DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Lee, Hee Chul | - |
dc.contributor.advisor | 이희철 | - |
dc.contributor.author | Cho, Min Ji | - |
dc.date.accessioned | 2021-05-12T19:41:33Z | - |
dc.date.available | 2021-05-12T19:41:33Z | - |
dc.date.issued | 2020 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=909493&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/284235 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 전기및전자공학부, 2020.2,[vi, 69 p. :] | - |
dc.description.abstract | In this thesis, research into read-in integrated circuits (RIICs) for infrared scene projectors (IRSPs) is described. In particular, unlike conventional RIICs, mode-selective RIICs are proposed to simultaneously satisfy the need for wide thermal range and fine thermal resolution. First, a novel RIIC containing switches, a feedback resistor and a diode-connected transistor is proposed. With switch control, a pixel can operate in three modes. The feedback resistor and diode-connected transistor in each pixel help to generate a dual-sloped input to output curve for fine resolution around 300K. The prototype was fabricated using the TSMC 0.35 $\mu$m CMOS process, and it was verified that the IR emitter driven by the proposed circuit could generate upto 745 K with < 30mK resolution around 300 K. Second, to guarantee data-sampling accuracy with high spatial resolution and high-speed operation, a column DAC design is proposed and a piece-wise linear DAC structure was adopted. The prototype was fabricated using the On-semiconductor 0.18 $\mu$m CMOS process, and from the measured data analysis, it was verified that the chip design could operate at the target speed. Its monotonicity was also confirmed by varying the 12-bit digital input. Third, to improve pixel-to-pixel uniformity, a new current-driven RIIC pixel is proposed. In particular, the proposed pixel can operate in snapshot mode, which enables it to emit radiation in array simultaneously for high-speed IR scene operation, without the need for a unity-gain buffer. The prototype was designed with the SK-Hynix 0.18 $\mu$m CMOS process. The nonuniformity immunity was tested taking account of the mismatch properties, and it was verified that the emitter current variation could be reduced from 20 $\mu$A to 0.1 $\mu$A. It was also confirmed that the uniformity, being the standard deviation of the radiance divided by the average radiance, could be reduced from 21% to 0.1%. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Infrared scene projector▼aRead in IC▼amode-selective operation▼asnapshot operation▼aIR emitter | - |
dc.subject | 적외선 영상 투사기▼a신호입력회로▼a모드 선택적 구동▼a스냅샷 동작▼a적외선 이미터 | - |
dc.title | Triple-mode read-in IC for improved image quality of infrared scene projectors | - |
dc.title.alternative | 적외선 영상 투사기의 이미지 개선을 위한 세 가지 모드의 선택적 구동이 가능한 신호입력회로 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :전기및전자공학부, | - |
dc.contributor.alternativeauthor | 조민지 | - |
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