Maundy, "An improved multiphase sinusoidal oscillator
using current feedback amplifier," International journal of Electronics, vol.
In this contribution, the quadrature sinusoidal oscillator
using voltage differencing current conveyor as active element is presented.
The fundamental block of an observer is derived from recursive discrete time sinusoidal oscillator
. Any periodic sinusoidal signal can be modeled as the output of the sinusoidal oscillator
Hence the topic of quadrature sinusoidal oscillator
design and implementation with better quality is receiving considerable research interest at present.
The proposed simple second-order sinusoidal oscillator
fulfils multiphase requirements (produces 45, 90, 135 and 180 degree phase shifts simultaneously) and can work also as the quadrature type.
The proposed sinusoidal oscillator
has a simple topology and provides voltage-mode and current-mode operation with electronically tunable properties.
The user has the option to use the internal sinusoidal oscillator
set at 100 Hz or to use an external oscillator with frequencies from 50 to 2 KHz.
In , an electronically controllable explicit current-mode sinusoidal oscillator
using single VDTA and in  an electronically controllable fully uncoupled sinusoidal oscillator
using two VDTAs have been presented.
Siripruchyanun, "Voltage-mode quadrature sinusoidal oscillator
with current tunable properties", Analog Integrated Circuits and Signal Processing, vol.
Ansari, "Multi output filter and four phase sinusoidal oscillator
using CMOS DX-MOCCII," International Journal of Electronics, vol.
Fabre, "20-90 MHz current controlled sinusoidal oscillator
", in Proc.
Researches concerning the design of CMOS integrated sinusoidal oscillators
. Editura Politehnica, ISBN 978-606-554-105-4, Timisoara, Romania