scholarly journals Multiple-Input Universal Filter and Quadrature Oscillator Using Multiple-Input Operational Transconductance Amplifiers

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 56253-56263
Author(s):  
Montree Kumngern ◽  
Fabian Khateb ◽  
Tomasz Kulej ◽  
Costas Psychalinos
Keyword(s):  
Universal Filter ◽  
Quadrature Oscillator ◽  
Operational Transconductance Amplifiers ◽  
Multiple Input ◽  
Transconductance Amplifiers

scholarly journals Current-Mode Third-Order Quadrature Oscillator Using CDTAs

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
Jiun-Wei Horng
Keyword(s):  
Theoretical Analysis ◽  
Phase Difference ◽  
Oscillation Frequency ◽  
Current Mode ◽  
Third Order ◽  
Quadrature Oscillator ◽  
Oscillation Condition ◽  
Transconductance Amplifiers ◽  
Simulation Results ◽  
A Current

This paper describes a current-mode third-order quadrature oscillator based on current differencing transconductance amplifiers (CDTAs). Outputs of two current-mode sinusoids with90°phase difference are available in the quadrature oscillator circuit. The oscillation condition and oscillation frequency are orthogonal controllable. The proposed circuit employs only grounded capacitors and is ideal for integration. Simulation results are included to confirm the theoretical analysis.

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