DocumentCode :
3747408
Title :
Sinusoidal quadrature oscillator using voltage differencing gain amplifiers (VDGAs)
Author :
Orapin Channumsin;Worapong Tangsrirat
Author_Institution :
Faculty of Engineering, Rajamangala University of Technology Isan, KhonKaen Campus, Srichan Road, Muang, KhonKaen 40000, Thailand
fYear :
2015
Firstpage :
118
Lastpage :
121
Abstract :
An alternative topology of voltage-mode sinusoidal quadrature oscillator based on VDGA (voltage differencing gain amplifier) is proposed. The proposed quadrature oscillator consisting of two VDGAs and two grounded capacitors with the absence of the external passive resistors can generate two sinusoidal output voltages with 90° phase difference. The oscillation condition and oscillation frequency (ωo) of the circuit are controllable independently through the transconductance gains of the VDGAs. Moreover, the proposed circuit configuration requires minimum of active and passive components, and also exhibits low sensitivity performance. Computer simulation results using PSPICE are performed to confirm the theory.
Keywords :
"Oscillators","Transconductance","Frequency control","CMOS integrated circuits","Capacitors","Filtering theory","Voltage control"
Publisher :
ieee
Conference_Titel :
Information Technology and Electrical Engineering (ICITEE), 2015 7th International Conference on
Type :
conf
DOI :
10.1109/ICITEED.2015.7408925
Filename :
7408925
Link To Document :
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