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Differential mixer with NMOS/PMOS stack at switching stage
(2012-12-14)
This paper proposes a novel differential mixer topology. The traditional stage of switching is replaced by a stack of NMOS and PMOS transistors combined. A design is given of a 900 MHz down-conversion mixer using a 0.35 ...
A low-voltage low-sensitivity sinusoidal VCO for DPLL realizations
(2004-09-07)
A quasi-sinusoidal linearly tunable OTA-C VCO built with triode-region transconductors is presented. Oscillation upon power-on is ensured by RHP poles associated with gate-drain capacitances of OTA input devices. Since the ...
Low voltage four-quadrant current multiplier: An improved topology for n-well CMOS process
(IEEE, 2007-01-01)
An analog CMOS current multiplier building block for low voltage applications using an n-well process is presented. The multiplier equations are derived to proof its linear characteristic, and then a low voltage design is ...
Ultrasonic material characterization using diffraction-free PVDF receivers
(2010-01-01)
This work describes the use of a large aperture PVDF receiver in the measurement of density of liquids and elastic constants of composite materials. The density measurement of several liquids is obtained with the accuracy ...
A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications
(2002-01-01)
A low-voltage, low-power OTA-C sinusoidal oscillator based on a triode-MOSFET transconductor is here discussed. The classical quadrature model is employed and the transconductor inherent nonlinear characteristic with input ...