Open AccessOperational Transresistance Amplifier-Based Multiphase Sinusoidal Oscillators
Author(s) -
Rajeshwari Pandey,
Neeta Pandey,
Mayank Bothra,
Sajal K. Paul
Publication year - 2011
Publication title -
journal of electrical and computer engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.318
H-Index - 25
eISSN - 2090-0155
pISSN - 2090-0147
DOI - 10.1155/2011/586853
Subject(s) - electronic circuit , amplifier , phase (matter) , operational amplifier , electronic engineering , electronic component , electronic oscillator , electrical element , phase response , computer science , control theory (sociology) , electrical engineering , engineering , physics , cmos , voltage , voltage controlled oscillator , control (management) , quantum mechanics , artificial intelligence
Multiphase sinusoidal oscillator circuits are presented which utilize Operational Transresistance Amplifier (OTRA) as the active element. The first circuit produces n odd-phase oscillations of equal amplitudes and equally spaced in phase. The second circuit is capable of producing n odd- 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
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