论文信息 - Electronically tunable first-order all pass sections using OTAs

Electronically tunable first-order all pass sections using OTAs

This paper introduces electronically tunable voltage-mode and current-mode first-order all pass sections (APSs) employing operational trans-conductance amplifiers (OTAs) and grounded capacitor. The circuits can realize two all pass characteristics by choosing the current output of the OTA. Additionally, the circuit parameters ω0 and H can be set independently through adjusting the bias currents of the OTAs electronically. Some examples are given together with simulated results by PSPICE.

[1] Sudhanshu Maheshwari. High input impedance VM-APSs with grounded passive elements , 2007, IET Circuits Devices Syst..

[2] J. Horng,et al. First-order allpass filter and sinusoidal oscillators using DDCCs , 2006 .

[3] J. K. Fidler,et al. Electronically tunable dual-OTA second-order sinusoidal oscillators/filters with non-interacting controls: a systematic synthesis approach , 2000 .

[4] Sudhanshu Maheshwari. Novel cascadable current-mode first order all-pass sections , 2007 .

[5] Erhan Hancioglu,et al. Resistorless first-order all-pass filter with electronic tuning , 2008 .

[6] A. Toker,et al. Supplementary all-pass sections with reduced number of passive elements using a single current conveyor , 2001 .

[7] Abdhesh K. Singh,et al. New OTA-C universal current-mode/trans-admittance biquads , 2005, IEICE Electron. Express.

[8] I. A. Khan,et al. Simple first order all-pass section using a single CCII , 2000 .

[9] Sudhanshu Maheshwari. High output impedance current-mode all-pass sections with two grounded passive components , 2008, IET Circuits Devices Syst..