The following publications are possibly variants of this publication:
- Voltage-Mode Multifunction Biquad Filter and Its Application as Fully-Uncoupled Quadrature Oscillator Based on Current-Feedback Operational AmplifiersSan-fu Wang, Hua-Pin Chen, Yi-Tsen Ku, Ming-Xiu Zhong. sensors, 20(22):6681, 2020. [doi]
- Voltage-Mode Biquad Filter Using Four OTAs and Its Application in Quadrature Oscillator with Noninteractive Control of the Oscillation Condition and FrequencySan-fu Wang, Hua-Pin Chen, Yitsen Ku, Chia Ling Lee. jcsc, 31(4), 2022. [doi]
- Versatile Tunable Voltage-Mode Biquadratic Filter and Its Application in Quadrature OscillatorSan-fu Wang, Hua-Pin Chen, Yi-Tsen Ku, Yi-Chun Lin. sensors, 19(10):2349, 2019. [doi]