Studies on Selected Topics in Radio Frequency Digital to Analog Converters

Written By Mohammad Reza Sadeghifar
Studies on Selected Topics in Radio Frequency Digital to Analog Converters
  • Publsiher : Linköping University Electronic Press
  • Release : 14 October 2019
  • ISBN : 9176850307
  • Pages : 112 pages
  • Rating : 4/5 from 21 reviews
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Read or download book entitled Studies on Selected Topics in Radio Frequency Digital to Analog Converters written by Mohammad Reza Sadeghifar which was release on 14 October 2019, this book published by Linköping University Electronic Press. Available in PDF, EPUB and Kindle Format. Book excerpt: The network latency in fifth generation mobile technology (5G) will be around one millisecond which is much lower than in 4G technology. This significantly faster response time together with higher information capacity and ultra-reliable communication in 5G technology will pave the way for future innovations in a smart and connected society. This new 5G network should be built on a reasonable wireless infrastructure and 5G radio base-stations that can be vastly deployed. That is, while the electrical specification of a radio base-station in 5G should be met in order to have the network functioning, the size, weight and power consumption of the radio system should be optimized to be able to commercially deploy these radios in a huge network. As the number of antenna elements increases in massive multiple-input multiple-output based radios such as in 5G, designing true multi-band base-station radios, with efficient physical size, power consumption and cost in emerging cellular bands especially in mid-bands (frequencies up to 10~GHz), is becoming a challenge. This demands a hard integration of radio components; particularly the radio's digital application-specific integrated circuits (ASIC) with high-performance energy-efficient multi-band data converters. In this dissertation radio frequency digital-to-analog converter (RF DAC) and semi-digital finite-impulse response (FIR) filter digital-to-analog converter has been studied. Different techniques are used in these structures to improve the transmitter's overall performance. In the RF DAC part, a radio frequency digital-to-analog converter solution is presented, which is capable of monolithic integration into today's digital ASIC due to its digital-in-nature architecture, while fulfills the stringent requirements of cellular network radio base station linearity and bandwidth. A voltage-mode conversion method is used as output stage, and configurable mixing logic is employed in the data path to create a higher frequency lobe and utilize the output signal in the first or the second Nyquist zone and hence achieving output frequencies up to the sample rate. In the semi-digital FIR part, optimization problem formulation for semi-digital FIR digital-to-analog converter is investigated. Magnitude and energy metrics with variable coefficient precision are defined for cascaded digital Sigma-Delta modulators, semi-digital FIR filter, and Sinc roll-off frequency response of the DAC. A set of analog metrics as hardware cost is also defined to be included in semi-digital FIR DAC optimization problem formulation. It is shown that hardware cost of the semi-digital FIR DAC, can be reduced by introducing flexible coefficient precision in filter optimization while the semi-digital FIR DAC is not over-designed either. Different use cases are selected to demonstrate the optimization problem formulations. A combination of magnitude metric, energy metric, coefficient precision and analog metric are used in different use cases of the optimization problem formulation and solved to find out the optimum set of analog FIR taps. Moreover, a direct digital-to-RF converter (DRFC) is presented in this thesis where a semi-digital FIR topology utilizes voltage-mode RF DAC cells to synthesize spectrally clean signals at RF frequencies. Due to its digital-in-nature design, the DRFC benefits from technology scaling and can be monolithically integrated into advance digital VLSI systems. A fourth-order single-bit quantizer bandpass digital Sigma-Delta modulator is used preceding the DRFC, resulting in a high in-band signal-to-noise ratio (SNR). The out-of-band spectrally-shaped quantization noise is attenuated by an embedded semi-digital FIR filter. The RF output frequencies are synthesized by a configurable voltage-mode RF DAC solution with a high linearity performance. A compensation technique to cancel the code-dependent supply current variation in voltage-mode RF DAC for radio frequency direct digital frequency synthesizer is also presented in this dissertation and is studied analytically. The voltage-mode RF DAC and the compensation technique are mathematically modeled and system-level simulation is performed to support the analytical discussion.

Studies on Selected Topics in Radio Frequency Digital to Analog Converters

Studies on Selected Topics in Radio Frequency Digital to Analog Converters
  • Author : Mohammad Reza Sadeghifar
  • Publisher : Linköping University Electronic Press
  • Release Date : 2019-10-14
  • Total pages : 112
  • ISBN : 9176850307
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Summary : The network latency in fifth generation mobile technology (5G) will be around one millisecond which is much lower than in 4G technology. This significantly faster response time together with higher information capacity and ultra-reliable communication in 5G technology will pave the way for future innovations in a smart and connected ...

