%0 Conference Paper %B IEEE International Symposium on Circuits and Systems, 2007. ISCAS 2007 %D 2007 %T Quadrature VCOs Based on Coupled PLLs %A Bevilacqua, A. %A Sandner, C. %A Gerosa, A. %A Neviani, A. %K 0.13 micron %K CMOS digital integrated circuits %K coupled PLL %K digital CMOS technology %K dual-mode quadrature VCO %K phase locked loops %K quadrature signal generation %K voltage-controlled oscillators %B IEEE International Symposium on Circuits and Systems, 2007. ISCAS 2007 %P 2140 -2143 %R 10.1109/ISCAS.2007.378596