Carlos E. Saavedra

Learn More
—A multiband flexible RF-sampling receiver aimed at software-defined radio is presented. The wideband RF sampling function is enabled by a recently proposed discrete-time mixing downconverter. This work exploits a voltage-sensing LNA preceded by a tunable LC pre-filter with one external coil to demonstrate an RF-sampling receiver with low noise figure (NF)(More)
— A 3 GHz quadrature oscillator has been designed, fabricated, and measured using CMOS 0.18 µm technology. The oscillator uses an active superharmonic coupling technique to generate the quadrature signals. By using two identical LC differential oscillators with a 180° relationship enforced between the second-order harmonics that are present at the(More)