Systematic synthesis of four OTA-based sinusoidal oscillators
Yongan Li · Journal of Lanzhou University of Technology · 2013
Four nullor-mirror representations for SISO-OTA were given according to the constraint relation of terminals in OTA and nullor-mirror elements.Taking it as a basis,the OTA sinusoidal oscillator was realized by means of admittance matrix extension.The oscillator employs four SISO-OTAs with 16 different forms in all.Because canonical number was used for component quantity,the circuits were easy to be integrated and the condition for oscillation and the frequency of oscillation could separately be tuned electronically through tuning bias currents of the OTA.The result of computer simulation was in agreement with that of its theoretical analysis.