Four phase current-mode sinusoidal quadrature oscillator based on CCCIIs

2013 ◽  
Vol 40 (1) ◽  
pp. 117-124
Author(s):  
Saksit Summart ◽  
Chanchai Thongsopa
Keyword(s):  
Current Mode ◽  
Quadrature Oscillator ◽  
Phase Current

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.

scholarly journals New Current-Mode Oscillators Using a Single Unity-Gain Current-Follower

1995 ◽  
Vol 18 (3) ◽  
pp. 151-157 ◽  
Author(s):  
Muhammad Taher Abuelma'atti
Keyword(s):  
Current Mode ◽  
Quadrature Oscillator ◽  
Current Follower ◽  
Unity Gain ◽  
Simulation Results

A general circuit for realizing current-mode oscillators using a single negative unity-gain current-follower is presented. Using this circuit new oscillators of this class can be discovered systematically. Simulation results obtained from three new circuits are presented. The feasibility of obtaining a quadrature oscillator is investigated.

GROUNDED CAPACITOR CM-APS WITH HIGH OUTPUT IMPEDANCE

2007 ◽  
Vol 16 (04) ◽  
pp. 567-576 ◽  
Author(s):  
SUDHANSHU MAHESHWARI
Keyword(s):  
Current Mode ◽  
Bias Current ◽  
Output Impedance ◽  
Quadrature Oscillator ◽  
Pspice Simulations ◽  
First Order ◽  
External Bias ◽  
High Output Impedance ◽  
High Output

This paper presents a new first order current mode all-pass section (CM-APS) with a grounded capacitor and employing a modified current controlled conveyor. The new circuit with high output impedance is ideal for current-mode cascading and is tunable through an external bias current. The proposed circuit is unique due to its features, not exhibited by any of the available works on the topic. An application of the circuit in realizing a quadrature oscillator is also given. The theory is validated through PSPICE simulations using real device transistors.

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