Abstract: A low-power pulse generator is provided for use in ultra-wideband (UWB) systems. In one embodiment, the UWB pulse generator includes four pulse generators, such as digital triangular pulse generators, that generate Gaussian-like pulses of alternating polarity at different time offsets. The resulting four Gaussian-like pulses are combined to generate a UWB pulse that approximates the fifth derivative of a Gaussian pulse. In other embodiments, different-order derivatives of a Gaussian pulse may be approximated by combining different numbers of Gaussian-like pulses. The UWB pulse generator is preferably implemented with CMOS circuitry to limit power consumption.

Abstract: Devices and methods for improving the dynamic range and signal-to-noise ratio of image sensors. Complementary Metal Oxide Semiconductor (CMOS) image sensors that use at least one CMOS image pixel circuit, and methods that the CMOS image sensor integrated circuit is configured to perform.

Abstract: Methods and devices for a multi-mode CMOS image sensor are presented. In one respect, the methods can provide varying at least one of a plurality of control signals of a pixel of a CMOS image sensor, where the pixel is operable in a linear mode, logarithmic mode, and floating point mode. The pixel may include a plurality of transistors and a photodetector coupled thereto. Using a plurality of control signals, the mode of the pixel can change between a linear mode, a logarithmic mode, and a floating point mode.

Abstract: A low-power pulse generator is provided for use in ultra-wideband (UWB) systems. In one embodiment, the UWB pulse generator includes four pulse generators, such as digital triangular pulse generators, that generate Gaussian-like pulses of alternating polarity at different time offsets. The resulting four Gaussian-like pulses are combined to generate a UWB pulse that approximates the fifth derivative of a Gaussian pulse. In other embodiments, different-order derivatives of a Gaussian pulse may be approximated by combining different numbers of Gaussian-like pulses. The UWB pulse generator is preferably implemented with CMOS circuitry to limit power consumption.