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Study On Wideband Voltage Controlled Oscillator And High Efficiency Power Amplifier Ics For Wireless Communications
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Book Synopsis Study on Wideband Voltage Controlled Oscillator and High Efficiency Power Amplifier ICs for Wireless Communications by : Qing Liu
Download or read book Study on Wideband Voltage Controlled Oscillator and High Efficiency Power Amplifier ICs for Wireless Communications written by Qing Liu and published by . This book was released on 2012 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Analog and RF IC Design for Wireless Communication Systems by : Mustafa Acar
Download or read book Advances in Analog and RF IC Design for Wireless Communication Systems written by Mustafa Acar and published by Elsevier Inc. Chapters. This book was released on 2013-05-13 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter presents high-efficiency power amplifiers (PAs) for wireless infrastructure. It starts by stating the importance of high efficiency and the historical evolution in base station PA concepts. It then introduces the current solution, the Doherty PA. After explaining the fundamentals of the Doherty PA, a novel implementation achieving more than 35% drain efficiency across a 6dB power back-off range and up to 20W peak power between 1.7 and 2.3GHz is given. Afterwards, a future PA concept, switch-mode outphasing PA, is introduced. Theory and implementation details of a class-E outphasing PA achieving more than 60% drain efficiency across a 6dB power back-off range and up to 19W peak power between 1800 and 2050MHz is explained. By the end of the chapter, an essential part of switch-mode PAs, high voltage (up to 10V) and high frequency (up to 4GHz) drivers are presented.
Book Synopsis Power Amplifier Design for High Spectrum-Efficiency Wireless Communications by : Steve Hung-Lung Tu
Download or read book Power Amplifier Design for High Spectrum-Efficiency Wireless Communications written by Steve Hung-Lung Tu and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Analog and RF IC Design for Wireless Communication Systems by : Gabriele Manganaro
Download or read book Advances in Analog and RF IC Design for Wireless Communication Systems written by Gabriele Manganaro and published by Academic Press. This book was released on 2013-05-13 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 single-chip radios. This book offers a quick grasp of emerging research topics in RF integrated circuit design and their potential applications, with brief introductions to key topics followed by references to specialist papers for further reading. All of the chapters, compiled by editors well known in their field, have been authored by renowned experts in the subject. Each includes a complete introduction, followed by the relevant most significant and recent results on the topic at hand. This book gives researchers in industry and universities a quick grasp of the most important developments in analog and RF integrated circuit design. Emerging research topics in RF IC design and its potential application Case studies and practical implementation examples Covers fundamental building blocks of a cellular base station system and satellite infrastructure Insights from the experts on the design and the technology trade-offs, the challenges and open questions they often face References to specialist papers for further reading
Book Synopsis Bandwidth and Efficiency Enhancement in Radio Frequency Power Amplifiers for Wireless Transmitters by : Karun Rawat
Download or read book Bandwidth and Efficiency Enhancement in Radio Frequency Power Amplifiers for Wireless Transmitters written by Karun Rawat and published by Springer Nature. This book was released on 2020-03-05 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on broadband power amplifier design for wireless communication. Nonlinear model embedding is described as a powerful tool for designing broadband continuous Class-J and continuous class F power amplifiers. The authors also discuss various techniques for extending bandwidth of load modulation based power amplifiers, such as Doherty power amplifier and Chireix outphasing amplifiers. The book also covers recent trends on digital as well as analog techniques to enhance bandwidth and linearity in wireless transmitters. Presents latest trends in designing broadband power amplifiers; Covers latest techniques for using nonlinear model embedding in designing power amplifiers based on waveform engineering; Describes the latest techniques for extending bandwidth of load modulation based power amplifiers such as Doherty power amplifier and Chireix outphasing amplifiers; Includes coverage of hybrid analog/digital predistortion as wideband solution for wireless transmitters; Discusses recent trends on on-chip power amplifier design with GaN /GaAs MMICs for high frequency applications.
