On the systematic synthesis of OTA-based Wien oscillators |
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Authors: | Yong-an Li |
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Affiliation: | School of Physics and Electronic Engineering, Xianyang Normal University, Xianyang 712000, China |
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Abstract: | A NAM expansion method for systematic synthesis of OTA-based Wien oscillators is given. Moreover, the NAM expansion method for four different classes of the oscillators is considered. The class I oscillators employ three OTAs, the class II oscillators employ four OTAs, the class III oscillators employ five OTAs, and the class IV oscillators employ six OTAs. Each class has 32 different forms, resulting in 128 Wien oscillators using OTAs. Having used grounded capacitors, the circuits are easy to be integrated and their parameters can be tuned electronically through tuning bias currents of the OTAs. The MULTISIM simulation results have been included to support the generation method. |
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Keywords: | Wien oscillator OTA Nullor–mirror element Nodal admittance matrix expansion |
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