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 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.

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  • Author : Mohammad Reza Sadeghifar
  • Publisher : Linköping University Electronic Press
  • Pages : 112 pages
  • ISBN : 9176850307
  • Rating : 4/5 from 21 reviews
CLICK HERE TO GET THIS BOOKStudies on Selected Topics in Radio Frequency Digital to Analog Converters

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 BOOKStudies 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

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 : 18 November 2016
GET THIS BOOKRadio-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

Radio Frequency Digital to Analog Converter

Radio Frequency Digital to Analog Converter
  • Author : Susan Luschas
  • Publisher : Unknown Publisher
  • Release : 04 July 2022
GET THIS BOOKRadio 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

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 Publisher
  • Release : 04 July 2022
GET THIS BOOKA 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

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 BOOKInterleaving 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 (

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 BOOKDesign, 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

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 : 04 April 2011
GET THIS BOOKMulti-Mode / Multi-Band RF Transceivers for Wireless Communications

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.

Design of High-Speed Time-Interleaved Delta-Sigma D/A Converters

Design of High-Speed Time-Interleaved Delta-Sigma D/A Converters
  • Author : Ameya Bhide
  • Publisher : Linköping University Electronic Press
  • Release : 19 August 2015
GET THIS BOOKDesign of High-Speed Time-Interleaved Delta-Sigma D/A Converters

Digital-to-analog (D/A) converters (or DACs) are one the fundamental building blocks of wireless transmitters. In order to support the increasing demand for highdata-ate communication, a large bandwidth is required from the DAC. With the advances in CMOS scaling, there is an increasing trend of moving a large part of the transceiver functionality to the digital domain in order to reduce the analog complexity and allow easy reconguration for multiple radio standards. ?? DACs can t very well into this trend

Signals and Systems using MATLAB

Signals and Systems using MATLAB
  • Author : Luis Chaparro,Aydin Akan
  • Publisher : Academic Press
  • Release : 29 October 2018
GET THIS BOOKSignals and Systems using MATLAB

Signals and Systems Using MATLAB, Third Edition, features a pedagogically rich and accessible approach to what can commonly be a mathematically dry subject. Historical notes and common mistakes combined with applications in controls, communications and signal processing help students understand and appreciate the usefulness of the techniques described in the text. This new edition features more end-of-chapter problems, new content on two-dimensional signal processing, and discussions on the state-of-the-art in signal processing. Introduces both continuous and discrete systems early, then

Open Radio Access Network (O-RAN) Systems Architecture and Design

Open Radio Access Network (O-RAN) Systems Architecture and Design
  • Author : Wim Rouwet
  • Publisher : Academic Press
  • Release : 01 March 2022
GET THIS BOOKOpen Radio Access Network (O-RAN) Systems Architecture and Design

Open Radio Access Network (O-RAN) Systems Architecture and Design gives a jump-start to engineers developing O-RAN hardware and software systems, providing a top-down approach to O-RAN systems design. It gives an introduction into why wireless systems look the way they do today before introducing relevant O-RAN and 3GPP standards. The remainder of the book discusses hardware and software aspects of O-RAN system design, including dimensioning and performance targets. Presents O-RAN and 3GPP standards Provides a top-down approach to O-RAN systems

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 Publisher
  • Release : 04 July 2022
GET THIS BOOKDesign 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

Advances in Analog and RF IC Design for Wireless Communication Systems

Advances in Analog and RF IC Design for Wireless Communication Systems
  • Author : Gabriele Manganaro,Domine M W Leenaerts
  • Publisher : Academic Press
  • Release : 13 May 2013
GET THIS BOOKAdvances in Analog and RF IC Design for Wireless Communication Systems

Advances in Analog and RF IC Design for Wireless Communication Systems gives technical introductions to the latest and most significant topics in the area of circuit design of analog/RF ICs for wireless communication systems, emphasizing wireless infrastructure rather than handsets. The book ranges from very high performance circuits for complex wireless infrastructure systems to selected highly integrated systems for handsets and mobile devices. Coverage includes power amplifiers, low-noise amplifiers, modulators, analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), and even