A new technique for designing an LC bandpass DeltaSigma modulator is presented. This method is based on pulse shaping of a DAC output signal such that one can realize a desired (arbitrary) loop transfer function. Especially for higher-order modulators where extra LC sections are added, sufficient number of parameters are provided in the feedback loop. It is shown that by creating more degrees o...

A distnbuted amplifier based 5-tap tramversai filter using MESFET implementation of the Gilbert Cell as the tap weights has been designed for use as a fractonally spilfed adjustable equaluer in high speed optical c~mmunication systems. The effective tramconductance of the Gilbert Celi can be adjusted h m negative to positive values and therefore the transversal filter designed has adjustable po...

The charge sharing effect in pixelated CdZnTe (CZT) detectors with a common anode steering grid has been studied. The impact on energy resolution of weighting potential cross-talk and ballistic deficit due to cathode signal shaping has been investigated. A detailed system modeling package considering charge induction, electronic noise, pulse shaping, and ASIC triggering procedures has been deve...

18 LLE Review, Volume 69 Advances in laser-fusion technology indicate that the temporal profile of the laser pulse applied to laser-fusion targets is important for improving the performance of these targets.1 The OMEGA laser is a 60-beam laser-fusion system capable of producing a total of 30 kJ of ultraviolet (351-nm) energy on target, where the temporal profile of the optical pulse applied to ...

We investigate fixed-point aspects and time-domain ASIC implementations of CD compensation. An optimized implementation gives significant power dissipation reduction for short links, with further reduction if pulse shaping is considered. OCIS codes: (060.1660) Coherent communications; (060.4510) Optical communications

Specified ultra-short pulse waveforms could be synthesized with high-resolution zero-dispersion pulse shaping system. The system and parameters are analyzed and discussed. The pulse shaping system with optimized parameters could resolve the frequency components of ultra-broad bandwidth pulse and prevent the spatial shaping of individual frequency components. The specified waveforms, Meyer wavel...

ABSTRACT Multiple foci are created along the propagation direction of a laser beam using simultaneous spatial and temporal focusing of an ultrafast laser pulse in conjunction with parametric pulse shaping. The pulses are characterized with scanning SEA TADPOLE. The longitudinal and transverse positions of the foci are controlled using phase and amplitude shaping in a 4-f laser pulse shaping sys...

In this paper, the effect of the impulse response of pulse shaping filters on a fractional sampling orthogonal frequency division multiplexing (FS OFDM) system is investigated. FS achieves path diversity with a single antenna through oversampling and subcarrier-based maximal ratio combining (MRC). Though the oversampling increases diversity order, correlation among noise components may deterior...

Mobile communication system uses Quadrature Phase Shift Keying (QPSK) as one of the efficient digital modulation techniques. Pulse-shaping technique plays an important role in digital transmission. Root-Raised Cosine (RRC) and Raised Cosine (RC) filters are two important pulse-shaping filters used in mobile communication system. In this paper we have presented the study of some useful parameter...

In pursuit of optical arbitrary waveform generation (OAWG), line-by-line pulse shapers use dynamic masks that can be modulated at the repetition rate of an input pulse train. The pulse-to-pulse control of the output pulse train with the waveform fidelity provided by line-by-line pulse shaping creates the most arbitrary waveform output possible, OAWG. This thesis studies the theoretical dynamic ...