Studies on Selected Topics in Radio Frequency Digital to Analog Converters

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  • Author : Mohammad Reza Sadeghifar
  • Publisher : Linköping University Electronic Press
  • Pages : 112 pages
  • ISBN : 9176850307
  • Rating : /5 from reviews
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Download or Read online Studies on Selected Topics in Radio Frequency Digital to Analog Converters full in PDF, ePub and kindle. this book written by Mohammad Reza Sadeghifar and published by Linköping University Electronic Press which was released on 14 October 2019 with total page 112 pages. We cannot guarantee that Studies on Selected Topics in Radio Frequency Digital to Analog Converters book is available in the library, click Get Book button and read full online book in your kindle, tablet, IPAD, PC or mobile whenever and wherever You Like. 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 : 14 October 2019
GET THIS BOOK Studies on Selected Topics in Radio Frequency Digital to Analog Converters

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

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 : 24 January 2022
GET THIS BOOK A Poly phased Time interleaved Radio Frequency Digital to analog Converter Poly TI RF DAC

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 frequency planning and minimal spurious emissions. Advanced digital-to-analog converters (DACs), along with associated filtering, are critical enablers of these new systems and play a key role in meeting stringent system

Radio Frequency Digital to Analog Converter

Radio Frequency Digital to Analog Converter
  • Author : Susan Luschas
  • Publisher : Unknown
  • Release : 24 January 2022
GET THIS BOOK Radio Frequency Digital to Analog Converter

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. The oscillating waveform should be a multiple (k*fs) of the sampling frequency (f), where k>l. The waveforms can be aligned so that the data switching occurs in the

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Radio Frequency Digital to Analog Converters
  • Author : Morteza S Alavi,Jaimin Mehta,Robert Bogdan Staszewski
  • Publisher : Academic Press
  • Release : 18 November 2016
GET THIS BOOK Radio Frequency Digital to Analog Converters

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 how they can realize all-digital, fully-integrated RF transmitters that support all the current multi-mode and multi-band communication standards. With this book the reader will: Understand the challenges of realizing a

Design of RF IF Analog to Digital Converters for Software Radio Communication Receivers

Design of RF IF Analog to Digital Converters for Software Radio Communication Receivers
  • Author : Bharath Kumar Thandri
  • Publisher : Unknown
  • Release : 24 January 2022
GET THIS BOOK Design of RF IF Analog to Digital Converters for Software Radio Communication Receivers

Software radio architecture can support multiple standards by performing analog-to-digital (A/D) conversion of the radio frequency (RF) signals and running reconfigurable software programs on the backend digital signal processor (DSP). A slight variation of this architecture is the software defined radio architecture in which the A/D conversion is performed on intermediate frequency (IF) signals after a single down conversion. The first part of this research deals with the design and implementation of a fourth order continuous time bandpass

Interleaving Concepts for Digital to Analog Converters

Interleaving Concepts for Digital to Analog Converters
  • Author : Christian Schmidt
  • Publisher : Springer
  • Release : 19 July 2019
GET THIS BOOK Interleaving Concepts for Digital to Analog Converters

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 for a practical implementation: the analog multiplexing DAC (AMUX-DAC) and the frequency interleaving DAC (FI-DAC). He presents analytical and discrete-time models as a theoretical foundation and develops digital signal processing (

Low Power Analog to Digital Converter Design for Software defined Radios

Low Power Analog to Digital Converter Design for Software defined Radios
  • Author : Muhamamd Z. Ali
  • Publisher : Unknown
  • Release : 24 January 2022
GET THIS BOOK Low Power Analog to Digital Converter Design for Software defined Radios

Increasing data requirements have created a frequency shortage that has led to a wider spectrum being used for wireless data transmission. In a transceiver, analog-to-digital converters are rate-limiting steps that require a radio frequency filter in the front end design to operate effectively. Data converters with high bandwidths can eliminate front end filters and provide a power and cost-efficient solution. Data transmission is done digitally and modulated and demodulated via software. This thesis explored the design of high speed, low

Advanced Data Converters

Advanced Data Converters
  • Author : Gabriele Manganaro
  • Publisher : Cambridge University Press
  • Release : 17 November 2011
GET THIS BOOK Advanced Data Converters

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 techniques and associated trade-offs, doing away with lengthy mathematical proofs and providing intuitive descriptions upfront. Everything from time-to-digital converters to comparator-based/zero-crossing ADCs is covered and each topic is introduced

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 : 31 October 2014
GET THIS BOOK Performance Optimization Techniques in Analog Mixed Signal and Radio Frequency Circuit Design

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 recent advances in the engineering of integrated systems with prominence placed on methods for maximizing the functionality of these systems. This book emphasizes prospective trends in the field and is

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 : 07 January 2011
GET THIS BOOK Smart and Flexible Digital to Analog Converters

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 of the DAC unit elements. A classification is proposed of the many different current-steering DAC correction methods. The classification reveals methods that do not yet exist in the open literature.

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 : 05 October 2013
GET THIS BOOK Design Modeling and Testing of Data Converters

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 data conversion designing, modeling and testing is nowadays a requirement that researchers and practitioners must consider in their activities. This book presents the outcome of the IWADC workshop 2011, held in

Advances in Analog and RF IC Design for Wireless Communication Systems

Advances in Analog and RF IC Design for Wireless Communication Systems
  • Author : Gil Engel,Gabriele Manganaro
  • Publisher : Elsevier Inc. Chapters
  • Release : 13 May 2013
GET THIS BOOK Advances in Analog and RF IC Design for Wireless Communication Systems

This chapter discusses the practical application of RF digital-to-analog converters (RF DACs) to communication systems such as cable distribution, wireless communications infrastructure (WIFR) base stations, wireless backhaul, and other such systems. The key specifications that are driving the development of RF DAC technology are reviewed, as are some common radio architectures used to implement those systems. Challenges associated with the design of RF DACs are described, and some trade-offs and possible solutions are discussed. Design considerations of the package and