National R&D activities on optical switching networkare introduced. Optical switching network testbedswere established in China including 3T-net andOBS ring and mesh network test-bed with the supportof national &#...National R&D activities on optical switching networkare introduced. Optical switching network testbedswere established in China including 3T-net andOBS ring and mesh network test-bed with the supportof national '863' program. As an importantmodule in OPS network, a novel all-optical serialmulticast mode is discussed.展开更多
To design a Double-Pole Four-Throw (DP4T) RF switch, measurement of device parameters is required. In this DP4T RF switch CMOS is a unit cell, so with a thin oxide layer of thickness 628 ? which is measured optically....To design a Double-Pole Four-Throw (DP4T) RF switch, measurement of device parameters is required. In this DP4T RF switch CMOS is a unit cell, so with a thin oxide layer of thickness 628 ? which is measured optically. Some of the material parameters were found by the curve drawn between Capacitance versus Voltage (C-V) and Capacitance versus Frequency (C-F) with the application of Visual Engineering Environment Programming (VEE Pro). To perform the measurement processing at a distance, from the hazardous room, we use VEE Pro software. In this research, to acquire a fine result for RF MOSFET, we vary the voltage with minor increments and perform the measurements by vary the applying voltage from +5 V to –5 V and then back to +5 V again and then save this result in a data sheet with respect to temperature, voltage and frequency using this program. We have investigated the characteristics of RF MOSFET, which will be used for the wireless telecommunication systems.展开更多
电梯轿门门锁装置的检验是保障电梯安全性的重要一环。通过一起电梯轿门机械锁电气安全装置与轿厢意外移动保护(Unintended Car Movement Protection,UCMP)检测电气安全装置错接的案例,本文系统地总结了轿门的锁紧与闭合、门旁路装置、...电梯轿门门锁装置的检验是保障电梯安全性的重要一环。通过一起电梯轿门机械锁电气安全装置与轿厢意外移动保护(Unintended Car Movement Protection,UCMP)检测电气安全装置错接的案例,本文系统地总结了轿门的锁紧与闭合、门旁路装置、门回路监测功能以及UCMP功能的检验方法,并分析了检查轿门锁紧状态的电气安全装置失效的原因。展开更多
基金supported by the NSFC for Distin guished Young Scholars(No.60325104)NSFC (No.90704006)+4 种基金National 973 Program(No.2007CB310705)National 863 Program(No.2006AA01Z238)PCSIRT(No.IRT0609)ISTCP(No.2006DFA11040)111 Project(No.B07005),P.R.China
文摘National R&D activities on optical switching networkare introduced. Optical switching network testbedswere established in China including 3T-net andOBS ring and mesh network test-bed with the supportof national '863' program. As an importantmodule in OPS network, a novel all-optical serialmulticast mode is discussed.
文摘To design a Double-Pole Four-Throw (DP4T) RF switch, measurement of device parameters is required. In this DP4T RF switch CMOS is a unit cell, so with a thin oxide layer of thickness 628 ? which is measured optically. Some of the material parameters were found by the curve drawn between Capacitance versus Voltage (C-V) and Capacitance versus Frequency (C-F) with the application of Visual Engineering Environment Programming (VEE Pro). To perform the measurement processing at a distance, from the hazardous room, we use VEE Pro software. In this research, to acquire a fine result for RF MOSFET, we vary the voltage with minor increments and perform the measurements by vary the applying voltage from +5 V to –5 V and then back to +5 V again and then save this result in a data sheet with respect to temperature, voltage and frequency using this program. We have investigated the characteristics of RF MOSFET, which will be used for the wireless telecommunication systems.
文摘电梯轿门门锁装置的检验是保障电梯安全性的重要一环。通过一起电梯轿门机械锁电气安全装置与轿厢意外移动保护(Unintended Car Movement Protection,UCMP)检测电气安全装置错接的案例,本文系统地总结了轿门的锁紧与闭合、门旁路装置、门回路监测功能以及UCMP功能的检验方法,并分析了检查轿门锁紧状态的电气安全装置失效的原因。
