Download or read book Study of Design for Reliability of RF and Analog Circuits written by Hongxia Tang and published by . This book was released on 2012 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to continued device dimensions scaling, CMOS transistors in the nanometer regime have resulted in major reliability and variability challenges. Reliability issues such as channel hot electron injection, gate dielectric breakdown, and negative bias temperature instability (NBTI) need to be accounted for in the design of robust RF circuits. In addition, process variations in the nanoscale CMOS transistors are another major concern in today's circuits design. An adaptive gate-source biasing scheme to improve the RF circuit reliability is presented in this work. The adaptive method automatically adjusts the gate-source voltage to compensate the reduction in drain current subjected to various device reliability mechanisms. A class-AB RF power amplifier shows that the use of a source resistance makes the power-added efficiency robust against threshold voltage and mobility variations, while the use of a source inductance is more reliable for the input third-order intercept point. A RF power amplifier with adaptive gate biasing is proposed to improve the circuit device reliability degradation and process variation. The performances of the power amplifier with adaptive gate biasing are compared with those of the power amplifier without adaptive gate biasing technique. The adaptive gate biasing makes the power amplifier more resilient to process variations as well as the device aging such as mobility and threshold voltage degradation. Injection locked voltage-controlled oscillators (VCOs) have been examined. The VCOs are implemented using TSMC 0.18 [micrometer] mixed-signal CMOS technology. The injection locked oscillators have improved phase noise performance than free running oscillators. A differential Clapp-VCO has been designed and fabricated for the evaluation of hot electron reliability. The differential Clapp-VCO is formed using cross-coupled nMOS transistors, on-chip transformers/inductors, and voltage-controlled capacitors. The experimental data demonstrate that the hot carrier damage increases the oscillation frequency and degrades the phase noise of Clapp-VCO. A p-channel transistor only VCO has been designed for low phase noise. The simulation results show that the phase noise degrades after NBTI stress at elevated temperature. This is due to increased interface states after NBTI stress. The process variability has also been evaluated.

Download or read book Performance Optimization Techniques in Analog Mixed Signal and Radio Frequency Circuit Design written by Fakhfakh, Mourad and published by IGI Global. This book was released on 2014-10-31 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 an essential reference source for researchers, practitioners, engineers, and technology designers interested in emerging research and techniques in the performance optimization of different circuit designs.

Download or read book CMOS RF Circuit Design for Reliability and Variability written by Jiann-Shiun Yuan and published by Springer. This book was released on 2016-04-13 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this book is CMOS RF circuit design for reliability. The device reliability and process variation issues on RF transmitter and receiver circuits will be particular interest to the readers in the field of semiconductor devices and circuits. This proposed book is unique to explore typical reliability issues in the device and technology level and then to examine their impact on RF wireless transceiver circuit performance. Analytical equations, experimental data, device and circuit simulation results will be given for clear explanation. The main benefit the reader derive from this book will be clear understanding on how device reliability issues affects the RF circuit performance subjected to operation aging and process variations.

Download or read book Analog Circuit Design written by Herman Casier and published by Springer Science & Business Media. This book was released on 2008-03-19 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analog Circuit Design is based on the yearly Advances in Analog Circuit Design workshop. The aim of the workshop is to bring together designers of advanced analogue and RF circuits for the purpose of studying and discussing new possibilities and future developments in this field. Selected topics for AACD 2007 were: (1) Sensors, Actuators and Power Drivers for the Automotive and Industrial Environment; (2) Integrated PA's from Wireline to RF; (3) Very High Frequency Front Ends.

Download or read book Advanced Design Techniques for RF Power Amplifiers written by Anna N. Rudiakova and published by Springer Science & Business Media. This book was released on 2006-09-09 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Design Techniques for RF Power Amplifiers provides a deep analysis of theoretical aspects, modelling, and design strategies of RF high-efficiency power amplifiers. The book can be used as a guide by scientists and engineers dealing with the subject and as a text book for graduate and postgraduate students. Although primarily intended for skilled readers, it provides an excellent quick start for beginners.