Book Synopsis Integrated Circuits for Wireless Communications by : Asad A. Abidi
Download or read book Integrated Circuits for Wireless Communications written by Asad A. Abidi and published by Wiley-IEEE Press. This book was released on 1999 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrical Engineering Integrated Circuits for Wireless Communications High-frequency integrated circuit design is a booming area of growth that is driven not only by the expanding capabilities of underlying circuit technologies like CMOS, but also by the dramatic increase in wireless communications products that depend on them. Integrated Circuits for Wireless Communications includes seminal and classic papers in the field and is the first all-in-one resource to address this increasingly important topic. Internationally known and highly regarded in the field, editors Asad Abidi, Paul Gray, and Robert G. Meyer have meticulously compiled more than 100 papers and articles covering the very latest high-level integrated circuits techniques and solutions in use today. Integrated Circuits for Wireless Communications is devised expressly to provide IC design engineers, system architects, and integrators with a practical understanding of subjects ranging from architecture choices for integrated transceivers to actual circuit designs in all viable IC technologies, such as bipolar, CMOS, and GaAs. The papers selected represent a breadth of coverage and level of expertise that is simply unmatched in the field. Topics covered include: Radio architectures Receivers Transmitters and transceivers Power amplifiers and RF switches Oscillators Passive components Systems applications
Book Synopsis High Efficiency Wideband Envelope Tracking Power Amplifier for Next-generation Wireless Communications by : Myoungbo Kwak
Download or read book High Efficiency Wideband Envelope Tracking Power Amplifier for Next-generation Wireless Communications written by Myoungbo Kwak and published by . This book was released on 2011 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest generation of smart devices deployed in cellular networks has created explosive growth in network data traffic, and the increasing demand for broadband services with higher data rates, require higher peak to average power ratio (PAPR) with wider bandwidth. One of the challenges in the conventional power amplifiers (PAs) with fixed supply voltage, is the degraded efficiency and generated heats at a large back-off to meet tight linearity requirements. This dissertation presents high efficiency wideband envelope tracking power amplifiers for 2.1 GHz micro base-stations and 2.5 GHz wireless mobile applications. By superimposing the envelope signal at the drain such that the RF amplifier operates consistently closer to saturation, the overall efficiency is improved and the generated heat is reduced dramatically. In the first part of the dissertation, a high performance BiCMOS DMOS monolithic envelope amplifier for micro-base station power amplifiers is presented. Due to the low breakdown voltage of the CMOS transistors, the high voltage envelope amplifier has been implemented with discrete components with high voltage process. Compared to these discrete solutions, an integrated circuits implementation for the envelope amplifier brings many benefits. The design of monolithic envelope amplifiers for high voltage (VDD = 15 V) envelope tracking applications, and the design techniques to solve the reliability issues with thin gate oxide is described. The overall envelope tracking system employing a GaN-HEMT RF transistor, and fully integrated high voltage envelope amplifier with a 0.35[mu]m BiCMOS DMOS process, is demonstrated. In the second part, a high-efficiency wideband envelope tracking power amplifier for mobile LTE applications will be presented. The CMOS envelope amplifier with hybrid linear and switcher is designed in a 150 nm CMOS process. The envelope amplifier employs direct sensing of the linear stage current to reduce the propagation delay in the switcher. The strategy is demonstrated to improve the efficiency of the complete envelope tracking power amplifier system. The resulting performance of envelope tracking system employing a GaAs HBT-based RF PA with a 5 MHz LTE signal input demonstrated state-of-the-art efficiency while meet the linearity requirement.
