Digital Pre Distortion Of Radio Frequency Digital To Analog Converters In A Docsis Application PDF Download
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Author | : Kristofer Dechka |
Publisher | : |
Total Pages | : |
Release | : 2014 |
Genre | : |
ISBN | : |
Download Digital Pre-distortion of Radio Frequency Digital to Analog Converters in a DOCSIS Application Book in PDF, ePub and Kindle
Author | : Susan Luschas |
Publisher | : |
Total Pages | : 126 |
Release | : 2003 |
Genre | : |
ISBN | : |
Download Radio Frequency Digital to Analog Converter Book in PDF, ePub and Kindle
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 zero regions of the oscillating output. This makes the DAC insensitive to switch dynamics and jitter. The architecture has the additional benefit of mixing the DAC impulse response energy to a higher frequency. An image of a low IF input signal can therefore be output directly at a high IF or RF frequency for transmit communications applications. A narrow-band sigma-delta DAC with eight unit elements is chosen to demonstrate the radio frequency digital-to-analog converter (RF DAC) concept. A sigma-delta architecture allows the current source transistors to be smaller since mismatch shaping is employed. Smaller current source transistors have a lower drain capacitance, allowing large high frequency output impedance to be achieved without an extra cascode transistor. Elimination of the cascode reduces transistor headroom requirements and allows the DAC to be built with a 1.8V supply. The RF DAC prototype is targeted to GSM transmit specifications and implemented in 0.1 8ptm CMOS technology. Measured single-tone SFDR is -75dBc, SNR is 52dB, and IMD3 is -70.8dBc over a 17.5MHz bandwidth centered at 942.5MHz. Measured SNR has the predicted dependence on the phase alignment of the data clock and oscillating pulse.
Author | : Martin Clara |
Publisher | : Springer Science & Business Media |
Total Pages | : 297 |
Release | : 2012-12-22 |
Genre | : Technology & Engineering |
ISBN | : 3642312292 |
Download High-Performance D/A-Converters Book in PDF, ePub and Kindle
This book deals with modeling and implementation of high performance, current-steering D/A-converters for digital transceivers in nanometer CMOS technology. In the first part, the fundamental performance limitations of current-steering DACs are discussed. Based on simplified models, closed-form expressions for a number of basic non-ideal effects are derived and tested. With the knowledge of basic performance limits, the converter and system architecture can be optimized in an early design phase, trading off circuit complexity, silicon area and power dissipation for static and dynamic performance. The second part describes four different current-steering DAC designs in standard 130 nm CMOS. The converters have a resolution in the range of 12-14 bits for an analog bandwidth between 2.2 MHz and 50 MHz and sampling rates from 100 MHz to 350 MHz. Dynamic-Element-Matching (DEM) and advanced dynamic current calibration techniques are employed to minimize the required silicon area.
Author | : Frank Ohnhäuser |
Publisher | : Springer |
Total Pages | : 340 |
Release | : 2015-07-01 |
Genre | : Technology & Engineering |
ISBN | : 3662470209 |
Download Analog-Digital Converters for Industrial Applications Including an Introduction to Digital-Analog Converters Book in PDF, ePub and Kindle
This book offers students and those new to the topic of analog-to-digital converters (ADCs) a broad introduction, before going into details of the state-of-the-art design techniques for SAR and DS converters, including the latest research topics, which are valuable for IC design engineers as well as users of ADCs in applications. The book then addresses important topics, such as correct connectivity of ADCs in an application, the verification, characterization and testing of ADCs that ensure high-quality end products. Analog-to-digital converters are the central element in any data processing system and regulation loops such as modems or electrical motor drives. They significantly affect the performance and resolution of a system or end product. System development engineers need to be familiar with the performance parameters of the converters and understand the advantages and disadvantages of the various architectures. Integrated circuit development engineers have to overcome the problem of achieving high performance and resolution with the lowest possible power dissipation, while the digital circuitry generates distortion in supply, ground and substrate. This book explains the connections and gives suggestions for obtaining the highest possible resolution. Novel trends are illustrated in the design of analog-to-digital converters based on successive approximation and the difficulties in the development of continuous-time delta-sigma modulators are also discussed.