Radio Frequency Digital to Analog Converters

Radio Frequency Digital to Analog Converters
  • Author : Morteza S Alavi,Jaimin Mehta,Robert Bogdan Staszewski
  • Publisher : Academic Press
  • Release Date : 2016-11-18
  • Total pages : 302
  • ISBN : 9176850307
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Summary : With the proliferation of wireless networks, there is a need for more compact, low-cost, power efficient transmitters that are capable of supporting the various communication standards, including Bluetooth, WLAN, GSM/EDGE, WCDMA and 4G of 3GPP cellular. This book describes a novel idea of RF digital-to-analog converters (RFDAC) and demonstrates ...

Digital Pre distortion of Radio Frequency Digital to Analog Converters in a DOCSIS Application

Digital Pre distortion of Radio Frequency Digital to Analog Converters in a DOCSIS Application
  • Author : Kristofer Dechka
  • Publisher : Unknown
  • Release Date : 2014
  • Total pages : 212
  • ISBN : 9176850307
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Summary : Download or read online Digital Pre distortion of Radio Frequency Digital to Analog Converters in a DOCSIS Application written by Kristofer Dechka, published by which was released on 2014. Get Digital Pre distortion of Radio Frequency Digital to Analog Converters in a DOCSIS Application Books now! Available in PDF, ePub and ...

Radio Frequency Digital to Analog Converter

Radio Frequency Digital to Analog Converter
  • Author : Susan Luschas
  • Publisher : Unknown
  • Release Date : 2003
  • Total pages : 126
  • ISBN : 9176850307
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Summary : Dynamic performance of high speed, high resolution digital-to-analog converters (DACs) is limited by distortion at the data switching instants. Inter-symbol interference (ISI), imperfect timing synchronization and clock jitter are all culprits. A DAC output current controlled by an oscillating waveform is proposed to mitigate the effects of the switching distortion. ...

A Poly phased Time interleaved Radio Frequency Digital to analog Converter Poly TI RF DAC

A Poly phased  Time interleaved Radio Frequency Digital to analog Converter  Poly TI RF DAC
  • Author : Vipul J. Patel
  • Publisher : Unknown
  • Release Date : 2017
  • Total pages : 89
  • ISBN : 9176850307
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Summary : With increasing data rates and new communication standards owing to substantial advancements in digitizing and signal processing capabilities over the last century, the radio spectrum is increasingly becoming a finite and expensive resource. Furthermore, radar systems and 5G communication systems have revealed the need for gigahertz-frequency signal generation with flexible ...

Finite Impulse Response Current Steering Radio Frequency Digital to Analog Converter for Digital IF Transmitter Architecture

Finite Impulse Response Current Steering Radio Frequency Digital to Analog Converter for Digital IF Transmitter Architecture
  • Author : Shahin Mehdizad Taleie
  • Publisher : Unknown
  • Release Date : 2008
  • Total pages : 200
  • ISBN : 9176850307
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Summary : Download or read online Finite Impulse Response Current Steering Radio Frequency Digital to Analog Converter for Digital IF Transmitter Architecture written by Shahin Mehdizad Taleie, published by which was released on 2008. Get Finite Impulse Response Current Steering Radio Frequency Digital to Analog Converter for Digital IF Transmitter Architecture Books now! ...

Radio Frequency Digital To Analog Converters

Radio Frequency Digital To Analog Converters
  • Author : Morteza Alavi,Robert Bogdan Staszewski,Jaimin Mehta
  • Publisher : Academic Press
  • Release Date : 2015-09-01
  • Total pages : 284
  • ISBN : 9176850307
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Summary : "Advanced Radio-Frequency Digital-to-Analog Converters" provides a comprehensive resource that coincides with the proliferation of wireless networks. With this proliferation, there is a need for more compact, low-cost, power efficient transceivers that are capable of supporting various communication standards, including GSM, WLAN, Bluetooth, GNSS, FM, and 4G of 3GPP cellular. This ...

