Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Armin Kemna"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 576:123-127
Aiming at a compact, cost-effective data readout for X-ray CT, a monolithic approach is presented where photosensor and parts of the analog-to-digital converter are located on the same substrate. In a special realization of the ‘digital pixel’, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::696c0a5d78813160674e2c6c3553e3d9
https://doi.org/10.1016/j.nima.2007.01.138
https://doi.org/10.1016/j.nima.2007.01.138
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 568:112-117
In this work, theoretical modeling and simulations of a ‘time compression’ parametric amplification pixel array to be used in CMOS imaging for low-level or near IR radiation are presented. The implementation in the higher resistivity substrate pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b398b70bda4e67ddb40e090032f74c54
https://doi.org/10.1016/j.nima.2006.05.263
https://doi.org/10.1016/j.nima.2006.05.263
Publikováno v:
Advances in Radio Science, Vol 3, Pp 331-336 (2005)
In this paper the noise analysis of a current integrator is carried out and measures to reduce the overall noise are presented. The effects of various noise sources are investigated and their dependence on the input capacitance and on the gate area o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1db869fd8cb11a5c451032d4627e614c
https://doi.org/10.5194/ars-3-331-2005
https://doi.org/10.5194/ars-3-331-2005
Autor:
Gereon Vogtmeier, Michael Gnade, Armin Kemna, Stefan Eick, Christian Bäumer, Roger Steadman, Dirk Weiler
Publikováno v:
2006 Proceedings of the 32nd European Solid-State Circuits Conference.
A multichannel SigmaDelta-type analog-to-digital converter has been designed for data readout in CT scanners. A test-structure with a 4 times 4 photodetector array has been fabricated in a 0.8 mum CMOS process. Aiming at an integrated solution toward
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16f0e05290e6bdae75d0fc4a2215e4da
https://doi.org/10.1109/esscir.2006.307473
https://doi.org/10.1109/esscir.2006.307473
In this paper, we show a high dynamic range current-mode detector for computed tomography application. A regulated current mirror structure has been implemented at pixel level that provides with 17 bits dynamic range and a noise floor below 3 pARMS.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70baab626b9f75bc9328f82480c05b48
https://publica.fraunhofer.de/handle/publica/211191
https://publica.fraunhofer.de/handle/publica/211191
Publikováno v:
Proceedings of the 31st European Solid-State Circuits Conference, 2005. ESSCIRC 2005..
In this work, we show a high dynamic range current-mode detector for computer tomography application. A regulated current mirror structure has been implemented at pixel level that provides with 17 bits dynamic range and a noise floor below 3 pA/sub R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58c6b33e1019926f0db2b47c2344a3a5
https://doi.org/10.1109/esscir.2005.1541648
https://doi.org/10.1109/esscir.2005.1541648
Publikováno v:
Detectors and Associated Signal Processing.
All optoelectronic detectors today are based either on integrating or demodulating readout approaches. In this paper we introduce an optical detector that in-situ combines these two readout methods thus enabling simultaneous demodulation and image ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60cb2b05399344a9de7c2a79a9f2ec61
https://doi.org/10.1117/12.516537
https://doi.org/10.1117/12.516537
Autor:
Werner Brockherde, E. Oezkan, F.M. Serrano, Bedrich Hosticka, G. Vogtmeier, Roger Steadman, Armin Kemna
A CMOS photodetector array with in-pixel electronics has been developed for computed tomography (CT) applications. Current CT detectors are based on two discrete components: a photodiode array and a data acquisition system (amplifier). Both elements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ee64e46151a5ce7217020cdca6d12a6
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=3042701348
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=3042701348
In this paper, a new fully integrated detector architecture for pick-up units in optical storage systems is presented. It features a special high-frequency photodiode constellation for data recovery suitable for the needs of future optical storage sy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5c6ca3090d2500e09aafd4bc1426710
https://publica.fraunhofer.de/handle/publica/205905
https://publica.fraunhofer.de/handle/publica/205905
Autor:
F. Morales, Roger Steadman, Werner Brockherde, Armin Kemna, Bedrich Hosticka, E. Ozkan, G. Vogtmeier
Publikováno v:
ESSCIRC 2004 - 29th European Solid-State Circuits Conference (IEEE Cat. No.03EX705).
A CMOS photodetector array with in-pixel electronics has been developed for computed tomography (CT) applications. Consisting of 10/spl times/20 pixel array in-pixel electronics has been designed to achieve 17 bits dynamic range and a quantum limited
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7e5089e064d25589ae152f4abd6a9d9
https://doi.org/10.1109/esscirc.2003.1257086
https://doi.org/10.1109/esscirc.2003.1257086