DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Yoo, Hoi-Jun | - |
dc.contributor.advisor | 유회준 | - |
dc.contributor.author | Lee, Jihee | - |
dc.date.accessioned | 2021-05-12T19:45:41Z | - |
dc.date.available | 2021-05-12T19:45:41Z | - |
dc.date.issued | 2020 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=924544&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/284456 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 전기및전자공학부, 2020.8,[v, 70 p. :] | - |
dc.description.abstract | We 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.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Analog-to-digital converter (ADC)▼aapplication-specific integrated circuit (ASIC)▼abiomedical electronics▼acalibration | - |
dc.subject | in-probe digitization▼alow-power▼apiezoelectric micromachined ultrasound transducer (pMUT)▼aultrasound imaging▼aultrasonic imaging | - |
dc.subject | 아날로그-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.alternative | 초소형 3D 초음파 시스템을 위한 저전력 픽셀단위 송수신기 ASIC | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :전기및전자공학부, | - |
dc.contributor.alternativeauthor | 이지희 | - |
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