 µm high-voltage Bipolar-CMOS-DMOS (HV BCD) process, adopted a programmable switch matrix that allowed selected transducer elements in each row to be connected to a transmit and receive channel of an imaging system. This made the probe operate like an electronically translatable linear array, allowing large-aperture matrix arrays to be interfaced with a manageable number of system channels. This paper presents a second-generation ASIC that employed an improved switch design to minimize clock feedthrough and charge-injection effects of high-voltage metal–oxide–semiconductor field-effect transistors (HV MOSFETs), which in the first-generation ASIC caused parasitic transmissions and associated imaging artifacts. The proposed switch controller, implemented with cascaded non-overlapping clock generators, generated control signals with improved timing to mitigate the effects of these non-idealities. Both simulation results and electrical measurements showed a 20 dB reduction of the switching artifacts. In addition, an acoustic pulse-echo measurement successfully demonstrated a 20 dB reduction of imaging artifacts.
- Subjects
APPLICATION-specific integrated circuits; PIEZOELECTRIC transducers; IMAGING systems; CAROTID artery; FIELD-effect transistors; ACOUSTIC measurements
- Publication
Sensors (14248220), 2021, Vol 21, Issue 1, p150
- ISSN
1424-8220
- Publication type
Letter
- DOI
10.3390/s21010150