Download or read book RF Power Amplifier and Oscillator Design for Reliability and Variability written by Shuyu Chen and published by . This book was released on 2013 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: CMOS RF circuit design has been an ever-lasting research field. It gained so much attention since RF circuits have high mobility and wide band efficiency, while CMOS technology has the advantage of low cost and better capability of integration. At the same time, IC circuits never stopped scaling down for the recent many decades. Reliability issues with RF circuits have become more and more severe with device scaling down: reliability effects such as gate oxide break down, hot carrier injection, negative bias temperature instability, have been amplified as the device size shrinks. Process variability issues also become more predominant as the feature size decreases. With these insights provided, reliability and variability evaluations on typical RF circuits and possible compensation techniques are highly desirable. In this work, a class E power amplifier is designed and laid out using TSMC 0.18 [micrometer] RF technology and the chip was fabricated. Oxide stress and hot electron tests were carried out at elevated supply voltage, fresh measurement results were compared with different stress conditions after 10 hours. Test results matched very well with mixed mode circuit simulations, proved that hot carrier effects degrades PA performances like output power, power efficiency, etc. Self- heating effects were examined on a class AB power amplifier since PA has high power operations. Device temperature simulation was done both in DC and mixed mode level. Different gate biasing techniques were analyzed and their abilities to compensate output power were compared. A simple gate biasing circuit turned out to be efficient to compensate self-heating effects under different localized heating situations. Process variation was studied on a classic Colpitts oscillator using Monte-Carlo simulation. Phase noise was examined since it is a key parameter in oscillator. Phase noise was modeled using analytical equations and supported by good match between MATLAB results and ADS simulation. An adaptive body biasing circuit was proposed to eliminate process variation. Results from probability density function simulation demonstrated its capability to relieve process variation on phase noise. Standard deviation of phase noise with adaptive body bias is much less than the one without compensation. Finally, a robust, adaptive design technique using PLL as on-chip sensor to reduce Process, Voltage, Temperature (P.V.T.) variations and other aging effects on RF PA was evaluated. The frequency and phase of ring oscillator need to be adjusted to follow the frequency and phase of input in PLL no matter how the working condition varies. As a result, the control signal of ring oscillator has to fluctuate according to the working condition, reflecting the P.V.T changes. RF circuits suffer from similar P.V.T. variations. The control signal of PLL is introduced to RF circuits and converted to the adaptive tuning voltage for substrate bias. Simulation results illustrate that the PA output power under different variations is more flat than the one with no compensation. Analytical equations show good support to what has been observed.

Download or read book RF Circuit Design written by Reinhold Ludwig and published by . This book was released on 2009 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aimed at senior undergraduate and first-year graduate Electrical Engineering courses in RF circuit design with an emphasis on analog integrated circuits, this text covers all important RF designs - with a focus on methodology fundamentals and discussion of theoretical concepts.

Download or read book RF Circuit Design written by Chris Bowick and published by Newnes. This book was released on 1997 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential reading for experts in the field of RF circuit design and engineers needing a good reference. This book provides complete design procedures for multiple-pole Butterworth, Chebyshev, and Bessel filters. It also covers capacitors, inductors, and other components with their behavior at RF frequencies discussed in detail. *Provides complete design procedures for multiple-pole Butterworth, Chebyshev, and Bessel filters *Covers capacitors, inductors, and other components with their behavior at RF frequencies discussed in detail

Download or read book Computational Intelligence in Analog and Mixed Signal AMS and Radio Frequency RF Circuit Design written by Mourad Fakhfakh and published by Springer. This book was released on 2015-07-14 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains the application of recent advances in computational intelligence – algorithms, design methodologies, and synthesis techniques – to the design of integrated circuits and systems. It highlights new biasing and sizing approaches and optimization techniques and their application to the design of high-performance digital, VLSI, radio-frequency, and mixed-signal circuits and systems. This first of two related volumes addresses the design of analog and mixed-signal (AMS) and radio-frequency (RF) circuits, with 17 chapters grouped into parts on analog and mixed-signal applications, and radio-frequency design. It will be of interest to practitioners and researchers in computer science and electronics engineering engaged with the design of electronic circuits.

