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In this paper, a novel circuit for clock synchronization utilizing an interleaved delay line for coarse tuning and a phase interpolation component for fine tuning is proposed. The interleaved delay line improves the precision to nearly half of conventional SMD and roughly aligns the output clock in two cycles. The rest phase error is compensated by the fine tuning component with binary search scheme...
A composite electromagnetic absorber for anechoic chambers is proposed with the structure consisting of a pyramidal foam and a lossy frequency selective surface (FSS) structure. Simulation results show that the period of absorber array and the pyramid base impact directly on absorption nulls, and the effects of pattern size, surface impedance and substrate thickness of FSS are more complicated due...
A photovoltaic (PV) system consists of many solar panels, which are connected in series, parallel or a combination of both. Energy production for the PV system with various configurations is different. In this paper, a methodology is developed to evaluate and analyze the expected energy production of the PV system for feasible configurations.
Vein pattern is used as biometric feature in recent 20 years and It attracts much attention from 2000. A complete vein pattern recognition system contains three key procedures, vein image collection, vein pattern segment and feature extraction. In this paper, we adopt low-cost collection devices and discuss all the three parts in details. First a novel image collection way is proposed, which could...
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