Ziqi Song

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Kohonen's self-organizing maps (KSOM) can generate mappings from high-dimensional signal spaces to lower dimensional topological structures. The main features of this kind of mappings are formation of topology preserving, feature mappings and probability distribution approximation of input patterns. However, KSOM have some limitations, e.g., a fixed number(More)
This paper introduced an 8-bit current steering CMOS digital-to-analog converter (DAC). With optimized circuit matching technique, the working frequency band varies from 10MHz to 200MHz with a spurious-free dynamic range (SFDR) attenuating from 61dB to 40dB. The measurement results of the differential nonlinearity and integral nonlinearity is 0.16LSB and(More)
The Washington State Department of Transportation (WSDOT) is responsible for planning, operating, and maintaining a highway network consisting of over 18,500 lane-miles of highway. Planning and building highways is, by nature, a long-range enterprise. It requires making many assumptions about future travel demand as well as estimating future fuel tax(More)
10bit column-parallel integrating ADCs intended for infrared image sensor are presented in this paper. The column scale is 160 and the width of each column cell is 32µm. The ADCs introduce a proposed architecture to eliminate offset error and a novel circuit structure to substrate background signal. A prototype ADCs is designed in 0.35µm CMOS(More)
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