Download or read book Cognitive Radio Receiver Front Ends written by Bodhisatwa Sadhu and published by Springer Science & Business Media. This book was released on 2013-10-11 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the architecture and circuit design for cognitive radio receiver front-ends. The authors first provide a holistic explanation of RF circuits for cognitive radio systems. This is followed by an in-depth exploration of existing techniques that can be utilized by circuit designers. Coverage also includes novel circuit techniques and architectures that can be invaluable for designers for cognitive radio systems.

Download or read book Design for Reliability Applied to RF MEMS Devices and Circuits Issued from Different TRL Environments written by Nuria Torres Matabosch and published by . This book was released on 2013 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is intended to deal with reliability of RF-MEMS devices (switches, in particular) from a designer point of view using different fabrication process approaches. This means that the focus will be on how to eliminate or alleviate at the design stage the effects of the most relevant failure mechanisms in each case rather than studying the underlying physics of failure. The detection of the different failure mechanisms are investigated using the RF performance of the device and the developed equivalent circuits. This novel approach allows the end-user to infer the evolution of the device performance versus time going one step further in the Design for Reliability in RF-MEMS. The division of the fabrication process has been done using the Technology Readiness Level of the process. It assesses the maturity of the technology prior to incorporating it into a system or subsystem. An analysis of the different R&D approaches will be presented by highlighting the differences between the different levels in the TRL classification. This thesis pretend to show how reliability can be improved regarding the approach of the fabrication process starting from a very flexible one (LAAS-CNRS as example of low-TRL) passing through a component approach (CEA-Leti as example of medium-TRL) and finishing with a standard co-integrated CMOS-MEMS process (IHP example of high TRL).

Download or read book Digitally Assisted Analog and RF CMOS Circuit Design for Software Defined Radio written by Kenichi Okada and published by Springer Science & Business Media. This book was released on 2011-08-26 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the state-of-the-art in RF, analog, and mixed-signal circuit design for Software Defined Radio (SDR). It synthesizes for analog/RF circuit designers the most important general design approaches to take advantage of the most recent CMOS technology, which can integrate millions of transistors, as well as several real examples from the most recent research results.

Download or read book Wireless Communication Electronics written by Robert Sobot and published by Springer Science & Business Media. This book was released on 2012-02-18 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for senior undergraduate and graduate students as well as practicing engineers who are involved in design and analysis of radio frequency (RF) circuits. Detailed tutorials are included on all major topics required to understand fundamental principles behind both the main sub-circuits required to design an RF transceiver and the whole communication system. Starting with review of fundamental principles in electromagnetic (EM) transmission and signal propagation, through detailed practical analysis of RF amplifier, mixer, modulator, demodulator, and oscillator circuit topologies, all the way to the system communication theory behind the RF transceiver operation, this book systematically covers all relevant aspects in a way that is suitable for a single semester university level course.

Download or read book Circuit Design for RF Transceivers written by Domine Leenaerts and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applicable for bookstore catalogue

Download or read book Nano scale CMOS Analog Circuits written by Soumya Pandit and published by CRC Press. This book was released on 2018-09-03 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reliability concerns and the limitations of process technology can sometimes restrict the innovation process involved in designing nano-scale analog circuits. The success of nano-scale analog circuit design requires repeat experimentation, correct analysis of the device physics, process technology, and adequate use of the knowledge database. Starting with the basics, Nano-Scale CMOS Analog Circuits: Models and CAD Techniques for High-Level Design introduces the essential fundamental concepts for designing analog circuits with optimal performances. This book explains the links between the physics and technology of scaled MOS transistors and the design and simulation of nano-scale analog circuits. It also explores the development of structured computer-aided design (CAD) techniques for architecture-level and circuit-level design of analog circuits. The book outlines the general trends of technology scaling with respect to device geometry, process parameters, and supply voltage. It describes models and optimization techniques, as well as the compact modeling of scaled MOS transistors for VLSI circuit simulation. • Includes two learning-based methods: the artificial neural network (ANN) and the least-squares support vector machine (LS-SVM) method • Provides case studies demonstrating the practical use of these two methods • Explores circuit sizing and specification translation tasks • Introduces the particle swarm optimization technique and provides examples of sizing analog circuits • Discusses the advanced effects of scaled MOS transistors like narrow width effects, and vertical and lateral channel engineering Nano-Scale CMOS Analog Circuits: Models and CAD Techniques for High-Level Design describes the models and CAD techniques, explores the physics of MOS transistors, and considers the design challenges involving statistical variations of process technology parameters and reliability constraints related to circuit design.

