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国家自然科学基金(61271124)

作品数:12 被引量:18H指数:2
相关作者:姚茂群张立彬周旋耿亮周旋更多>>
相关机构:杭州师范大学浙江大学更多>>
发文基金:国家自然科学基金浙江省自然科学基金国家重点基础研究发展计划更多>>
相关领域:电子电信自动化与计算机技术理学更多>>

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12 条 记 录,以下是 1-10
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阈算术代数系统及电流型CMOS电路设计被引量:2
2013年
根据电流信号易于实现算术运算的特点,定义了阈算术运算、非负运算和阈算术函数,提出了和图为阈算术函数的图形表示,从而建立了阈算术代数系统.并通过具体的电流型CMOS电路的设计实例,阐述了算术意义明确的电流型电路设计方法及基于和图的电流型电路设计方法,实现了阈算术代数在二值电流型CMOS电路中的应用.计算机模拟结果表明,所设计的电路具有正确的逻辑.提出的阈算术代数系统为电流型电路的设计提供了一种新的简单有效的方法.
张官志姚茂群施锦河周旋
关键词:电流型CMOS
基于RTD的三变量特征阈值逻辑门及通用阈值逻辑门设计被引量:1
2020年
单双稳态转换逻辑单元(MOBILE)能够充分发挥共振隧穿二极管(RTD)的负内阻和快速开关转换特性,且由MOBILE构成的电路能方便地实现阈值逻辑功能。利用谱技术将三变量阈值函数分为3类;结合阈值逻辑电路的特点,分别对三变量特征阈值函数和34个具有代表性的阈值函数进行分析和比较;设计了基于RTD的新型三变量特征阈值逻辑门及通用阈值逻辑门。通过HSPICE仿真和功耗测试,验证了所设计的电路不仅具有正确的逻辑功能,而且有效减小了电路面积、降低了功耗和成本。
姚茂群冯杰王竹萍
关键词:RTDMOBILE
An algorithm for identifying symmetric variables in the canonical OR-coincidence algebra system
2014年
To simplify the process for identifying 12 types of symmetric variables in the canonical OR-coincidence(COC) algebra system, we propose a new symmetry detection algorithm based on OR-NXOR expansion. By analyzing the relationships between the coefficient matrices of sub-functions and the order coefficient subset matrices based on OR-NXOR expansion around two arbitrary logical variables, the constraint conditions of the order coefficient subset matrices are revealed for 12 types of symmetric variables. Based on the proposed constraints, the algorithm is realized by judging the order characteristic square value matrices. The proposed method avoids the transformation process from OR-NXOR expansion to AND-OR-NOT expansion, or to AND-XOR expansion, and solves the problem of completeness in the dj-map method. The application results show that, compared with traditional methods, the new algorithm is an optimal detection method in terms of applicability of the number of logical variables, detection type, and complexity of the identification process. The algorithm has been implemented in C language and tested on MCNC91 benchmarks. Experimental results show that the proposed algorithm is convenient and efficient.
Xiao-hua LIJi-zhong SHEN
基于阈算术代数系统的电流型BiCMOS多值加法器设计被引量:3
2018年
通过分析电流型BiCMOS电路特点,并以和图为阈算术函数的图形表示,设计出基于阈算术代数系统的电流型BiCMOS多值加法器.通过设计实例,阐述了运用和图将逻辑函数转化为阈算术函数的电流型BiCMOS多值加法器设计方法.HSPICE模拟结果表明,所设计的电路具有正确的逻辑功能和良好的瞬态特性.该电路设计不仅使得阈算术代数系统设计的研究得到进一步的完善,而且使得多值加法器的设计更加简单、直观有效,在性能上也得到优化.
