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Pixel Variation Characteristics of a Global Shutter THz Imager and its Calibration Technique
| Title: | Pixel Variation Characteristics of a Global Shutter THz Imager and its Calibration Technique |
| Authors: | Kanazawa, Yuri Browse this author | | Ambalathankandy, Prasoon Browse this author | | Ikebe, Masayuki Browse this author →KAKEN DB |
| Keywords: | terahertz | | THz | | CMOS imager | | variation compensation |
| Issue Date: | May-2023 |
| Publisher: | IEICE - Institute of the Electronics, Information and Communication Engineers |
| Journal Title: | IEICE transactions on fundamentals of electronics communications and computer sciences |
| Volume: | E106A |
| Issue: | 5 |
| Start Page: | 832 |
| End Page: | 839 |
| Publisher DOI: | 10.1587/transfun.2022GCP0004 |
| Abstract: | 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. |
| Rights: | copyright©2023 IEICE |
| Type: | article |
| URI: | http://hdl.handle.net/2115/90160 |
| Appears in Collections: | 量子集積エレクトロニクス研究センター (Research Center for Integrated Quantum Electronics) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 池辺 将之
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