Download or read book Circuit and Interconnect Design for RF and High Bit rate Applications written by Hugo Veenstra and published by Springer Science & Business Media. This book was released on 2008-06-04 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Realizing maximum performance from high bit-rate and RF circuits requires close attention to IC technology, circuit-to-circuit interconnections (i.e., the ‘interconnect’) and circuit design. This detailed book covers each of these topics from theory to practice, with sufficient detail to help you produce circuits that are ‘first-time right’. Many practical circuit examples are included to demonstrate the interplay between technology, interconnect and circuit design.

Download or read book Digitally assisted Design Simulation and Testing Techniques for Optimization of Analog and RF Integrated Circuits written by Hari Chauhan and published by . This book was released on 2016 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-performance low-cost radio frequency (RF) transceivers are essential in today's wireless systems. Contemporary manufacturing process technologies and device scaling have helped the integration of analog and RF circuits with high performance, but often with high sensitivity to increasing process variations when chips are fabricated in high volumes. This trend has motivated designers to incorporate more digital circuits for performance optimizations of analog/RF circuits. A repercussion of adding on-chip circuits is the rise of design and verification complexity of RF devices, which is paral-leled by demands for shorter design cycles and better reliability. These challenges create the need for improved simulation and testing methodologies. This dissertation focuses on the design and integration of digital circuits with ana-log/RF circuits for performance optimizations. Spectral analysis for the evaluation of analog/RF circuits is a standard procedure for which the fast Fourier transform (FFT) algorithm is widely used. However, the majority of existing FFT implementations on chips consume excessive area and power for built-in testing applications. In this research, an FFT-based performance monitoring technique with multi-tone test signals has been created for efficient on-chip spectral analysis of analog/RF circuits. This method enables to estimate third-order intermodulation components of up to 50 dB below the fundamen-tal tones with an accuracy of ±1.5 dB based on the output spectrum of analog circuits. The capability of this technique to accurately determine the power of two test tones as well as their distortion components and intermodulation products was demonstrated by designing an on-chip linearity calibration scheme for a tunable low-noise amplifier. A key aspect of practical circuit and system design is to ensure high performance with high reliability and low cost. Therefore, it is advantageous to utilize test and simula-tion methods for simultaneous optimization of a design under test and a performance enhancement technique (e.g., self-calibration circuits and linearization methods) prior to fabrication of chips or systems. In this research, a simulation approach to concurrently design and optimize an entire system at a desired abstraction level was developed for integrated amplifiers. The design and optimization of a 10 W inverted Doherty power amplifier (PA) with a digital predistortion (DPD) linearization technique was completed to exemplify the effectiveness of the simulation platform. In addition, an integrated hardware-software co-design approach that allows DPD tuning to meet specification requirements with minimum resources was developed together with industrial collabora-tors. Tuning of the DPD technique was performed with several off-the-shelf power amplifiers for performance optimization of the integrated PA-DPD system. Furthermore, a tuning method was developed that incorporates a digital-to-analog converter in the integrated PA-DPD system. With this approach, the error signal generated by the digital predistortion technique can be utilized to automatically tune a bias voltage in the power amplifier for optimal performance. Simulation results from a closed-loop system consist-ing of an inverted Doherty power amplifier with digital predistortion were evaluated to validate the tuning mechanism.