Signal processing methods have changed substantially over the last several decades. In modern applications, an increasing number of functions is being pushed forward to sophisticated software algorithms, leaving only delicate finely-tuned tasks for the circuit level. Sampling theory, the gate to the digital world, is the key enabling this revolution, encompassing all aspects related to the conv...

We consider analog to digital (A/D) conversion, based on the quantization of coefficients obtained via the projection of a continuous time signal over a set of basis functions. The framework presented here for A/D conversion is motivated by the sampling of an input signal in domains which may lead to significantly less demanding A/D conversion characteristics, i.e., lower sampling rates and low...

This paper presents a 24-bit 5.0 GHz ultrahigh-speed direct digital synthesizer (DDS) with direct digital modulation capabilities used in a pulse compression radar. This design represents the first DDS RFIC in over-GHz output frequency range with direct digital modulation capabilities. It adopts a ROM-less architecture and has the capabilities for direct digital frequency and phase modulation w...

SABYASACHI CHAKRABORTY Sr. Lecturer and Head of the Department Department of Computer Science /IT Icfai University-Sikkim. Sikkim, India. Abstract— In this paper first the traditional digital to analog conversion is discussed with circuit analysis. The concepts like propagation delay, inertial delay, step size are discussed. In the later part, the fuzzy logic circuit interface between digital t...

he ever-dropping cost of Very Large Scale Integrated (VLSI) circuits allows many analog functions to be done digitally. However, the real world still is, and will always continue to be, a fundamentally analog place. Thus, the analog signal of interest is translated into a format that a digital computer can utilize. This translation is the function of an Analog to Digital Converter (ADC). After ...

The article presents the analysis results of features analog-to-digital conversion a continuous value as duration input signal into output digital code. Converters that work according to this principle are known analog-code converters, and is type well-known pulse-width modulation (PWM). Information different nature can be used analog information, for example, an optical, electrical or sound si...