Pixel Variation Characteristics of a Global Shutter THz Imager and its Calibration Technique

Kanazawa, Yuri; Ambalathankandy, Prasoon; Ikebe, Masayuki

IEICE transactions on fundamentals of electronics communications and computer sciences, 2023, E106A(5), 832-839

Permalink : https://hdl.handle.net/2115/90160

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論文情報

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アクセス権
open access
URI
https://hdl.handle.net/2115/90160
タイトル
Pixel Variation Characteristics of a Global Shutter THz Imager and its Calibration Technique
著者
Kanazawa, Yuri ; Ambalathankandy, Prasoon ; Ikebe, Masayuki
著者名
Kanazawa, Yuri
著者名
Ambalathankandy, Prasoon
e-Rad_Researcher
20374613
著者名
Ikebe, Masayuki
言語
英語
キーワード
terahertz
THz
CMOS imager
variation compensation
発行日
2023-05
出版者
IEICE - Institute of the Electronics, Information and Communication Engineers
収録物名
IEICE transactions on fundamentals of electronics communications and computer sciences
巻(号)
E106A(5)
ページ
832-839
抄録
We have developed a Si-CMOS terahertz image sensor to address the paucity of low-cost terahertz detectors. Our imaging pixel directly connects to a VCO-based ADC and achieves pixel parallel ADC architecture for high-speed global shutter THz imaging. In this paper, we propose a digital calibration technique for offset and gain variation of each pixel using global shutter operation. The calibration technique gives ref-erence signal to all pixels simultaneously and takes reference frames as a part of the high-speed image captures. Using this technique, we achieve offset/non-linear gain variation suppression of 85.7% compared to without correction.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
権利情報
copyright©2023 IEICE
PISSN
0916-8508
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.1587/transfun.2022GCP0004