This paper presents a new class of semiconductor integrated sensor which consists of sensitive components and flip flop circuit. The sensors have high sensitivity and digital output. This paper describes the operatin...This paper presents a new class of semiconductor integrated sensor which consists of sensitive components and flip flop circuit. The sensors have high sensitivity and digital output. This paper describes the operating principle and structure of the sensor. And noise effect on characteristics of the sensor is analysed in detail. The modulated effect of the triangular wave voltage is quantified. As an example, an integrated pressure sensor is introduced and the experimental results agree with the theoretical analyses.展开更多
An ultra-highly precise and long-term stable frequency transmission system over 120 km commercial fiber link has been proposed and experimentally demonstrated. This system is based on digital output compensation techn...An ultra-highly precise and long-term stable frequency transmission system over 120 km commercial fiber link has been proposed and experimentally demonstrated. This system is based on digital output compensation technique to suppress phase fluctuations during the frequency transmission process. A mode-locked erbium-doped fiber laser driven by a hydrogen maser serves as an optical transmitter. Moreover, a dense wavelength division multiplexing system is able to separate forward and backward signals with reflection effect excluded. The ultimate fractional frequency instabilities for the long-distance frequency distributed system are up to 3.14×10^(-15) at 1 s and 2.96×10^(-19) at 10 000 s, respectively.展开更多
An ultra-low-power CMOS temperature sensor with analog-to-digital readout circuitry for RFID applications was implemented in a 0.18-μm CMOS process. To achieve ultra-low power consumption, an error model is proposed ...An ultra-low-power CMOS temperature sensor with analog-to-digital readout circuitry for RFID applications was implemented in a 0.18-μm CMOS process. To achieve ultra-low power consumption, an error model is proposed and the corresponding novel temperature sensor front-end with a new double-measure method is presented. Analog-to-digital conversion is accomplished by a sigma-delta converter. The complete system consumes only 26 μA @ 1.8 V for continuous operation and achieves an accuracy of ±0.65 °C from –20 to 120 °C after calibration at one temperature.展开更多
文摘This paper presents a new class of semiconductor integrated sensor which consists of sensitive components and flip flop circuit. The sensors have high sensitivity and digital output. This paper describes the operating principle and structure of the sensor. And noise effect on characteristics of the sensor is analysed in detail. The modulated effect of the triangular wave voltage is quantified. As an example, an integrated pressure sensor is introduced and the experimental results agree with the theoretical analyses.
基金supported by the National Natural Science Foundation of China(Nos.61571244 and 61501262)the Science and Technology Project of Tianjin(No.16YFZCSF00540)the Natural Science Foundation of Tianjin(No.15JCYBJC51600)
文摘An ultra-highly precise and long-term stable frequency transmission system over 120 km commercial fiber link has been proposed and experimentally demonstrated. This system is based on digital output compensation technique to suppress phase fluctuations during the frequency transmission process. A mode-locked erbium-doped fiber laser driven by a hydrogen maser serves as an optical transmitter. Moreover, a dense wavelength division multiplexing system is able to separate forward and backward signals with reflection effect excluded. The ultimate fractional frequency instabilities for the long-distance frequency distributed system are up to 3.14×10^(-15) at 1 s and 2.96×10^(-19) at 10 000 s, respectively.
文摘An ultra-low-power CMOS temperature sensor with analog-to-digital readout circuitry for RFID applications was implemented in a 0.18-μm CMOS process. To achieve ultra-low power consumption, an error model is proposed and the corresponding novel temperature sensor front-end with a new double-measure method is presented. Analog-to-digital conversion is accomplished by a sigma-delta converter. The complete system consumes only 26 μA @ 1.8 V for continuous operation and achieves an accuracy of ±0.65 °C from –20 to 120 °C after calibration at one temperature.
