| 期刊全稱 | Bandpass Sigma Delta Modulators | | 期刊簡(jiǎn)稱 | Stability Analysis, | | 影響因子2023 | Jurgen Engelen,Rudy Plassche | | 視頻video | http://file.papertrans.cn/181/180557/180557.mp4 | | 圖書(shū)封面 |  | | 影響因子 | Sigma delta modulation has become a very useful and widelyapplied technique for high performance Analog-to-Digital (A/D)conversion of narrow band signals. Through the use of oversampling andnegative feedback, the quantization errors of a coarse quantizer aresuppressed in a narrow signal band in the output of the modulator.Bandpass sigma delta modulation is well suited for A/D conversion ofnarrow band signals modulated on a carrier, as occurs in communicationsystems such as AM/FM receivers and mobile phones. .Due to the nonlinearity of the quantizer in the feedback loop, a sigmadelta modulator may exhibit input signal dependent stabilityproperties. The same combination of the nonlinearity and the feedbackloop complicates the stability analysis. In .Bandpass Sigma Delta..Modulators., the describing function method is used to analyzethe stability of the sigma delta modulator. The linear gain modelcommonly used for the quantizer fails to predict small signalstability properties and idle patterns accurately. .In .Bandpass Sigma Delta Modulators. an improved model for thequantizer is introduced, extending the linear gain model with a phaseshift. Analysis shows that the phase shift of a s | | Pindex | Book 1999 |
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