(A) low-power in-pixel TRX ASIC for miniaturized 3D ultrasound system초소형 3D 초음파 시스템을 위한 저전력 픽셀단위 송수신기 ASIC

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dc.contributor.advisorYoo, Hoi-Jun-
dc.contributor.advisor유회준-
dc.contributor.authorLee, Jihee-
dc.date.accessioned2021-05-12T19:45:41Z-
dc.date.available2021-05-12T19:45:41Z-
dc.date.issued2020-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=924544&flag=dissertationen_US
dc.identifier.urihttp://hdl.handle.net/10203/284456-
dc.description학위논문(박사) - 한국과학기술원 : 전기및전자공학부, 2020.8,[v, 70 p. :]-
dc.description.abstractWe present an area- and power-efficient application-specific integrated circuit (ASIC) for a miniaturized 3-D ultrasound system. The ASIC is designed to transmit pulse and receive echo through a 36-Ch. 2-D piezoelectric Micromachined Ultrasound Transducer (pMUT) array. The 36 Ch. ASIC integrates a transmitter (TX), a receiver (RX), and an analog-to-digital converter (ADC) within the $250-\mu m$ pitch channel while consuming low-power and supporting calibration to compensate for the process variation of the pMUT. The Charge-Recycling High-Voltage TX (CRHV-TX) in standard CMOS generates up to 13.2 $V_{PP}$ pulse while reducing 42.2% peak TX power consumption. Also, each CRHV-TX automatically calibrates excitation voltage according to its acoustic pressure. The dynamic-bit shared ADC (DBS-ADC) shares most-significant-bits (MSBs) among 4 channels based on the signal similarity between adjacent channels. The analog front-end (AFE) with a received signal sensitivity indicator (RSSI) changes its gain adaptively in real-time depending on input signal strength. The entire ASIC consumes 1.14mW/Ch. average power, reduced by 24.9%, with 1-kHz PRF and 3 TX pulses per cycle. The ASIC in $0.18 \mu m$ 1P6M Standard CMOS has been verified with both electrical and acoustic experiments with $a 6 \times 6$ pMUT array.-
dc.languageeng-
dc.publisher한국과학기술원-
dc.subjectAnalog-to-digital converter (ADC)▼aapplication-specific integrated circuit (ASIC)▼abiomedical electronics▼acalibration-
dc.subjectin-probe digitization▼alow-power▼apiezoelectric micromachined ultrasound transducer (pMUT)▼aultrasound imaging▼aultrasonic imaging-
dc.subject아날로그-디지털 변환회로▼a주문형 반도체▼a의생명 전자공학▼a교정▼a디지털 변환▼a저전력▼a압전 박막 기반 초음파 트랜스듀서▼a초음파 이미징-
dc.title(A) low-power in-pixel TRX ASIC for miniaturized 3D ultrasound system-
dc.title.alternative초소형 3D 초음파 시스템을 위한 저전력 픽셀단위 송수신기 ASIC-
dc.typeThesis(Ph.D)-
dc.identifier.CNRN325007-
dc.description.department한국과학기술원 :전기및전자공학부,-
dc.contributor.alternativeauthor이지희-
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