摘要：This paper presents a fully integrated passive UHF RFID tag chip complying with the ISO18000-6B *** tag chip includes an RF/analog front-end,a baseband processor,and a 512-bit EEPROM *** improve power conversion efficiency,a Schottky barrier diode based rectifier is adopted.A novel voltage reference using the peaking current source is discussed in detail,which can meet the low-power,low-voltage requirement while retaining circuit *** of the analog blocks are designed to work under sub-1 V to reduce power consumption,and several practical methods are used to further reduce the power consumption of the baseband *** whole tag chip is implemented in a TSMC 0.18μm CMOS process with a die size of 800×800μm;. Measurement results show that the total power consumption of the tag chip is only 7.4μW with a sensitivity of -12 dBm.

摘要：A fully integrated passive UHF RFID tag complying with the ISO 18000-6B protocol is presented, which includes an analog front-end, a baseband processor, and an EEPROM memory. To extend the communication range, a high efficiency differential-drive CMOS rectifier is adopted. A novel high performance voltage limiter is used to provide a stable limiting voltage, with a 172 mV voltage variation against temperature variation and process dispersion. The dynamic band-enhancement technique is used in the regulator circuit to improve the regulating capacity. A rail-to-rail hysteresis comparator is adopted to demodulate the signal correctly in any condition. The whole transponder chip is implemented in a 0.18μm CMOS process, with a die size of 900 × 800 μm2. Our measurement results show that the total power consumption of the tag chip is only 6.8 μW, with a sensitivity of -13.5 dBm.

摘要：Wireless capsule endoscopy(CE), an image inspection technique, has been an important advancement in the diagnosis of gastrointestinal(GI) tract diseases. A video capsule endoscopy(VCE) system is analyzed in this study. A complementary metal oxide semiconductor(CMOS) analog image sensor is adopted, and other illumination, communication and energy modules are designed for functional realization. Measuring only φ11 mm ×25 mm, the VCE has a total power consumption of 52.5 m W, which enables it to work continuously for 8 h. The in vivo experiment on a living pig indicates that a clear video with high frame rate of 30 f/s can be obtained.

摘要：In view of fuzzy and unstable images received in video capsule endoscopy, and the poor communication effect, an improved radio frequency(RF) transmission circuit module with low power consumption and helix antenna is designed to improve the performance of video transmission and to extend the working time of the capsule. Simulation and analysis of the circuits and antenna with HFSS12 and ADS2011 software are *** capsule endoscope prototypes are made and evaluated to verify the feasibility of the proposed design. In vitro tests and animal experiments show that the results of the antenna tests basically meet the simulation, and the power consumption of RF circuit is 15.9 mV. The video capsule endoscope works well with the receiver with multiple receiving antennas, and the working time is more than 9 h. It can realize the wireless transmission of the video data, and images received are clear and stable in comparison with the previous designs.

摘要：This article proposes a novel pneumatic soft actuator,which can perform bending in different directions under positive or negative air *** actuators are composed of multiple airbags,and the design of the airbags is analyzed.A pneumatic soft robot based on these soft actuators is designed and fabricated by 3D printing *** robot consists of three soft multi-bladder actuators,one soft sensor,middle layer,bottom layer,front barb,front feet and rear *** to the different positive or negative pressure control of the three soft multi-bladder actuators,the robot can perform both linear,crossing and climbing *** soft robot has excellent environmental adaptability and can pass through complex environments by combining three modes of ***,we establish the closed-loop automatic control system using soft *** soft sensor can be stretched and compressed as the soft robot's ***,the automatic control system is verified by linear,crossing and climbing movement *** indicate that the robot can pass through complex environments under the closed-loop control system.

摘要：We design a novel X-ray image detector by lens coupling a Gd2O2S：Tb intensifying screen with a high performance low-light-level （L^3, which often means luminescence less than 10^-3 Lux） image intensifier. Different coupling effects on imaging performance between zoom lens and fix-focus lens are analyzed theoretically. In experiment, for designing a detector of 15-inch visual field, the system coupled by zoom lens is of 12.25-lp/cm resolution, while the one with fix-focus lens is 10 lp/cm. The superiority of zoom lens is validated. It is concluded that zoom lens preserves the image information better than fix-focus lens and improves the imaging system＇s performance in this design, which is referential to the design of other optical imaging systems.

摘要：A kind of closed-loop Hall effect sensor is designed and fabricated by considering several factors such as iron core material, Hall device, as well as selected integrated circuit. Through studying the effect of the iron material and structures of current sensor, a kind of optimal Hall effect current sensor is found. The experimental results show that the presented closed-loop Hall effect current sensor achieves 1 mA/A sensitivity. And its lineafity and accuracy are 0.1% and 0.35% FS, respectively, at cur- rents ranging from 0 to 50 A.

摘要：RF MEMS因某些现实性的问题而停滞不前,而可编程硅晶方法,则为OEM及系统设计者带来了实质利益。Lime microsystems所开发出的单晶收发器便是满足相关需求的理想方案。

摘要：使用在线电子表格，设计人员可从一个通用滤波器传递函数推导出最常见的滤波器类型。

摘要：本文介绍了ISO 26262的功能安全标准规定的与安全相关的汽车系统开发准则,以及这一准则对道路中行驶的车辆与安全相关的电子系统开发过程和设计中提出的要求,并就Allegro公司用于关键安全应用的角度传感器IC做了相应的介绍。