基于CDCTA的双模式等幅正交振荡器
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摘要
针对正交振荡器实现复杂、振幅不相等、模式单一等问题,提出了一种基于电流差分级联跨导放大器的双模式正交振荡器。该电路仅使用一个电流差分级联跨导放大器、一个接地电阻和两个接地电容,可以同时产生等幅电压和电流正交信号。电路结构简单,灵敏度低,易于集成,振荡条件和振荡频率可相互独立地电控调谐。PSPICE仿真与硬件实验结果验证了理论分析的正确性。
In order to solve the problems of complex circuit,single mode and different amplitudes in quadrature oscillator circuits, a novel dual-mode quadrature oscillator based on the current differencing cascaded transconductance amplifier(CDCTA)was proposed.The designed oscillator circuit,which adopted only one CDCTA,one grounded resistor and two grounded capacitors,could generate quadrature voltage and current outputs with equal amplitudes simultaneously.The oscillator enjoyed the advantages of simple circuit structure,lowsensitivity and easy to integrate.Moreover,the oscillation condition and the oscillation frequency of the proposed quadrature oscillator could be tuned electronically and independently.PSPICE simulation and hardware experiment results were given to validate the theoretical analysis.
In order to solve the problems of complex circuit,single mode and different amplitudes in quadrature oscillator circuits, a novel dual-mode quadrature oscillator based on the current differencing cascaded transconductance amplifier(CDCTA)was proposed.The designed oscillator circuit,which adopted only one CDCTA,one grounded resistor and two grounded capacitors,could generate quadrature voltage and current outputs with equal amplitudes simultaneously.The oscillator enjoyed the advantages of simple circuit structure,lowsensitivity and easy to integrate.Moreover,the oscillation condition and the oscillation frequency of the proposed quadrature oscillator could be tuned electronically and independently.PSPICE simulation and hardware experiment results were given to validate the theoretical analysis.
引文
[1] TOUMAZOU C,LIDGEY F J,HAIGH D H.Analogue IC design:the current-mode approach[M].London:Presbyterian Publishing Corp.,1990:10-110.
[2] BIOLEK D.CDTA-building block for current-mode analog signal processing[C]∥Proceed Europ Conf Circ Theo&Des.Krakow,Poland.2003:397-400.
[3] LINARES B B,SERRANO G T.A precise 90°quadrature OTA-C oscillator tunable in the 50-130-MHz range[J].IEEE Trans Circ&Syst I:Regu Pap,2004,51(4):649-663.
[4] KILINC S,JAIN V,AGGARW AL V,et al.Catalogue of variable frequency and single-resistancecontrolled oscillators employing a single differential difference complementary current conveyor[J].Frequenz,2006,60:142-146.
[5] JAIKLA W,SIRIPRUCHYANUN M,BAJER J,et al.A simple current-mode quadrature oscillator using single CDTA[J].Radioengineering,2008,17(4):33-40.
[6] LAHIRI A.Comment:novel voltage/current-mode quadratureoscillatorusingcurrentdifferencing transconductance amplifier[J].Anal Integr Circ&Signal Process,2009,61(2):199-203.
[7] JIN J,WANG C H.CDTA-based electronically tunable current-mode quadrature oscillator[J].Int J Elec,2014,101(8):1086-1095.
[8] CHEN S,WANG J.Current-mode current-tunable four-phase quadrature oscillator[J].Optik-Int J Light&Elec Optics,2014,125(20):6227-6230.
[9] JIN J,WANG C H.Current-mode universal filter and quadrature oscillator using CDTAs[J].Turkish J Elec Engineer&Comput Sci,2014,22(2):276-286.
[10]SUMMART S,THONGSOPA C,JAIKLA W.New current-controlled current-mode sinusoidal quadrature oscillators using CDTAs[J].AEU-Int J Elec&Commun,2015,69(1):62-68.
[11]XU J,WANG C H,JIN J.Current differencing cascaded transconductance amplifier(CDCTA)and its applications on current-mode nth-order filters[J].Circ, Syst&Signal Process, 2013, 32(5):2047-2063.
