This paper proposes novel floating-gate MOSFET (FGMOS) based Voltage Buffer, Analog Inverter and Winner-Take-All (WTA) circuits. The proposed circuits have low power dissipation. All proposed circuits are simulated us...This paper proposes novel floating-gate MOSFET (FGMOS) based Voltage Buffer, Analog Inverter and Winner-Take-All (WTA) circuits. The proposed circuits have low power dissipation. All proposed circuits are simulated using SPICE in 180 nm CMOS technology with supply voltages of ±1.25 V. The simulation results demonstrate increase in input range for FGMOS based voltage buffer and analog inverter and maximum power dissipation of 0.5 mW, 1.9 mW and 0.429 mW for FGMOS based voltage buffer, analog inverter and WTA circuits, respectively. The proposed circuits are intended to find applications in low voltage, low power consumer electronics.展开更多
本文提出了一种高精度的二阶无源噪声整形逐次逼近型模数转换器(NS SAR ADC)。首先,采用了一种通过动态浮动反向放大器(FIA)实现kT/C噪声消除的技术,随后结合差分结构的定制电容,实现更小的电容阵列面积的同时抑制了采样热噪声。最后,...本文提出了一种高精度的二阶无源噪声整形逐次逼近型模数转换器(NS SAR ADC)。首先,采用了一种通过动态浮动反向放大器(FIA)实现kT/C噪声消除的技术,随后结合差分结构的定制电容,实现更小的电容阵列面积的同时抑制了采样热噪声。最后,采用翻转电压跟随器(FVF)结构作为动态缓冲器提取残差电压,并通过电容堆叠的操作实现无源求和,对比较器噪声与量化噪声进行了二阶整形。该设计采用0.18μm工艺实现,仿真表明,在1.8 V电源电压、8倍过采样率和2 MS/s的采样频率下,信号噪声失真比(SNDR)为88.57 dB,无杂散动态范围(SFDR)为99.09 dB,功耗仅为302μW。展开更多
A new multi function voltage-mode universal biquadratic filter using single Voltage Differencing Differential Input Buffered Amplifier (VD-DIBA), two capacitors and one resistor is proposed. The proposed configuration...A new multi function voltage-mode universal biquadratic filter using single Voltage Differencing Differential Input Buffered Amplifier (VD-DIBA), two capacitors and one resistor is proposed. The proposed configuration has four inputs and one output and can realize all the five standard filters from the same circuit configuration. The presented biquad filter offers low active and passive sensitivities. The validity of proposed universal biquadratic filter has been verified by SPICE simulation using 0.35 μm MIETEC technology.展开更多
基于EOS/MODIS NPP数据集,对神东矿区植被净初级生产力（NPP）变化的时空特征及主要影响因素进行分析。研究表明,2000—2010年,神东矿区植被年NPP主要介于（98-160）g C/（m^2·a）区间,11 a平均值为139.80 g C/（m^2·a）,低...基于EOS/MODIS NPP数据集,对神东矿区植被净初级生产力（NPP）变化的时空特征及主要影响因素进行分析。研究表明,2000—2010年,神东矿区植被年NPP主要介于（98-160）g C/（m^2·a）区间,11 a平均值为139.80 g C/（m^2·a）,低于同期全国植被年平均NPP值360.97 g C/（m^2·a）约61.3%,低于同期矿区10 km缓冲区年平均NPP值142.49 g C/（m^2·a）约2%,同时也低于同纬度对比区域年均NPP值161.97 g C/（m^2·a）约13.7%。11 a NPP值一元线性回归分析表明,3个区域2000—2010年平均NPP变化趋势及斜率特征大致相符,相关系数均达到0.94以上;植被NPP与同期气候因子的相关性分析表明,神东矿区植被年NPP与年降水量相关系数较大,为0.716。展开更多
文摘This paper proposes novel floating-gate MOSFET (FGMOS) based Voltage Buffer, Analog Inverter and Winner-Take-All (WTA) circuits. The proposed circuits have low power dissipation. All proposed circuits are simulated using SPICE in 180 nm CMOS technology with supply voltages of ±1.25 V. The simulation results demonstrate increase in input range for FGMOS based voltage buffer and analog inverter and maximum power dissipation of 0.5 mW, 1.9 mW and 0.429 mW for FGMOS based voltage buffer, analog inverter and WTA circuits, respectively. The proposed circuits are intended to find applications in low voltage, low power consumer electronics.
文摘A new multi function voltage-mode universal biquadratic filter using single Voltage Differencing Differential Input Buffered Amplifier (VD-DIBA), two capacitors and one resistor is proposed. The proposed configuration has four inputs and one output and can realize all the five standard filters from the same circuit configuration. The presented biquad filter offers low active and passive sensitivities. The validity of proposed universal biquadratic filter has been verified by SPICE simulation using 0.35 μm MIETEC technology.
文摘基于EOS/MODIS NPP数据集,对神东矿区植被净初级生产力（NPP）变化的时空特征及主要影响因素进行分析。研究表明,2000—2010年,神东矿区植被年NPP主要介于（98-160）g C/（m^2·a）区间,11 a平均值为139.80 g C/（m^2·a）,低于同期全国植被年平均NPP值360.97 g C/（m^2·a）约61.3%,低于同期矿区10 km缓冲区年平均NPP值142.49 g C/（m^2·a）约2%,同时也低于同纬度对比区域年均NPP值161.97 g C/（m^2·a）约13.7%。11 a NPP值一元线性回归分析表明,3个区域2000—2010年平均NPP变化趋势及斜率特征大致相符,相关系数均达到0.94以上;植被NPP与同期气候因子的相关性分析表明,神东矿区植被年NPP与年降水量相关系数较大,为0.716。
基金This research was supported in part by the National Science Council of Taiwan under contract No.NSC 94-2218-E-005-011also thank the Toppoly Optoelectronics Corporation for their technical support.
