Cascode混沌电路负阻模型与电路设计
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摘要
针对Cascode结构振荡器进行研究,通过理论推导和分析,给出两级负阻提升的通用模型,该模型可以被广泛应用于混沌电路设计中,实际电路设计时可以用合适的负阻电路单元替代两级结构中的下级部分,实现电路负阻的提升。仿真设计结果表明,基于该模型设计的混沌电路的混沌振荡基频f0为4.2 GHz,f0/fT值达到0.46,较经典单级电路有较大提升。
A two-stage negative resistance enhancement model is presented based on research,theoretical derivation and analysis of Cascode oscillator. This general negative resistance model can be broadly used in chaotic circuit design. In practical circuit design, the negative resistance can be enhanced by replacing the lower-stage with an appropriate negative resistance unit. Simulation results show that the chaotic fundamental frequency f0 of the novel circuit is 4.2 GHz and the f0/fT value is up to 0.46, which is much higher than that of classical single-stage circuit.
A two-stage negative resistance enhancement model is presented based on research,theoretical derivation and analysis of Cascode oscillator. This general negative resistance model can be broadly used in chaotic circuit design. In practical circuit design, the negative resistance can be enhanced by replacing the lower-stage with an appropriate negative resistance unit. Simulation results show that the chaotic fundamental frequency f0 of the novel circuit is 4.2 GHz and the f0/fT value is up to 0.46, which is much higher than that of classical single-stage circuit.
引文
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[7]GU Q J,XU Z,JIAN H Y.CMOS THz generator with frequency selective negative resistance tank[J].IEEE Transactions on Terahertz Science and Technology,2012,2(2):193-202.DOI:10.1109/TTHZ.2011.2181922.
[8]黄晓宗,黄文刚,刘凡,等.一种提高放大器增益和带宽的设计技术分析[J].太赫兹科学与电子信息学报,2015,13(3):468-472.(HUANG Xiaozong,HUANG Wengang,LIU Fan,et al.A gain and bandwidth enhancement technique for amplifier[J].Journal of Terahertz Science and Electronic Information Technology,2015,13(3):468-472.)DOI:10.11805/TKYDA201503.0468.
[2]TAMAS?EVI?IUS A,BUMELIEN?S,LINDBERG E.Improved chaotic Colpitts oscillator for ultrahigh frequencies[J].Electronics Letters,2004,40(25):1569-1570.DOI:10.1049/el:20047019.
[3]LINDBERG E,TAMAS EVI?IUS A,MYKOLAITIS G,et al.Towards threshold frequency in chaotic Colpitts oscillator[J].International Journal of Bifurcation and Chaos,2007,17(10):3449-3453.DOI:10.1142/S0218127407019196.
[4]CHEN W L,HU S W,LIU X Z,et al.A non common-node chaotic Colpitts oscillator with negative resistance enhancement[J].IEICE Electronics Express,2014,11(22):1-6.DOI:10.1587/elex.11.20140902.
[5]陈文兰,王昊,郑林华,等.负阻提升的微波混沌振荡器的设计[J].微波学报,2016,32(5):55-57.(CHEN Wenlan,WANGHao,ZHENG Linhua,et al.Design of microwave chaotic oscillator with enhanced negative resistance[J].Journal of Microwaves,2016,32(5):55-57.)DOI:10.14183/j.cnki.1005-6122.201605013.
[6]WORAPISHET A,VIRUNPHUN S,CHONGCHEAWCHAMNAN M.A mutual negative resistance quadrature CMOS LC oscillator[J].IEEE International Symposium on Circuits and Systems,2004(4):IV-137-140.DOI:10.1109/ISCAS.2004.1328959.
[7]GU Q J,XU Z,JIAN H Y.CMOS THz generator with frequency selective negative resistance tank[J].IEEE Transactions on Terahertz Science and Technology,2012,2(2):193-202.DOI:10.1109/TTHZ.2011.2181922.
[8]黄晓宗,黄文刚,刘凡,等.一种提高放大器增益和带宽的设计技术分析[J].太赫兹科学与电子信息学报,2015,13(3):468-472.(HUANG Xiaozong,HUANG Wengang,LIU Fan,et al.A gain and bandwidth enhancement technique for amplifier[J].Journal of Terahertz Science and Electronic Information Technology,2015,13(3):468-472.)DOI:10.11805/TKYDA201503.0468.