An improved multiphase sinusoidal oscillator using current feedback amplifiers

In this article, a new multiphase sinusoidal oscillator (MSO) using current feedback amplifiers (CFAs) is presented in which the oscillating frequency is determined by the internal pole of the CFA. The proposed topology is an improved form of the idea employed by Wu et al. in which the CFA pole is used to set the oscillating frequency. The improved circuit employs local negative feedback around each active device and requires no access to the z terminal. Because of this latter feature, the full range of CFAs can be utilised in the implementation of this circuit. The resulting MSO is able to operate at normal power supply voltages and can deliver high output voltage swing at high frequency with relatively low harmonic distortion. The proposed circuit was tested using the AD844 CFA and the expected signal output characteristics were confirmed.

[1]  Muhammad Ali Al-Qahtani.  Low component second-generation current conveyor-based multiphase sinusoidal oscillator , 1998 .

[2]  Stephan J. G. Gift.  Multiphase sinusoidal oscillator system using operational amplifiers , 1997 .

[3]  Syed Enamul Haque,et al.  A simple three-phase variable-fraquency oscillator , 1982 .

[4]  Stephan J. G. Gift.  Multiphase sinusoidal oscillator using inverting-mode operational amplifiers , 1998, IEEE Trans. Instrum. Meas..

[5]  D. Stiurca.  On the multiphase symmetrical active-R oscillators , 1994 .

[6]  Samir K. Datta.  A Novel Three-Phase Oscillator for the Speed Control of Ac Motors , 1971 .

[7]  V. P. Ramamurthi,et al.  A Novel Three-Phase Reference Sine-Wave Generator for PWM Inverters , 1982, IEEE Transactions on Industrial Electronics.

[8]  Costas Psychalinos,et al.  Electronically controlled multiphase sinusoidal oscillators using current amplifiers , 2009, Int. J. Circuit Theory Appl..

[9]  R. Holzel.  A simple wide-band sine wave quadrature oscillator , 1993 .

[10]  Worapong Tangsrirat,et al.  Current-Mode Multiphase Sinusoidal Oscillator Using Current Differencing Transconductance Amplifiers , 2008 .

[11]  Worapong Tangsrirat,et al.  Current-mode multiphase sinusoidal oscillator using CDTA-based allpass sections , 2009 .

[12]  Muhammad Taher Abuelma'atti,et al.  Active-R multiphase oscillators , 1987 .

[13]  Montree Siripruchyanun,et al.  High-output-impedance current-mode multiphase sinusoidal oscillator employing current differencing transconductance amplifier-based allpass filters , 2010 .

[14]  Iqbal A. Khan,et al.  Tunable OTA-based multiphase sinusoidal oscillators , 1992 .

[15]  C. Psychalinos,et al.  Multiphase sinusoidal oscillators using second generation current conveyors , 2010 .

[16]  Yongan Li.  A novel current-mode multiphase sinusoidal oscillator using MO-CDTAs , 2012 .

[17]  Ben-Zion Kaplan,et al.  A Versatile Voltage Controlled Three Phase Oscillator , 1979, IEEE Transactions on Industrial Electronics and Control Instrumentation.

[18]  Paresh C. Sen,et al.  A Versatile Three Phase Oscillator , 1977, IEEE Transactions on Industrial Electronics and Control Instrumentation.

[19]  Stephan J. G. Gift.  The application of all-pass filters in the design of multiphase sinusoidal systems , 2000 .

[20]  Luca Konig,et al.  Design With Operational Amplifiers And Analog Integrated Circuits , 2016 .

[21]  Shen-Iuan Liu,et al.  Multiphase sinusoidal oscillator using the CFOA pole , 1995 .

[22]  Wasfy B. Mikhael,et al.  Continuous and switched-capacitor multiphase oscillators , 1984 .

[23]  Chun-Li Hou,et al.  Second-generation current conveyor-based multiphase sinusoidal oscillators , 1995 .

[24]  U. E. Ayten,et al.  Current and voltage mode multiphase sinusoidal oscillators using CBTAs , 2013 .

[25]  Pipat PROMMEE,et al.  Electronically Tunable Current-mode Multiphase Sinusoidal Oscillator Employing CCCDTA-based Allpass Filters with Only Grounded Passive Elements , 2011 .

[26]  Shen-Iuan Liu,et al.  Multiphase sinusoidal oscillator using second-generation current conveyors , 1995 .

[27]  Sergio Franco,et al.  Design with Operational Amplifiers and Analog Integrated Circuits , 1988 .