Open AccessCompact electronically tunable quadrature oscillator using single voltage differencing gain amplifier (VDGA) and all grounded passive elements
Author(s) -
Orapin Channumsin,
Worapong Tangsrirat
Publication year - 2017
Publication title -
turkish journal of electrical engineering and computer sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.225
H-Index - 30
eISSN - 1303-6203
pISSN - 1300-0632
DOI - 10.3906/elk-1607-11
Subject(s) - quadrature (astronomy) , operational transconductance amplifier , transconductance , amplifier , vackář oscillator , oscillation (cell signaling) , voltage controlled oscillator , voltage , delay line oscillator , electronic engineering , cmos , physics , electrical engineering , operational amplifier , optoelectronics , engineering , transistor , biology , genetics
This work deals with the design of a compact electronically tunable sinusoidal quadrature oscillator. The proposed quadrature oscillator is designed with a single voltage differencing gain amplifier (VDGA) and all the three grounded passive elements. Its oscillation condition and oscillation frequency can be tuned independently by means of the VDGA transconductance gains. The proposed oscillator also provides the explicit quadrature voltage outputs of almost equal magnitude and low active and passive sensitivity figures. The performance of the oscillator has been demonstrated by PSPICE simulations based on TSMC 0.35-μm CMOS technology.
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