共查询到17条相似文献,搜索用时 46 毫秒
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双向负阻器件的数值模拟 总被引:2,自引:0,他引:2
本文通过对双向负阻器件进行数值模拟,分析了其产生负阻的内部图象,模拟结果表明,高阻集电区厚度的减小或衬底杂质浓度的增加使负阻曲线的摆幅增大,而基区掺杂浓度的提高将使负阻曲线的峰值减小。 相似文献
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光电负阻晶体管的初步研究 总被引:11,自引:1,他引:11
本文对“λ”双极晶体管型光电负阻晶体管,首次给出了完整的等效电路,并以此等效电路为基础,用PSPICE电路模拟程序,对PLBT的Iph-VcE特性进行了模拟。模拟结果与从PLBT实验性器件实测的Iph-VCE特性吻合得很好,初步研究还表明,此器件除了作为光探测器外,还具有光生振荡和光控调频等功能。 相似文献
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光电双向负阻晶体管(PBNRT)是一种新型S型光电负阻器件.本文对它的光电负阻特性进行了数值模拟和实验研究,给出了器件等效电路.PBNRT在光电混合工作模式下具有光控电流开关效应,可通过光照和控制电压两种控制方式改变器件的S型负阻特性.模拟和实验结果均表明:光照强度增大,维持电压基本保持不变,转折电压减小,负阻电压摆幅减小;而增大控制电压,维持电压和转折电压均增大,输出负阻特性曲线右移.上述特点使得PBNRT可望在光电开关、光控振荡和光电探测等方面有很好的应用前景. 相似文献
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介绍了微波和超高速异质结器件的研究和发展,着重叙述了各种异质结场效应管、异质结双极晶体管和双极场效应管的特点、发展水平和新型器件结构。 相似文献
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双管S型负阻器件的研究 总被引:4,自引:0,他引:4
模拟电路实验证明用两个同极性的晶体管以多种电路接法都能获得具有S型负阻特性的两端器件。在此实验基础上研制得到一种双向两端S型负阻器件(TBNRD器件)。本文还对该器件产生负阻的原因进行了理论分析。 相似文献
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N-shaped negative differential resistance field effect transistors (NDRFETs) have been fabricated and demonstrated. The interesting N-shaped NDRs are three terminal controlled phenomena. This N-shaped NDR behavior is found in the higher drain-to-source voltage (VDS) regime and is obtained both at positive and negative gate-to-source bias (VGS). We believe that the NDR phenomena are attributed to the real space transfer (RST) effect. Due to the modulation doped effect and different barrier height, the NDR behavior can easily be controlled. The influence of VGS bias on the NDR characteristics is also investigated. 相似文献
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This paper presents an improved memristor-based relaxation oscillator which offers higher frequency and wider tunning range than the existing reactance-less oscillators. It also has the capability of operating on two positive supplies or alternatively a positive and negative supply. Furthermore, it has the advantage that it can be fully integrated on-chip providing an area-efficient solution. On the other hand, The oscillation concept is discussed then a complete mathematical analysis of the proposed oscillator is introduced. Furthermore, the power consumption of the new relaxation circuit is discussed and validated by the PSPICE circuit simulations showing an excellent agreement. MATLAB results are also introduced to demonstrate the resistance range and the corresponding frequency range which can be obtained from the proposed relaxation oscillator. 相似文献