A systematic realization of third-order quadrature oscillator with controllable amplitude |
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| Affiliation: | 1. Dept. of Electronic Engineering, Ming Chi University of Technology, Taiwan, ROC;2. Dept. of Electronic Engineering, National Taipei University of Technology, Taiwan, ROC;1. Department of Telecommunication Engineering, Federal University of Technology, Minna, Niger State, Nigeria;2. Department of Mechatronics Engineering, Federal University of Technology, Minna, Niger State, Nigeria;3. Department of Electrical Electronics Engineering Nigerian Turkish Nile University, Abuja, Nigeria;4. Department of Mechatronics Engineering, Kulliyah of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia;1. Department of Naval Architecture and Marine Engineering, Bandirma Onyedi Eylul University, Balikesir 10200, Turkey;2. Department of Electrical and Electronics Engineering, Istanbul University, Avcılar, Istanbul, Turkey;3. Department of Electronics and Communications Engineering, Dogus University, Acibadem, Kadikoy, Istanbul, Turkey;1. Akdeniz University, Department of Informatics, 07070 Konyaalti, Antalya, Turkey;2. Pamukkale University, Department of Electrical and Electronics Engineering, 20160 Kinikli, Denizli, Turkey;1. Department of Engineering Education, Faculty of Industrial Education and Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand;2. Department of Microelectronics, Brno University of Technology, Technická 10, Brno, Czech Republic;3. Faculty of Biomedical Engineering, Czech Technical University in Prague, nám. Sítná 3105, Kladno, Czech Republic |
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| Abstract: | A systematic realization of third-order quadrature oscillator using a voltage-mode non-inverting lowpass filter and a voltage-mode inverting lossless feedback integrator is presented in this paper. The proposed circuit consists of two multiple-output differential voltage current conveyor transconductance amplifiers (MO-DVCCTAs), two grounded resistors and three grounded capacitors. The new circuit provides three quadrature voltage outputs, two high-impedance quadrature current outputs, and one high-impedance current output with controllable amplitude, simultaneously. When the input bias current of the first MO-DVCCTA is a modulating signal, the circuit can generate amplitude modulation or amplitude shift keying signals. The condition of oscillation and the frequency of oscillation can be controlled independently through grounded resistors. The proposed circuit only uses grounded capacitors and grounded resistors, which can be easily implemented as an integrated circuit. The experimental results and H-Spice simulation results are given to confirm the theoretical analysis. |
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| Keywords: | Sinusoidal oscillator Voltage-mode Current-mode Modulating signal Current conveyor |
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