Interleaving Concepts for Digital to Analog Converters

Interleaving Concepts for Digital to Analog Converters
  • Author : Christian Schmidt
  • Publisher : Springer
  • Release Date : 2019-07-19
  • Total pages : 245
  • ISBN : 9176850307
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Summary : Modern complementary metal oxide semiconductor (CMOS) digital-to-analog converters (DACs) are limited in their bandwidth due to technological constraints. These limitations can be overcome by parallel DAC architectures, which are called interleaving concepts. Christian Schmidt analyzes the limitations and the potential of two innovative DAC interleaving concepts to provide the basis ...

Advanced Data Converters

Advanced Data Converters
  • Author : Gabriele Manganaro
  • Publisher : Cambridge University Press
  • Release Date : 2011-11-17
  • Total pages : 212
  • ISBN : 9176850307
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Summary : Need to get up to speed quickly on the latest advances in high performance data converters? Want help choosing the best architecture for your application? With everything you need to know about the key new converter architectures, this guide is for you. It presents basic principles, circuit and system design ...

Performance Optimization Techniques in Analog Mixed Signal and Radio Frequency Circuit Design

Performance Optimization Techniques in Analog  Mixed Signal  and Radio Frequency Circuit Design
  • Author : Fakhfakh, Mourad
  • Publisher : IGI Global
  • Release Date : 2014-10-31
  • Total pages : 464
  • ISBN : 9176850307
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Summary : Improving the performance of existing technologies has always been a focal practice in the development of computational systems. However, as circuitry is becoming more complex, conventional techniques are becoming outdated and new research methodologies are being implemented by designers. Performance Optimization Techniques in Analog, Mix-Signal, and Radio-Frequency Circuit Design features ...

Smart and Flexible Digital to Analog Converters

Smart and Flexible Digital to Analog Converters
  • Author : Georgi Radulov,Patrick Quinn,Hans Hegt,Arthur H.M. van Roermund
  • Publisher : Springer Science & Business Media
  • Release Date : 2011-01-07
  • Total pages : 310
  • ISBN : 9176850307
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Summary : Smart and Flexible Digital-to-Analog Converters proposes new concepts and implementations for flexibility and self-correction of current-steering digital-to-analog converters (DACs) which allow the attainment of a wide range of functional and performance specifications, with a much reduced dependence on the fabrication process. DAC linearity is analysed with respect to the accuracy ...

Design Modeling and Testing of Data Converters

Design  Modeling and Testing of Data Converters
  • Author : Paolo Carbone,Sayfe Kiaei,Fang Xu
  • Publisher : Springer Science & Business Media
  • Release Date : 2013-10-05
  • Total pages : 430
  • ISBN : 9176850307
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Summary : This book presents the a scientific discussion of the state-of-the-art techniques and designs for modeling, testing and for the performance analysis of data converters. The focus is put on sustainable data conversion. Sustainability has become a public issue that industries and users can not ignore. Devising environmentally friendly solutions for ...

Radio Frequency Electronics

Radio Frequency Electronics
  • Author : Jon B. Hagen
  • Publisher : Cambridge University Press
  • Release Date : 1996-11-13
  • Total pages : 358
  • ISBN : 9176850307
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Summary : A comprehensive introduction to the basic concepts and key circuits of radio frequency systems....

Official Gazette of the United States Patent and Trademark Office

Official Gazette of the United States Patent and Trademark Office
  • Author : United States. Patent and Trademark Office
  • Publisher : Unknown
  • Release Date : 2001
  • Total pages : 212
  • ISBN : 9176850307
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Summary : Download or read online Official Gazette of the United States Patent and Trademark Office written by United States. Patent and Trademark Office, published by which was released on 2001. Get Official Gazette of the United States Patent and Trademark Office Books now! Available in PDF, ePub and Kindle....

Multi Mode Multi Band RF Transceivers for Wireless Communications

Multi Mode   Multi Band RF Transceivers for Wireless Communications
  • Author : Gernot Hueber,Robert Bogdan Staszewski
  • Publisher : John Wiley & Sons
  • Release Date : 2011-04-04
  • Total pages : 608
  • ISBN : 9176850307
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Summary : Summarizes cutting-edge physical layer technologies for multi-mode wireless RF transceivers. Includes original contributions from distinguished researchers and professionals. Covers cutting-edge physical layer technologies for multi-mode wireless RF transceivers. Contributors are all leading researchers and professionals in this field....