New sinusoidal oscillator configurations using operational transresistance amplifier

2019 ◽  
Vol 47 (5) ◽  
pp. 666-685 ◽  
Author(s):  
Gurumurthy Komanapalli ◽  
Rajeshwari Pandey ◽  
Neeta Pandey
Keyword(s):  
Operational Transresistance Amplifier ◽  
Sinusoidal Oscillator

scholarly journals Operational Transresistance Amplifier-Based Multiphase Sinusoidal Oscillators

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Rajeshwari Pandey ◽  
Neeta Pandey ◽  
Mayank Bothra ◽  
Sajal K. Paul
Keyword(s):  
Single Phase ◽  
Phase Shifter ◽  
Active Element ◽  
Automatic Gain Control ◽  
Gain Control ◽  
The Third ◽  
Operational Transresistance Amplifier ◽  
Alternative Approach ◽  
Sinusoidal Oscillator ◽  
Tunable Oscillator

Multiphase sinusoidal oscillator circuits are presented which utilize Operational Transresistance Amplifier (OTRA) as the active element. The first circuit producesnodd-phase oscillations of equal amplitudes and equally spaced in phase. The second circuit is capable of producingnodd- or even- phase oscillations equally spaced in phase. An alternative approach is discussed in the third circuit, which utilizes a single-phase tunable oscillator circuit which is used to inject signals into a phase shifter circuits. An automatic gain control (AGC) circuit has been implemented for the second and third circuit. The circuits are simple to realize and have a low component count. PSPICE simulations have been given to verify the theoretical analysis. The experimental outcome corroborates the theoretical propositions and simulated results.

Design and realisation of a fractional-order sinusoidal oscillator

2020 ◽  
Vol 14 (8) ◽  
pp. 1173-1184
Author(s):  
İbrahim Ethem Saçu ◽  
Mustafa ALÇI
Keyword(s):  
Fractional Order ◽  
Sinusoidal Oscillator

Dual-Mode Quadrature Oscillator Using Current Follower Transconductance Amplifiers for GMI Sensors

2013 ◽  
Vol 712-715 ◽  
pp. 1886-1890
Author(s):  
Lei Zhang ◽  
Zhong Ming Pan
Keyword(s):  
Dual Mode ◽  
Transconductance Amplifier ◽  
Current Voltage ◽  
Sinusoidal Oscillator ◽  
Current Follower ◽  
Condition Of Oscillation ◽  
Transconductance Amplifiers ◽  
Passive Sensitivity ◽  
Quadrature Oscillators ◽  
Circuit Configuration

For designing GMI sensors, realization of current/voltage-mode (dual-mode) quadrature sinusoidal oscillator with the employment of current follower transconductance amplifier (CFTA) as the active component is presented. The proposed circuit configuration comprising two CFTAs, one grounded resistor and two grounded capacitors can simultaneously provide two explicit quadrature output currents and two quadrature output voltages. Moreover, the proposed circuit topology enjoys the advantage of independent control of the condition of oscillation and frequency of oscillation and good active and passive sensitivity performances. The functionality of the proposed quadrature oscillators has been verified by PSPICE simulations.

scholarly journals New Topologies of Lossless Grounded Inductor Using OTRA

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Rajeshwari Pandey ◽  
Neeta Pandey ◽  
Sajal K. Paul ◽  
A. Singh ◽  
B. Sriram ◽  
...  
Keyword(s):  
Theoretical Analysis ◽  
Experimental Results ◽  
Pspice Simulation ◽  
Operational Transresistance Amplifier

Two alternate topologies of lossless grounded inductor have been proposed using operational transresistance amplifier (OTRA). Three applications using the proposed inductors are also included. PSPice simulation and experimental results have been included to demonstrate the performance and verify the theoretical analysis.

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