Searched for: author%3A%22Ge%2C+X.%22
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document
Ge, X. (author)
In pursuit of achieving the noise condition of single-photon imaging, system-level and circuit-level innovations and optimizations for CMOS image sensor (CIS) noise reduction are called for. Stimulated by this motivation, this thesis focuses on reducing the temporal noise generated in the pixels and the readout electronics.
doctoral thesis 2021
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Verbiest, G.J. (author), Janssen, H. (author), Xu, D. (author), Ge, X. (author), Goldsche, M. (author), Sonntag, J. (author), Khodkov, T. (author), Banszerus, L. (author), Von Den Driesch, N. (author)
We developed an impedance bridge that operates at cryogenic temperatures (down to 60 mK) and in perpendicular magnetic fields up to at least 12 T. This is achieved by mounting a GaAs HEMT amplifier perpendicular to a printed circuit board containing the device under test and thereby parallel to the magnetic field. The measured amplitude and...
journal article 2019
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Ge, X. (author), Theuwissen, A.J.P.A.M. (author)
This paper presents a temporal noise analysis of charge-domain sampling readout circuits for Complementary Metal-Oxide Semiconductor (CMOS) image sensors. In order to address the trade-off between the low input-referred noise and high dynamic range, a Gm-cell-based pixel together with a charge-domain correlated-double sampling (CDS) technique...
journal article 2018
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Ge, X. (author), Theuwissen, A.J.P.A.M. (author)
A deep subelectron temporal noise CMOS image sensor (CIS) with a Gm-cell based pixel and a correlated-double charge-domain sampling technique has been developed for photon-starved imaging applications. With the proposed technique, the CIS, which is implemented in a standard 0.18-μm CIS process, features pixel-level amplification and achieves an...
journal article 2017
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Ge, X. (author)
Air pollution has become one of the most serious problems societies worldwide are facing, thus there is an emergent need for air quality monitoring to quantify pollution level and supervise pollution sources. One of the main pollutants, nitrogen dioxide, mostly comes from human activities such as the burning of fossil fuels, vehicle exhaust and...
master thesis 2016
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Xu, Y. (author), Ge, X. (author), Theuwissen, A.J.P. (author)
In a 4T pixel, the transfer gate (TG) “OFF” surface potential is one of the important parameters, which determines the pinned photodiode (PPD) full well capacity. The feed-forward effect measurement is a powerful tool to characterize the relationship of the PPD injection potential and the feed-forward electrons. In this paper, a parameter Vb is...
conference paper 2015
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Ge, X. (author)
The goal of this work described in this thesis is to design a CMOS image sensor chip, implementing pixels with a 4.8?m pitch with a peripheral readout circuitry in a 110nm CMOS process. The architecture of the CMOS image sensor is presented, with a functional illustration for every block. The 8T global shutter pixel noise, circuit and layout are...
master thesis 2012
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Ge, X. (author), Wang, H. (author)
Many networks are characterized by the presence of communities, densely intra-connected groups with sparser inter-connections between groups. We propose a community overlay network representation to capture large-scale properties of communities. A community overlay Go can be constructed upon a network G, called the underlying network, by (a)...
journal article 2012
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Van Mieghem, P.F.A. (author), Ge, X. (author), Schumm, P. (author), Trajanovski, S. (author), Wang, H. (author)
Expressions and bounds for Newman’s modularity are presented. These results reveal conditions for or properties of the maximum modularity of a network. The influence of the spectrum of the modularity matrix on the maximum modularity is discussed. The second part of the paper investigates how the maximum modularity, the number of clusters, and...
journal article 2010
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Van Mieghem, P. (author), Wang, H. (author), Ge, X. (author), Tang, S. (author), Kuipers, F.A. (author)
Newman’s measure for (dis)assortativity, the linear degree correlation coefficient ?D, is reformulated in terms of the total number Nk of walks in the graph with k hops. This reformulation allows us to derive a new formula from which a degree-preserving rewiring algorithm is deduced, that, in each rewiring step, either increases or decreases ?D...
journal article 2010
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Van Mieghem, P.F.A. (author), Wang, H. (author), Ge, X (author), Tang, S. (author), Kuipers, F.A. (author)
journal article 2010
Searched for: author%3A%22Ge%2C+X.%22
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