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SDPSOL: a parser/solver for semidefinite programs with matrix structure
Design communication information theory statistics combinatorial optimization computational geometry the circuit design
2015/8/11
A variety of analysis and design problems in control, communication and information theory, statistics, combinatorial optimization, computational geometry, circuit design, and other fields can be expr...
Optimal allocation of local feedback in multistage amplifiers via geometric programming
Amplifiers analog circuits circuit optimization design automation geometric programming sensitivity
2015/8/11
We consider the problem of optimally allocating local feedback to the stages of a multistage amplifier. The local feedback gains affect many performance indices for the overall amplifier, such as band...
Optimization of phase-locked loop circuits via geometric programming
Phase-locked loop circuit geometric programming frequency phase lock loop
2015/8/11
We describe the global optimization of phase-locked loop (PLL) circuits using geometric programming (GP). Equations for the jitter, frequency range, and power of the PLL are presented in GP form. An a...
ORACLE: Optimization with recourse of analog circuits including layout extraction
Optimization with recourse
2015/8/11
Long design cycles due to the inability to predict silicon realities is a well-known problem that plagues analogRF integrated circuit product development. As this problem worsens for technologies belo...
A new method for design of robust digital circuits
Logic process optimizing circuit digital circuit parameters function monte carlo
2015/8/11
As technology continues to scale beyond 100nm, there is a significant increase in performance uncertainty of CMOS logic due to process and environmental variations. Traditional circuit optimization me...
OPERA: Optimization with ellipsoidal uncertainty for robust analog IC design
S tatistical optim ization
2015/8/10
As the design-manufacturing interface becomes increasingly complicated with IC technology scaling, the corresponding process variability poses great challenges for nanoscale analog/RF design. Design o...
Minimizing effective resistance of a graph
weighted Laplacian eigenvalues electrical network weighted graph
2015/8/10
The effective resistance between two nodes of a weighted graph is the electrical resistance seen between the nodes of a resistor network with branch conductances given by the edge weights. The effecti...
An efficient method for large-scale gate sizing
Combinational logic circuits geometric process circuit
2015/8/10
We consider the problem of choosing the gate sizes or scale factors in a combinational logic circuit in order to minimize the total area, subject to simple RC timing constraints, and a minimum allowed...
Optimized self-tuning for circuit aging
Control strategy optimization parameters circuit aging supply voltage the computing power to maximize efficiency
2015/8/7
We present a framework and control policies for optimizing dynamic control of various self-tuning parameters over lifetime in the presence of circuit aging. Our framework introduces dynamic cooling as...
一种基于D类功放的逆变电源设计
逆变电源 间歇性感性负载 D 类功率放大电路 IRS2092S
2016/10/12
针对传统正弦波逆变电源设计中输出电压出现的线性及非线性失真问题，提出一种基于D 类功率放大电 路的正弦波逆变电源设计方法。分析传统逆变电源的缺点，根据A 类、AB 类功率放大电路的不足，采用基于IR 公 司的D 类芯片IRS2092S 为核心设计电路，并进行实验验证。结果表明：该方法不但能有效解决传统正弦波逆变电 源间歇性感性负载的波形失真难题，而且具有良好的高效性和实用性。
某型拖曳接收换能器的改进研究
拖曳阵 有限元 接收换能器 灵敏度
2016/10/12
为提高拖曳接收换能器的灵敏度，对该换能器的性能进行改进研究。对拖曳接收换能器的电声性能进行 有限元仿真，将原拖曳接收换能器内有机玻璃盖板替换为铜质盖板及在压电陶瓷圆管内增加软木橡胶背衬，并对改 进前后的性能进行对比分析。结果表明，改进后的拖曳接收换能器的灵敏度起伏在 4 dB 以内，且指向性特性没有明 显变化。通过改进设计后，能大幅减小换能器的灵敏度起伏，可简化后级处理电路，同时提高系统的动态范围...
噪声性能是限制光电检测电路探测能力的重要因素,针对这个问题,设计了基于光电二极管反偏的光电检测电路并分析其电路噪声,分析噪声时,创新性地从光电检测电路结构出发,将整个电路等效为光电二极管、晶体三极管、运算放大器三个级联模块,详尽分析了每个模块的噪声来源及其相关因素,计算每个模块的输出噪声,最终得出整个电路的输出噪声电压模型。根据输出噪声电压模型,确定了电路的各项参数,预估电路的输出噪声电压,最后,...
二极管型非制冷红外探测器的前端电路设计
跨导放大器 电容反馈跨阻放大器 Gm-C-OP积分放大器
2016/7/28
设计了一种二极管型非制冷红外探测器的前端电路,该电路采用Gm-C-OP积分放大器的结构,将探测器输出的微弱电压信号经跨导放大器(OTA)转化为电流信号,再经电容反馈跨阻放大器(CTIA)积分转化为电压信号输出。该OTA采用电流反馈型结构,可以获得比传统OTA更高的线性度和跨导值。输入采用差分结构,可以有效地消除环境温度及制造工艺对探测器输出信号的影响。电路采用0.35 μm CMOS工艺进行设计并...
实现快速故障保护的IGBT驱动电路
HCPL-316J IGBT驱动电路 故障保护
2016/5/23
针对较复杂的变流系统中，主控系统的延滞会影响IGBT模块故障保护失败的问题，设计一种快速故障保护的IGBT驱动电路。分析了现有应用方式存在HCPL-316J两个输入端中的另一个端子的功能没有得到充分利用的缺陷，通过对HCPL-316J的信号输入端Vin+、Vin-和故障信号反馈端FAULT的应用研究，改进为FAULT信号反馈回另一个输入端子，光耦芯片故障信号发出后立即封锁IGBT驱动信号，完全消除...