Book Synopsis Design Techniques for High Frequency PAs and VCOs by : Farid Shirinfar
Download or read book Design Techniques for High Frequency PAs and VCOs written by Farid Shirinfar and published by . This book was released on 2016 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's content-centric mobile world demands Gigabit-per-second (Gbps) wireless communication systems. With sub-10GHz radio frequencies cluttered with existing wireless infrastructures such as 2.4GHz and 5GHz Wi-Fi and a multitude of LTE bands in the 1-2GHz range, focus has shifted to microwaves and mm-waves. The inverse relation between frequency and wavelength (and thus antenna size) differentiates mm-wave solutions in terms of size. For example, a 16-element antenna array only takes about 1.5cm2 at 60GHz. The pitfall, however, is the degraded active device performance at these high frequencies. Innovations at circuit-level and architecture-level are thus necessary. The dominant non-idealities that limit the performance of such radios in CMOS are the phase noise of the voltage controlled oscillator (VCO), the maximum output power of power amplifier (PA) limited by device breakdown voltage, and the non-linear behavior of the PA. Circuit and architecture level innovations presented in this research improve state-of-the-art performance in those areas. To address the phase noise limitation, a mm-wave VCO architecture with low phase noise and large tuning range is presented. MM-wave systems rely on large channel bandwidths (e.g. 1.7GHz per channel, 7GHz total) to achieve high data rates. Channel selection using varactors and/or switched-capacitors suffers from poor phase noise performance due to the low quality factor of those elements at mm-waves. In the proposed architecture, the required frequency tuning range is divided amongst four narrow-band clusters of VCOs. Each cluster of VCOs can achieve lower phase noise due to the reduced frequency tuning range requirement. Phase noise of each cluster is further improved by using multiple cores of VCOs connected in parallel with differential transmission lines. The VCO achieves a phase noise of -101.8 dBc/Hz at 1 MHz offset with an FOM of -182dB/Hz and over 12.6% frequency tuning range (50.7 GHz to 57.5 GHz). Another focus of this research is to improve the power amplifier (PA) performance (output power, linearity, and efficiency). Innovations in power combining techniques enable us to achieve the highest reported saturated power level of 22.6dBm in CMOS at 60GHz. Stacking transistors as a second remedy to improve the output power of the PA is considered and trade-offs in gain, reliability, and output power are treated analytically and an optimal stacking strategy for mm-wave PAs is presented. A simulation-based comparison shows the superiority of the proposed optimal stacking approach compared with the conventional stacking approach for a 60GHz SiGe PA. A wideband self-contained PA linearization technique is presented to address mm-wave PA linearity challenges. The proposed Adaptive Gain and Phase Adjustment (AGPA) linearization technique compensates for both AM-AM and AM-PM distortion of the PA for large channel bandwidths of hundreds of megahertz at mm-waves. The gain and phase linearization loop consists of an envelope detector, an Analog Mapping Core (AMC), and a variable RC feedback network. The detection and adjustment loop has a low group delay and thus enables one of the largest linearization bandwidths published. AGPA improves the OP1dB of a stacked mm-wave PA by 2.8dB (from 9.5dBm to 12.3dBm) and reduces the IM3 products by 3dB at 8dBm output power with a tone spacing of 200MHz. Power Added Efficiency (PAE) at OP1dB is improved from 6.5% to 10.5% by enabling AGPA at 57GHz.
Book Synopsis High Efficiency and High Linearity Power Amplifiers for 5G Wireless Communications by : Duy Phuong Nguyen
Download or read book High Efficiency and High Linearity Power Amplifiers for 5G Wireless Communications written by Duy Phuong Nguyen and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With the increasing demand for higher data rates and the crowding of the cellular bands below 3 GHz, researchers are looking to the millimeter-wave frequency spectrum to define the next generation of mobile broadband communications. One of the biggest challenges in implementing a millimeter-wave solution is the low efficiency of commercially available millimeter-wave power amplifiers. Furthermore, the monolithic millimeter-wave integrated circuit (MMIC) power amplifiers also need to have high power with reasonable gain, good linearity and maintain a compact chip size. In Chapter 1 and Chapter 2 of this dissertation, a compact high efficiency Ka-band power amplifier and a highly linear amplifier using second harmonic injection will be demonstrated. The requirements are even more stringent when the amplifiers are deployed in wireless systems that have high peak to average power ratio (PAPR). Among the most popular solutions to achieve high efficiency at power back-off is the Doherty architecture. Thus far, Doherty power amplifiers have been primarily implemented in the spectrum below 3 GHz for cellular base stations. Very few millimeter-wave Doherty PA’s have been reported to date. The conventional Doherty architecture has several inherent drawbacks that cause low efficiency, occupy large chip size and limit the performance bandwidth. Therefore, in our work, we propose four different Doherty amplifier topologies improve the DPA performance: 1) An ultra-compact Doherty amplifier using 3-dimensional broadside coupler 2) A wideband reconfigurable Doherty amplifier 3) A high power density stacked-FET Doherty power amplifier with asymmetrical gate bias 4) A high efficiency asymmetrical Doherty power amplifier using novel load modulation scheme based on load-pull data. All the proposed DPAs are fabricated in a 0.15-[mu]m enhancement mode (E-mode) Gallium Arsenide (GaAs) process. The proposed techniques and experimental results will be discussed in Chapter 3, 4, 5 and 6.The content of this dissertation is a compilation of 18 manuscripts, all of which I am the author or co-author. The titles, publishers and publication dates of the manuscripts are listed on page xii and xiii in this dissertation.