[12]TLELO C E,DELA F L G,PHANRATTANACHAI K,et al.CDCTA and OTA realizations of a multiphase sinusoidal oscillator[J].IETE Tech Rev,2015,32(6):497-504.
[13]WANG C H,LIN H R.Multifunction current differencing cascaded transconductance amplifier(MCDCTA)and its application to current-mode multiphase sinusoidal oscillator[J].J Elec Engineer,2015,66(5):241-249.
[14]王春华,蔺海荣,李毅,等.基于单个CDCTA的低压电控调谐电流模式多相位正弦振荡器的设计[J].通信学报,2015,36(8):8-12.
[15]雷才洪.单片CDCTA-C低功耗电控调谐双模式三阶正交振荡器的设计[J].电子学报,2017,45(3):599-604.
[16]王春霞,司国斌,郭亚涛.基于CDCTA和MOCCII的低功耗电流模式n阶滤波器[J].微电子学,2017,47(5):625-629.
[2] BIOLEK D.CDTA-building block for current-mode analog signal processing[C]∥Proceed Europ Conf Circ Theo&Des.Krakow,Poland.2003:397-400.
[3] LINARES B B,SERRANO G T.A precise 90°quadrature OTA-C oscillator tunable in the 50-130-MHz range[J].IEEE Trans Circ&Syst I:Regu Pap,2004,51(4):649-663.
[4] KILINC S,JAIN V,AGGARW AL V,et al.Catalogue of variable frequency and single-resistancecontrolled oscillators employing a single differential difference complementary current conveyor[J].Frequenz,2006,60:142-146.
[5] JAIKLA W,SIRIPRUCHYANUN M,BAJER J,et al.A simple current-mode quadrature oscillator using single CDTA[J].Radioengineering,2008,17(4):33-40.
[6] LAHIRI A.Comment:novel voltage/current-mode quadratureoscillatorusingcurrentdifferencing transconductance amplifier[J].Anal Integr Circ&Signal Process,2009,61(2):199-203.
[7] JIN J,WANG C H.CDTA-based electronically tunable current-mode quadrature oscillator[J].Int J Elec,2014,101(8):1086-1095.
[8] CHEN S,WANG J.Current-mode current-tunable four-phase quadrature oscillator[J].Optik-Int J Light&Elec Optics,2014,125(20):6227-6230.
[9] JIN J,WANG C H.Current-mode universal filter and quadrature oscillator using CDTAs[J].Turkish J Elec Engineer&Comput Sci,2014,22(2):276-286.
[10]SUMMART S,THONGSOPA C,JAIKLA W.New current-controlled current-mode sinusoidal quadrature oscillators using CDTAs[J].AEU-Int J Elec&Commun,2015,69(1):62-68.
[11]XU J,WANG C H,JIN J.Current differencing cascaded transconductance amplifier(CDCTA)and its applications on current-mode nth-order filters[J].Circ, Syst&Signal Process, 2013, 32(5):2047-2063.
[12]TLELO C E,DELA F L G,PHANRATTANACHAI K,et al.CDCTA and OTA realizations of a multiphase sinusoidal oscillator[J].IETE Tech Rev,2015,32(6):497-504.
[13]WANG C H,LIN H R.Multifunction current differencing cascaded transconductance amplifier(MCDCTA)and its application to current-mode multiphase sinusoidal oscillator[J].J Elec Engineer,2015,66(5):241-249.
[14]王春华,蔺海荣,李毅,等.基于单个CDCTA的低压电控调谐电流模式多相位正弦振荡器的设计[J].通信学报,2015,36(8):8-12.
[15]雷才洪.单片CDCTA-C低功耗电控调谐双模式三阶正交振荡器的设计[J].电子学报,2017,45(3):599-604.
[16]王春霞,司国斌,郭亚涛.基于CDCTA和MOCCII的低功耗电流模式n阶滤波器[J].微电子学,2017,47(5):625-629.