Current-Mode Multiphase Sinusoidal Oscillator Using Current Differencing Transconductance Amplifiers |
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Authors: | Worapong Tangsrirat Wason Tanjaroen |
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Affiliation: | (1) Faculty of Engineering, and Research Center for Communications and Information Technology (ReCCIT), King Mongkut’s Institute of Technology Ladkrabang (KMITL), Chalongkrung Rd., Ladkrabang, Bangkok, 10520, Thailand |
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Abstract: | This paper describes a simple current-controlled current-mode multiphase sinusoidal oscillator based on current differencing
transconductance amplifiers (CDTAs) as active components. The proposed oscillator circuit, which employs only one CDTA and
one grounded capacitor for each phase, can generate arbitrary n current-output signals (n being even or odd) equally spaced in phase, all at high output impedance terminals. The oscillation condition and the oscillation
frequency can be controlled electronically and independently through the bias current of the CDTA. The oscillator has low-component
count, low-sensitivity performance, and is highly suitable for monolithic implementation. PSPICE simulation results are given
to confirm the operation of the proposed oscillator. |
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Keywords: | CDTA Multiphase sinusoidal oscillator (MSO) Current-mode circuit |
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