CMOS design of a multibit bandpass continuous-time sigma delta modulator running at 1.2 GHz

Benabid, Sorore; Aghdam, Esmaeil Najafi; Bénabès, Philippe; Guessab, Sylvie; Kielbasa, R.

doi:10.1109/iccdcs.2004.1393352

Cited by 8 publications

(8 citation statements)

References 11 publications

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“…The sigma-delta modulator used in this paper is a third order continuous time bandpass modulator with a 3-bit quantizer using the classic cascaded topology as shown in Fig. 2 (the purpose of this paper is not the topology of the analog modulator; some more adequate topologies can be found in [15] or [16]). …”

Section: Theorymentioning

confidence: 99%

A self-calibration scheme for extended frequency-band-decomposition sigma-delta ADC

Bénabès

Beydoun

2009

Analog Integr Circ Sig Process

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Frequency-band-decomposition (FBD) is a good candidate to be used to increase the bandwidths of ADC converters based on sigma-delta modulators for software and cognitive radio applications where we need to convert wide bandwidths. Each modulator processes a part of the band of the input signal which is then passed through a digital filter. In the case of large mismatches in the analog modulators, a new solution, called extended frequencyband-decomposition (EFBD) can be used. As an example, this solution can allow for a 4% error in the central frequencies without significant degradation of its performance when the digital processing part is paired with the analog modulators. A calibration of the digital part is thus required to reach these theoretical performances. This paper will focus on a self-calibration algorithm for an EFBD. The algorithm helps minimize the quantization noise of the EFBD and helps to flatten the signal transfer function.

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Section: Theorymentioning

confidence: 99%

A self-calibration scheme for extended frequency-band-decomposition sigma-delta ADC

Bénabès

Beydoun

2009

Analog Integr Circ Sig Process

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“…LC tank resonator structures (Fig. 3.20) are commonly used in the loop filter of bandpass Σ∆ modulators [155][156][157][158][159]. Here, the input voltage is fed through a transconducance amplifier, which drives the LC tank.…”

Section: Lc-resonatormentioning

confidence: 99%

Continuous-Time Sigma-Delta A/D Conversion

2006

Springer Series in Advanced Microelectronics

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The Springer Series in Advanced Microelectronics provides systematic information on all the topics relevant for the design, processing, and manufacturing of microelectronic devices. The books, each prepared by leading researchers or engineers in their f ields, cover the basic and advanced aspects of topics such as wafer processing, materials, device design, device technologies, circuit design, VLSI implementation, and subsystem technology. The series forms a bridge between physics and engineering and the volumes will appeal to practicing engineers as well as research scientists. Microcontrollers in PracticeBy I. Susnea and M. Mitescu 19 Gettering Defects in Semiconductors

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“…They can be designed from their discrete-time counterparts by using the method published in [14]. The sigma-delta modulator used in this paper is a third order continuous time bandpass modulator with a 3-bit quantizer using the classic cascaded topology as shown in Fig 2 (the purpose of this paper is not the topology of the analog modulator ; some more adequate topologies can be found in [16] or [15]). The expected performance of each modulator can be evaluated from the in-band noise power given by [4]:…”

Section: Theorymentioning

confidence: 99%

Extended frequency-band-decomposition sigma–delta A/D converter

Bénabès

Beydoun

Oksman

2009

Analog Integr Circ Sig Process

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Frequency-Band-Decomposition (FBD) is a good candidate to be used to increase the bandwidths of ADC converters based on sigma-delta modulators for software and cognitive radio applications where we need to convert wide bandwidths. Each modulator processes a part of the band of the input signal which is then passed through a digital filter. In the case of large mismatches in the analog modulators, a new solution, called Extended Frequency-Band-Decomposition (EFBD) can be used. As an example, this solution can allow for a 4 % error in the central frequencies without significant degradation of its performance when the digital processing part is paired with the analog modulators. A calibration of the digital part is thus required to reach these theoretical performances. This paper will focus on a self-calibration algorithm for an EFBD. The algorithm helps minimize the quantization noise of the EFBD and helps to flatten the signal transfer function.

show abstract

CMOS design of a multibit bandpass continuous-time sigma delta modulator running at 1.2 GHz

Cited by 8 publications

References 11 publications

A self-calibration scheme for extended frequency-band-decomposition sigma-delta ADC

A self-calibration scheme for extended frequency-band-decomposition sigma-delta ADC

Continuous-Time Sigma-Delta A/D Conversion

Extended frequency-band-decomposition sigma–delta A/D converter

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