CONTINUOUS TIME DELTA-SIGMA MODULATOR WITH A TIME INTERLEAVED QUANTIZATION FUNCTIONA wide band continuous time delta-sigma modulator implements a time interleaved quantization processing operation. The modulator may provide for an inherent finite impulse response filtering in the feedback loop. Additionally,...
Delta- and theta-function in continuous models 来自 ACM 喜欢 0 阅读量: 20 作者: HohmannR 摘要: No abstract available. 关键词: analytical integration before simulation examples from mechanics iteration method for margin value problem thetafunction in ACSL 被引量: 2 年份: 1994 ...
Continuous-time sigma-delta (CT-Sigma Delta) modulators have recently received great attention in the academia as well as in the industry. Despite the improved understanding of the operation of CT-Sigma Delta modulators, the problem due to excess loop delay that arises from timing mismatch and pa...
A delta function is a mathematical representation of a kick that lasts for no time and has energy of exactly 1. It is an idealized function that can be defined as the limit of a rectangular pulse function with area 1 as it halves in width and doubles in height. ...
Continuous-Time Sigma-Delta Modulation for A/D Conversion in RadioReceiversdescribes the design and theory of continuous-time sigma-delta modulators for analog-to-digital conversion in radio receivers. The book's main focus is on dynamic range, linearity and power efficiency aspects of sigma-delta ...
1 The second function of the ADC is to discretize the sampled sig- nal in amplitude. That is, the ADC approximates the amplitude of each sample with one of a finite number of possible values. Because the output of the ADC can take on only a finite num- ber of possible values, the ...
This paper presents a multi-bit, continuous time delta-sigma modulator with 20 MHz bandwidth implemented in 65nm CMOS for cellular communication. The modulator features a third order, single loop filter and a 4-bit internal quantizer operating at 640 MHz. The DACs are resistive for lower thermal...
This paper presents a sixth-order continuous-time bandpass sigma-delta modulator (SDM) for analog-to-digital conversion of intermediate-frequency signals. An important aspect in the design of this SDM is the stability analysis using the describing function method. The key to the analysis is the ...
In subject area: Engineering The expression δ() is the Dirac delta function, which is a special defined function that is zero everywhere except at the origin, where it is singular and has the integral property ∫−ddf(x)δ(x−ξ)dx=f(ξ) for any parameter d and continuous function ...
where the non-ideal effects are embedded in the loop filter transfer function. This leads to a more difficult design process for the loop filter circuit, solved through the use of an optimization procedure based on genetic algorithms. Simulations of the electrical circuit show that it is capable...