Title :
Quadrature variable frequency oscillators with unity gain cells
Author :
Sanz, B. M Monge ; Martinez, P. A Martinez ; Pueyo, S. Celma
Author_Institution :
Fac. of Sci., Zaragoza Univ.
Abstract :
Two sinusoidal oscillating structures using unity gain cells and whose controllability is provided by resistive elements are presented in this paper. In both schemes the external capacitances are grounded, thus permitting a frequency range enhancement. One of the structures is also suitable for fully integrated realization, and both can perform as active-R systems. Experimental results that confirm theoretical analysis are included
Keywords :
variable-frequency oscillators; active-R systems; oscillating structures; quadrature variable frequency oscillators; resistive elements; unity gain cells; Capacitance; Controllability; Equations; Filters; Frequency response; Frequency synthesizers; Performance gain; Power dissipation; Proposals; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2003 IEEE 46th Midwest Symposium on
Conference_Location :
Cairo
Print_ISBN :
0-7803-8294-3
DOI :
10.1109/MWSCAS.2003.1562262
