A Design Approach for Power-Optimized Fully Reconfigurable $\Delta \Sigma$ A/D Converter for 4G Radios

Yi, Ke; Craninckx, Jan; Gielen, Georges

doi:10.1109/tcsii.2008.918974

Cited by 30 publications

(1 citation statement)

References 9 publications

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“…All these portable wireless communication systems use receivers to get the information signals from the world. The signals are received by an antenna, and the desired signal band, for example a GSM channel, is selected from the total received spectrum [5]. This frequency band undergoes analog filtering, amplification, frequency modulation and analog-to-digital conversion.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Quantization Noise and Power Estimation of Continuous-Time Delta Sigma Analog-to-Digital Converter Using Test Enable Feature For 4G Radios

Sahu¹,

Chandra²,

Sinha³

2018

IJ-ICT

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<span>This paper presents a novel approach for completely test enable feature and low-voltage delta– sigma analog-to-digital (A/D) converters for cutting edge wireless applications. Oversampling feature of ADCs and DACs is enough to meet the requirement related to in-band and adjacent channel leakage ratio (ACLR) execution of 3G/4G portable radio. The quantization noise which is not filtered in ADC is addressed. We have achieved work power-optimization and test enable feature of oversampling ADC is uses in design and simulation so that the problem of quantization error in continues time sigma delta ADC is solved. This paper suggests support to designer for selecting appropriate topologies with various channel arrangements, number of bits and oversampling issues. A test enable feature of CT A/D is presented introducing the test signal generation (TSG) and the COrdinate Rotation Digital Computer (CORDIC) for evaluating the performance of ADC. This helps in addressing the challenge of 4G and upcoming 5G wireless radio. System level plan of a delta–sigma modulator ADC for 4G radios is studied</span><span lang="IN">.</span>

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Section: Introductionmentioning

confidence: 99%

Analysis of Quantization Noise and Power Estimation of Continuous-Time Delta Sigma Analog-to-Digital Converter Using Test Enable Feature For 4G Radios

Sahu¹,

Chandra²,

Sinha³

2018

IJ-ICT

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ADCs and DACs for Software‐Defined Radio

Steyaert

Palmers

Cornelissens

2010

Multi‐Mode/Multi‐Band RF Transceivers for Wireless Communications

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A design methodology for power‐efficient reconfigurable SC ΔΣ modulators

Porrazzo

Morgado

Bello

et al. 2014

Circuit Theory & Apps

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SUMMARYThis paper presents a methodology to design reconfigurable switched-capacitor (SC) delta-sigma modulators Ms) capable of keeping their corresponding power efficiency figures constant and optimal for a set of resolutions and signal bandwidths. This method is especially suitable for lowbandwidth, medium-to-high resolution specifications, which are common in bio-medical application range. The presented methodology is based on an analytic model of all different contributions to the power dissipation of the ΔΣM. In particular, a novel way to predict the static power dissipated by integrators based on class-A and class-AB OTAs is presented. The power-optimal solution is found in terms of filter order, quantizer resolution, oversampling ratio and capacitor dimensions for a targeted resolution and bandwidth. As the size of the sampling capacitors is crucial to determine power consumption, three approaches to achieve reconfigurability are compared: sizing the sampling capacitors to achieve the highest resolution and keep them constant, change only the first sampling capacitor according to the targeted resolution or program all sampling capacitors to the required resolution. The second approach results in the best trade-off between power efficiency and simplicity. A reconfigurable ΔΣM for bio-medical applications is designed at transistor-level in a 0.18μm CMOS process following the methodology discussed. A comparison between the power estimated by the proposed analytic model and the transistor implementation shows a maximum difference of 17%; validating thus the proposed approach.

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A Design Approach for Power-Optimized Fully Reconfigurable $\Delta \Sigma$ A/D Converter for 4G Radios

Cited by 30 publications

References 9 publications

Analysis of Quantization Noise and Power Estimation of Continuous-Time Delta Sigma Analog-to-Digital Converter Using Test Enable Feature For 4G Radios

Analysis of Quantization Noise and Power Estimation of Continuous-Time Delta Sigma Analog-to-Digital Converter Using Test Enable Feature For 4G Radios

ADCs and DACs for Software‐Defined Radio

A design methodology for power‐efficient reconfigurable SC ΔΣ modulators

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