This paper presents a new fully integrated wide-range UHF passive RFID tag chip design that is compatible with the ISO18000-6C protocol. In order to reduce the die area, an ultra-low power CMOS voltage regulator witho...This paper presents a new fully integrated wide-range UHF passive RFID tag chip design that is compatible with the ISO18000-6C protocol. In order to reduce the die area, an ultra-low power CMOS voltage regulator without resistors and an area-efficient amplitude shift keying demodulator with a novel adaptive average generator are both adopted. A low power clock generator is designed to guarantee the accuracy of the clock under 4-4%. As the clock gating technology is employed to reduce the power consumption of the baseband processor, the total power consumption of the tag is about 14μW with a sensitivity of -9.5 dBm. The detection distance can reach about 5 m under 4 W effective isotropic radiated power. The whole tag is fabricated in TSMC 0.18μm CMOS technology and the chip size is 880 × 880μm^2.展开更多
The hydrated lanthanum acetate, LaAc3·1.5H2O（I）, was reported by and Karraker in 1964 and 1969 respectively. In our laboratory, a new compound has been prepared. As shown by the elemental analysis, Karl Fischer...The hydrated lanthanum acetate, LaAc3·1.5H2O（I）, was reported by and Karraker in 1964 and 1969 respectively. In our laboratory, a new compound has been prepared. As shown by the elemental analysis, Karl Fischer Titration and TG, it is a monohydrate, LaAc3·H2O. Its X-ray diffraction pattern is quite different from that of （I）.Through TG, DTG, DSC, IR, etc. studied, it can be ascertained that its thermal dehydration is a one-step process. The dehydration enthalpy, ΔHd, estimated by DSC is 66.77±0.24KJ·mol-1.展开更多
基金Project supported by the Guangdong Key Science and Technology Special Project of China(No.2008A090300001).
文摘This paper presents a new fully integrated wide-range UHF passive RFID tag chip design that is compatible with the ISO18000-6C protocol. In order to reduce the die area, an ultra-low power CMOS voltage regulator without resistors and an area-efficient amplitude shift keying demodulator with a novel adaptive average generator are both adopted. A low power clock generator is designed to guarantee the accuracy of the clock under 4-4%. As the clock gating technology is employed to reduce the power consumption of the baseband processor, the total power consumption of the tag is about 14μW with a sensitivity of -9.5 dBm. The detection distance can reach about 5 m under 4 W effective isotropic radiated power. The whole tag is fabricated in TSMC 0.18μm CMOS technology and the chip size is 880 × 880μm^2.
文摘The hydrated lanthanum acetate, LaAc3·1.5H2O（I）, was reported by and Karraker in 1964 and 1969 respectively. In our laboratory, a new compound has been prepared. As shown by the elemental analysis, Karl Fischer Titration and TG, it is a monohydrate, LaAc3·H2O. Its X-ray diffraction pattern is quite different from that of （I）.Through TG, DTG, DSC, IR, etc. studied, it can be ascertained that its thermal dehydration is a one-step process. The dehydration enthalpy, ΔHd, estimated by DSC is 66.77±0.24KJ·mol-1.
