Derivation of Oscillators from Biquadratic Band Pass Filters Using Circuit Transformations
1
Department of Electronic Engineering, National Kaohsiung University of Applied Science, Kaohsiung 807, Taiwan
2
Department of Optometry, Chung Hwa University of Medical Technology, Tainan 717, Taiwan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2014, 4(4), 482-492; https://doi.org/10.3390/app4040482
Received: 26 July 2014 / Revised: 12 September 2014 / Accepted: 22 September 2014 / Published: 29 September 2014
(This article belongs to the Special Issue Feature Papers)
Network transformations are the techniques to obtain new functional schemes from available circuits. They are systematic methodologies, since each transformation technique can be applied to many circuits to obtain the desired functions or characteristics. A convenient network transformation method, exploiting different circuit transformations, for deriving linear sinusoidal oscillators from biquadratic band pass filters is proposed. This method with generality can be applied to any band pass filter. The oscillation frequency of the new obtained oscillator is identical to the center frequency of the original band pass filter, and the useful properties of the selected band pass filter can be retained. Two examples are illustrated to confirm the feasibility of the proposed approach. The workability of the obtained oscillators is verified with PSPICE simulations.
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MDPI and ACS Style
Wang, H.-Y.; Tran, H.-D.; Nguyen, Q.-M.; Yin, L.-T.; Liu, C.-Y. Derivation of Oscillators from Biquadratic Band Pass Filters Using Circuit Transformations. Appl. Sci. 2014, 4, 482-492.
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