Title :
Electronically tunable quadrature oscillator with voltage and current outputs
Author :
Knobnob, Boonying ; Kumngern, Montree
Author_Institution :
Electron. & Telecommun. Eng. Dept., Rajamangala Univ. of Technol. Thanyaburi (RMUTT), Phathumthani, Thailand
Abstract :
A new electronically tunable current-mode quadrature oscillator with voltage and current outputs using operational transconductance amplifiers (OTAs) is presented. The proposed oscillator is consisted of two OTAs, two grounded capacitors and one grounded resistor. The oscillation condition and the oscillation frequency are independently controllable. The oscillation frequency can be controlled by a bias current of OTA. PSPICE simulation results which confirm the theoretical analysis are also given.
Keywords :
capacitors; operational amplifiers; oscillators; resistors; OTA; PSPICE simulation; bias current; current output; electronically tunable quadrature oscillator; grounded capacitors; grounded resistor; operational transconductance amplifiers; oscillation condition; oscillation frequency; voltage output; Capacitors; Frequency control; Impedance; Operational amplifiers; Resistors; Signal generators; Transconductance; Tunable circuits and devices; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Electrical Engineering/Electronics Computer Telecommunications and Information Technology (ECTI-CON), 2010 International Conference on
Conference_Location :
Chaing Mai
Print_ISBN :
978-1-4244-5606-2
Electronic_ISBN :
978-1-4244-5607-9
