high-performance /spl Sigma//spl Delta/ modulators
New Current-mode Universal Filter by a Novel Low Voltage Second Generation Current Conveyor
... and sigma-delta modulators because of the high frequency performance for current and voltage transfer ...pass, high pass and band pass which can adjust the cut-off frequencies ...
6
Force feedback linearization for higher order electromechanical sigma delta modulators
... In this paper, the nonlinearity generated by the electromechanical DAC in the feedback loop and the conversion from displacement to voltage in the forward path has been analysed. An effective linearization scheme is ...
7
State scaling of continuous-time sigma-delta modulators
... In this paper a switched system model was presented that can be used to get an analytical description of the maximum states in dependency of the input amplitude and the filter co- efficients. Based on this model the ...
5
On the synthesis and optimization of cascaded continuous-time Sigma-Delta modulators
... ideal high-pass filter whose order is equal to the overall modulator order, ...stage modulators in the cascade, while maintaining a DC gain of one for the signal transfer ...
5
Time-Mode Signal Quantization for Use in Sigma-Delta Modulators
... In [10], a VCO-based multi-bit quantizer is employed inside a continuous-time ΔΣ loop. This design partially solves the nonlinearity error of the VCO while generating implicit dynamic element matching of the feedback ...
9
Zsim: a non-linear Z-domain simulator for delta-sigma modulators
... Difference equation simulations along with decimation, baseband filtering and post processing are performed to verify the performance of the mod ulator. At this stage, circuit-level impl[r] ...
16
Tonality index of sigma delta modulators: a psychoacoustics model based approach
... ∆-Σ modulators is the existence of tones in their output ...the performance of ∆-Σ modulators, especially in audio ...∆-Σ modulators tends to contain low-level discrete tones, which are ...
5
K-DELTA-1-SIGMA MODULATORS FOR WIDEBAND ANALOG-TO-DIGITAL CONVERSION
... As CMOS technology scales, the transistor speed increases enabling higher speed com- munications and more complex systems. These benefits come at the cost of decreasing inherent device gain, increased transistor leakage ...
253
Sigma Delta Modulators: A Review
... H. This paper discusses the use of a low gain amplifier and a passive switched-capacitor (SC) network to enable the SC integrator function. The method is applied to a delta sigma modulator to achieve ...
9
Stability analysis of high-order sigma-delta modulators
... A new method of analysis for Sigma-Delta modulators based on modeling the nonlinear quantizer with minimum mean square error linearized gains followed by an additive noise source represe[r] ...
25
Conversion of Object Oriented System into Software Product Line with Delta Modeling Abstract Behavioral Specification
... In software development scenario with high variety level, software modeling language and powerful tools to help the implementation process are among of most important things. Design-oriented languages such as ...
6
SPL6 , SPL 12 and SPL 13) contain miR156 cleavage sites and their
... Gandikota et al. (2007) and Kim et al. (2012) demonstrated that miR156-targeted SPL3 prevents early flowering in Arabidopsis. Furthermore, overexpression of miR156 coupled with a reduction in the transcript levels of ...
177
The E6/E7 promoter of human papillomavirus type 16 is activated in the absence of E2 proteins by a sequence-aberrant Sp1 distal element.
... To test the function of the Spl distal element in vivo, we transfected OVEC vectors with wild-type and mutated HPV-16 Spl-binding sites and the SV40 enhancer in close position into SiHa,[r] ...
8
Equal latency contours and auditory weighting functions for the harbour porpoise (Phocoena phocoena)
... Equal loudness contours present the relationship between the received sound pressure level (SPL) and the perceived loudness across frequency (Fletcher and Munson, 1933; Suzuki and Takeshima, 2004). Recently, ...
11
Kinematic control of male Allen's hummingbird wing trill over a range of flight speeds
... We then calibrated for the effects of the wind tunnel. When the tunnel is running, it potentially affects acoustic recordings in four ways: (1) background sound produced by the fan, motor and airflow varies with speed; ...
11
Malignant Lymphoma in the Parasellar Region
... PPL and SPL. Although the most common presentation is a pituitary insufficiency in both of these lymphomas, hypopituitarism is seen more often in PPL (73.7%) than SPL (41.2%), but there is no statistically ...
6
Equal latency contours and auditory weighting functions for the harbour porpoise (Phocoena phocoena)
... The high power LL 1424HP did not fit in the protective box, so this projector was hung in front of the box by ropes attached to its stainless steel cage, at ...m high, ...
11
Sustained expression of fis, the gene coding for the Fis nucleoid associated protein, during the stationary phase of growth in Salmonella enterica
... Moreover, the regulatory role of the Fis protein on fiis and several other genes, including SPl-1 genes hilA and orgA, as well as SPl-2 gene ssrA, during transcription specially during t[r] ...
221
Nonlinear Stability Prediction of Multibit Delta Sigma Modulators for Sinusoidal Inputs
... and rapidly predict stability in multi-bit delta-sigma (Δ-Σ) modulators. Analytical expressions using the nonlinear gains from the concept of modified nonlinearity in control theory are incorporated ...
15
Zsim: a table-based Z-domain simulator for delta-sigma modulators
... Table 3.2: Run time comparison using tables, difference equations, and SPICE 38 Table 4.1: SDR summary for ideal table and difference equation simulations o o o o u o... LIST OF FIGURES.[r] ...
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