Author | : Xicheng Jiang |
Publisher | : Cambridge University Press |
Total Pages | : 417 |
Release | : 2015-07-23 |
Genre | : Technology & Engineering |
ISBN | : 1316368742 |
Download Digitally-Assisted Analog and Analog-Assisted Digital IC Design Book in PDF, ePub and Kindle
Achieve enhanced performance with this guide to cutting-edge techniques for digitally-assisted analog and analog-assisted digital integrated circuit design. • Discover how architecture and circuit innovations can deliver improved performance in terms of speed, density, power, and cost • Learn about practical design considerations for high-performance scaled CMOS processes, FinFet devices and architectures, and the implications of FD SOI technology • Get up to speed with established circuit techniques that take advantage of scaled CMOS process technology in analog, digital, RF and SoC designs, including digitally-assisted techniques for data converters, DSP enabled frequency synthesizers, and digital controllers for switching power converters. With detailed descriptions, explanations, and practical advice from leading industry experts, this is an ideal resource for practicing engineers, researchers, and graduate students working in circuit design.
Author | : |
Publisher | : |
Total Pages | : 264 |
Release | : 2012 |
Genre | : |
ISBN | : |
Download Linearisation of Radio Frequency Upconversion Mixers Through Digital Predistortion in Low Power CMOS Applications Book in PDF, ePub and Kindle
Author | : John G. Proakis |
Publisher | : Wiley-Interscience |
Total Pages | : 760 |
Release | : 2003 |
Genre | : Technology & Engineering |
ISBN | : |
Download Wiley Encyclopedia of Telecommunications, Volume 5 Book in PDF, ePub and Kindle
"Contains 275 tutorial articles focused on modern telecommunications topics. The contents include articles on communication networks, source coding and decoding, channel coding and decoding, modulation and demodulation, optical communications, satellite communications, underwater acoustic communications, radio propagation, antennas, multiuser communications, magnetic storage systems, and a variety of standards"--V.1, p. v.
Author | : John G. Proakis |
Publisher | : |
Total Pages | : 762 |
Release | : 2003 |
Genre | : Telecommunication |
ISBN | : |
Download Wiley Encyclopedia of Telecommunications Book in PDF, ePub and Kindle
Author | : Arthur H.M. van Roermund |
Publisher | : Springer Science & Business Media |
Total Pages | : 291 |
Release | : 2012-11-26 |
Genre | : Technology & Engineering |
ISBN | : 1461445876 |
Download Nyquist AD Converters, Sensor Interfaces, and Robustness Book in PDF, ePub and Kindle
This book is based on the 18 presentations during the 21st workshop on Advances in Analog Circuit Design. Expert designers provide readers with information about a variety of topics at the frontier of analog circuit design, including Nyquist analog-to-digital converters, capacitive sensor interfaces, reliability, variability, and connectivity. This book serves as a valuable reference to the state-of-the-art, for anyone involved in analog circuit research and development.
Author | : Keith Jack |
Publisher | : Newnes |
Total Pages | : 954 |
Release | : 2005 |
Genre | : Business & Economics |
ISBN | : 0750678224 |
Download Video Demystified Book in PDF, ePub and Kindle
This international bestseller and essential reference is the "bible" for digital video engineers and programmers worldwide. This is by far the most informative analog and digital video reference available, includes the hottest new trends and cutting-edge developments in the field.Video Demystified, Fourth Edition is a "one stop" reference guide for the various digital video technologies. The fourth edition is completely updated with all new chapters on MPEG-4, H.264, SDTV/HDTV, ATSC/DVB, and Streaming Video (Video over DSL, Ethernet, etc.), as well as discussions of the latest standards throughout. The accompanying CD-ROM is updated to include a unique set of video test files in the newest formats.