Ted Fernandez

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In the push-push oscillator, the circuit symmetry enables, through a suitable choice of terminating impedances, an output frequency that is twice the oscillation fundamental frequency. The main difficulty is the complexity of the design, for which there is a lack of specific simulation tools. Here, a harmonic-balance technique is presented, allowing the(More)
An experimental study of nonlinear and memory effects at device and power-amplifier circuit level is presented in this paper. Effects produced by the device itself have been isolated from those caused by the introduction of particular biasing and matching networks in the power amplifier design. The influence of biasing and matching network topologies over(More)
This paper presents an inductive load driver. The circuit is realised in a standard low-voltage CMOS process. As the coil free-wheels when the driver is switched off, the circuit clamps the output voltage at 100 mV above the power supply. Hence no high-voltage technology or high-voltage tolerant circuit is required. 73 drivers are integrated in an ASIC,(More)
Energy storage can provide many benefits to the electric grid of the United States of America. With recent pushes to stabilize renewable energy and implement a Smart Grid, battery technology can play a pivotal role in the advancement of energy storage of the grid. While there are many types of batteries that have been brought to market in recent years, four(More)
This paper presents an inductive load driver. The circuit is realized in a standard low-voltage CMOS process: as the coil freewheels when the driver is switched off, the circuit clamps the output voltage at 100 mV above the power supply. Hence, no high-voltage technology or high-voltage tolerant circuit is required. 73 drivers are integrated in an ASIC,(More)
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