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Soil electrical resistivity is an important parameter in grounding system design. In this paper, laboratory measurements of soil electrical resistivity are carried out using a soil box. Two measurement methods are used and compared, namely, a two-electrode method and a four-electrode method. The measurements indicate that the results reported by the two-electrode method are affected by the contact...
This paper presents a low power and high gain limiting amplifier for Gbps wireless communication system in 0.18μm CMOS technology. It incorporates negative active inductor, negative resistance and negative capacitance to boost gain and bandwidth. Drawing 2.8mA from 1.8V supply, the limiting amplifier achieves 1.25Gbps data rate and 52dB differential gain. The chip is fully integrated, which occupies...
The Yangtze River Bridge studied in this paper is a three-tower steel concrete structure cable stayed bridge with two sides steel cable, composite girder cable stayed bridge and the largest span between towers in the world. The lightning density at the bridge site is much higher than the average value of Wuhan city, so it is important to access the lightning safety. This paper analyzes the lightning...
This article combines theoretical calculation and ATP-EMTP simulation to design the 10/350μs Crowbar impulse current circuit. Parameters that affect peak value and tail time of the 10/350μs current are obtained. Methods to determine the best main circuit parameters are also concerned. with the increase of the main capacitance, the current peak value and the front time also increases; with the increase...
This article combines theoretical calculation and ATP-EMTP simulation to design the 10/350µs Crowbar impulse current circuit. Parameters that affect peak value and tail time of the 10/350µs current are obtained. Methods to determine the best main circuit parameters are also concerned. Moreover, the Crowbar pulse ignition circuit which can generate two channels of ignition signals at the same time...
An implementation method of cellular neural networks (CNN) based on a novel complimentary metal-oxide-semiconductor (CMOS) and single electron transistor (SET) hybrid structure named SETMOS, is proposed in this paper. The main building blocks including cell core circuit, feedback template and control template circuits are designed by the characteristic of negative differential resistance (NDR) of...
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