姚茂群周传鑫
关键词:多值逻辑加法器
电流型CMOS脉冲D触发器设计被引量:9
2014年
该文根据脉冲触发器的设计要求,结合阈算术代数系统,提出一种电流型CMOS脉冲D触发器的通用结构,用于二值及多值电流型CMOS脉冲触发器的设计,并可方便地应用于单边沿和双边沿触发。在此结构的基础上设计了电流型CMOS二值、三值以及四值脉冲D触发器。采用TSMC 180 nm CMOS工艺参数对所设计的电路进行HSPICE模拟后表明所设计的电路具有正确的逻辑功能和良好的瞬态特性,且较以往文献提出的电流型D触发器,优化了触发器的建立时间和保持时间,二值和四值触发器最差最小D-Q延时比相关文献的主从触发器降低了59.67%和54.99%,比相关文献的边沿触发器降低了4.62%以上,所用晶体管数也相对减少,具有更简单的结构以及更高的电路性能。
姚茂群张立彬耿亮
关键词:集成电路电流型CMOS电路
An algorithm for identifying symmetric variables based on the order eigenvalue matrix
2017年
To simplify the process for identifying 12 types of symmetric variables in Boolean functions, we propose a new symmetry detection algorithm based on minterm expansion or the truth table. First, the order eigenvalue matrix based on a truth table is defined according to the symmetry definition of a logic variable. By analyzing the constraint conditions of the order eigenvalue matrix for 12 types of symmetric variables, an algorithm is proposed for identifying symmetric variables of the Boolean function. This algorithm can be applied to identify the symmetric variables of Boolean functions with or without don't-care terms. The proposed method avoids the restriction by the number of logic variables of the graphical method, spectral coefficient methods, and AND-XOR expansion coefficient methods, and solves the problem of completeness in the fast computation method. The algorithm has been implemented in C language and tested on MCNC91 benchmarks. The application results show that, compared with the traditional methods, the new algorithm is an optimal detection method in terms of the applicability of the number of logic variables, the Boolean function including don't-care terms, detection type, and complexity of the identification process.
Xiao-hua LIJi-zhong SHEN
Function synthesis algorithm based on RTD-based three-variable universal logic gates被引量:1
2017年
Compared with complementary metal–oxide semiconductor(CMOS), the resonant tunneling device(RTD) has better performances; it is the most promising candidate for next-generation integrated circuit devices. The universal logic gate is an important unit circuit because of its powerful logic function, but there are few function synthesis algorithms that can implement an n-variable logical function by RTD-based universal logic gates. In this paper, we propose a new concept, i.e., the truth value matrix. With it a novel disjunctive decomposition algorithm can be used to decompose an arbitrary n-variable logical function into three-variable subset functions. On this basis, a novel function synthesis algorithm is proposed, which can implement arbitrary n-variable logical functions by RTD-based universal threshold logic gates(UTLGs), RTD-based three-variable XOR gates(XOR3s), and RTD-based three-variable universal logic gate(ULG3s). When this proposed function synthesis algorithm is used to implement an n-variable logical function, if the function is a directly disjunctive decomposition one, the circuit structure will be very simple, and if the function is a non-directly disjunctive decomposition one, the circuit structure will be simpler than when using only UTLGs or ULG3s. The proposed function synthesis algorithm is straightforward to program, and with this algorithm it is convenient to implement an arbitrary n-variable logical function by RTD-based universal logic gates.
Mao-qun YAOKai YANGJi-zhong SHENCong-yuan XU
基于和图分解的三值电流型CMOS电路设计及算法研究
2019年
本文在分析了电流型CMOS电路的物理结构特点后,定义了适用于电流型CMOS电路设计的运算及电路结构.针对二变量三值电流型CMOS电路,引入了函数基本项及其和图.然后通过和图分解,将多值逻辑函数分解为适合电流型CMOS电路实现的子函数,从而得到对应电路.举例说明了分解过程和具体二变量三值电流型CMOS电路的设计过程.设计结果表明了该算法的有效性和可操作性.
姚茂群周传鑫周旋
关键词:CMOS电路多值逻辑
基于电流型CMOS电路的四类三变量函数的新型算法及实现
2020年
本文基于电流型CMOS电路的特点,结合三变量函数分类方法以及和图转化方法,提出能够实现C8^4,C8^5,C8^6,C8^7类三变量函数的新型算法.基于该新算法,任意的三变量函数都能通过单个电流型CMOS电路单元实现.设计实例表明:所设计的电路都具有正确的逻辑功能和良好的瞬态特性.
姚茂群孙曦
关键词:CMOS电路电流型
高性能电流型CMOS显性脉冲触发器设计被引量:2
2013年
提出以电流信号表示逻辑值的电流型CMOS显性脉冲触发器的设计用于低功耗高性能混合集成电路设计中,以减少存储单元开关噪声对电路性能的影响.所提出的电流型CMOS显性脉冲触发器较以往文献中电流型CMOS主从触发器和电流型CMOS边沿触发器晶体管数量分别减少11个和4个,采用TSMC 0.18μm COMS工艺参数的HSPICE模拟结果表明,所提出的电流型脉冲触发器具有正确的逻辑功能,平均延时分别减少了48.8%和57%,具有结构简单,功耗低和速度快的特性,同时该触发器可方便应用于单边沿和双边沿触发.
张立彬姚茂群王彤
关键词:电流型CMOS电路脉冲触发器高性能混合集成电路
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