Book Synopsis 2021 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) by : IEEE Staff
Download or read book 2021 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) written by IEEE Staff and published by . This book was released on 2021-06-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: RFIC is the premier IC Conference focused on the latest developments in RF Microwave, and Millimeter Wave Integrated Circuit Technology and Innovation
Book Synopsis Distributed Power Amplifiers for RF and Microwave Communications by : Narendra Kumar
Download or read book Distributed Power Amplifiers for RF and Microwave Communications written by Narendra Kumar and published by Artech House. This book was released on 2015-06-01 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new resource presents readers with all relevant information and comprehensive design methodology of wideband amplifiers. This book specifically focuses on distributed amplifiers and their main components, and presents numerous RF and microwave applications including well-known historical and recent architectures, theoretical approaches, circuit simulation, and practical implementation techniques. A great resource for practicing designers and engineers, this book contains numerous well-known and novel practical circuits, architectures, and theoretical approaches with detailed description of their operational principles.
Book Synopsis Electrical & Electronics Abstracts by :
Download or read book Electrical & Electronics Abstracts written by and published by . This book was released on 1997 with total page 2304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Op Amps for Everyone by : Ron Mancini
Download or read book Op Amps for Everyone written by Ron Mancini and published by Newnes. This book was released on 2003 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: The operational amplifier ("op amp") is the most versatile and widely used type of analog IC, used in audio and voltage amplifiers, signal conditioners, signal converters, oscillators, and analog computing systems. Almost every electronic device uses at least one op amp. This book is Texas Instruments' complete professional-level tutorial and reference to operational amplifier theory and applications. Among the topics covered are basic op amp physics (including reviews of current and voltage division, Thevenin's theorem, and transistor models), idealized op amp operation and configuration, feedback theory and methods, single and dual supply operation, understanding op amp parameters, minimizing noise in op amp circuits, and practical applications such as instrumentation amplifiers, signal conditioning, oscillators, active filters, load and level conversions, and analog computing. There is also extensive coverage of circuit construction techniques, including circuit board design, grounding, input and output isolation, using decoupling capacitors, and frequency characteristics of passive components. The material in this book is applicable to all op amp ICs from all manufacturers, not just TI. Unlike textbook treatments of op amp theory that tend to focus on idealized op amp models and configuration, this title uses idealized models only when necessary to explain op amp theory. The bulk of this book is on real-world op amps and their applications; considerations such as thermal effects, circuit noise, circuit buffering, selection of appropriate op amps for a given application, and unexpected effects in passive components are all discussed in detail. *Published in conjunction with Texas Instruments *A single volume, professional-level guide to op amp theory and applications *Covers circuit board layout techniques for manufacturing op amp circuits.
Book Synopsis Index to IEEE Publications by : Institute of Electrical and Electronics Engineers
Download or read book Index to IEEE Publications written by Institute of Electrical and Electronics Engineers and published by . This book was released on 1990 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1973- cover the entire IEEE technical literature.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1967 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Science Abstracts written by and published by . This book was released on 1995 with total page 1360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microwave Journal written by and published by . This book was released on 2007 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
