Two Simple Analog Multiplier Based Linear VCOs Using a Single Current Feedback Op-Amp

Two simple voltage-controlled-oscillators (VCO) with linear tuning laws employing only a single current feedback operational amplifier (CFOA) in conjunction with two analog multipliers (AM) have been highlighted. The workability of the presented VCOs has been demonstrated by experimental results based upon AD844 type CFOAs and AD534 type AMs.

[1]  Raj Senani,et al.  Synthesis of single-resistance-controlled oscillators using CFOAs: simple state-variable approach , 1997 .

[2]  Raj Senani,et al.  New CFOA-Based Single-Element-Controlled Sinusoidal Oscillators , 2006, IEEE Transactions on Instrumentation and Measurement.

[3]  Khaled Hayatleh,et al.  Current-feedback operational amplifiers and applications , 1997 .

[4]  A. Elwakil,et al.  Wien oscillators using current conveyors , 1999 .

[5]  Raj Senani,et al.  New active-R sinusoidal VCOs with linear tuning laws , 1996 .

[6]  S. S. Gupta,et al.  State variable synthesis of single-resistance-controlled grounded capacitor oscillators using only two CFOAs: additional new realisations , 1998 .

[7]  Ved Prakash Singh,et al.  Linear sinusoidal VCO , 1988 .

[8]  Abdhesh K. Singh,et al.  Linear sinusoidal VCOs: new configurations using current-feedback-op-amps , 2010 .

[9]  Raj Senani,et al.  State variable synthesis of single resistance controlled grounded capacitor oscillators using only two CFOAs , 1998 .

[10]  Jiun-Wei Horng.  Current conveyors based allpass filters and quadrature oscillators employing grounded capacitors and resistors , 2005, Comput. Electr. Eng..

[11]  Data Ram Bhaskar,et al.  Realization of Novel Linear Sinusoidal VCOs , 2000 .

[12]  S. K. Saha,et al.  Linear voltage controlled oscillator , 1988 .

[13]  Raj Senani,et al.  Realization of a Class of Analog Signal Processing / Signal Generation Circuits: Novel Configurations Using Current Feedback Op-Amps , 1998 .

[14]  S. Saha.  Linear VCO with sine wave output , 1986, IEEE Transactions on Instrumentation and Measurement.

[15]  Hakan Kuntman,et al.  On the oscillator implementations using a single current feedback op-amp , 2002, Comput. Electr. Eng..

[16]  Raj Senani,et al.  On the realization of linear sinusoidal VCOs , 1993 .

[17]  Ahmed M. Soliman.  Current Feedback Operational Amplifier Based Oscillators , 2000 .