Author: Earl McCune Publisher: Cambridge University Press ISBN: 1107059178 Category : Technology & Engineering Languages : en Pages : 495
Book Description
"Power is dissipated (lost) when this current flows through any resistance, which includes the amplifier's transistor. This dissipated power is the product of the current in the load times the voltage difference between the supply voltage to the amplifier and the output signal voltage. When the voltage supplied to the amplifier is a constant value, and by far the most common design practice, the situation in Fig. 1-2a results. Power dissipation in the amplifier is maximum when the output signal voltage is 1/2 of the supply voltage. When the output signal voltage is higher, even though the current value is larger the voltage drop is less and the power dissipation is lower. Similarly, when the output signal voltage is small, even though the voltage drop is now large the current in the load is smaller and again the power dissipation is lower"--
Author: Matteo Meneghini Publisher: Springer ISBN: 3319431994 Category : Technology & Engineering Languages : en Pages : 383
Book Description
This book presents the first comprehensive overview of the properties and fabrication methods of GaN-based power transistors, with contributions from the most active research groups in the field. It describes how gallium nitride has emerged as an excellent material for the fabrication of power transistors; thanks to the high energy gap, high breakdown field, and saturation velocity of GaN, these devices can reach breakdown voltages beyond the kV range, and very high switching frequencies, thus being suitable for application in power conversion systems. Based on GaN, switching-mode power converters with efficiency in excess of 99 % have been already demonstrated, thus clearing the way for massive adoption of GaN transistors in the power conversion market. This is expected to have important advantages at both the environmental and economic level, since power conversion losses account for 10 % of global electricity consumption. The first part of the book describes the properties and advantages of gallium nitride compared to conventional semiconductor materials. The second part of the book describes the techniques used for device fabrication, and the methods for GaN-on-Silicon mass production. Specific attention is paid to the three most advanced device structures: lateral transistors, vertical power devices, and nanowire-based HEMTs. Other relevant topics covered by the book are the strategies for normally-off operation, and the problems related to device reliability. The last chapter reviews the switching characteristics of GaN HEMTs based on a systems level approach. This book is a unique reference for people working in the materials, device and power electronics fields; it provides interdisciplinary information on material growth, device fabrication, reliability issues and circuit-level switching investigation.
Author: Steve C. Cripps Publisher: Artech House Publishers ISBN: 9781596930186 Category : Technology & Engineering Languages : en Pages : 456
Book Description
This extensively revised edition offers a comprehensive, practical, up-to-date understanding of how to tackle a power amplifier design with confidence and quickly determine the cause of malfunctioning hardware.
Author: Dante Del Corso Publisher: Artech House ISBN: 1630817376 Category : Technology & Engineering Languages : en Pages : 307
Book Description
This practical, hands-on resource describes functional units and circuits of telecommunication systems. The functions characterizing these systems, including RF amplifiers (both low noise and power amplifiers), signal sources, mixers and phase lock loops, are explored from an operational level viewpoint. And as all functions are migrating to digital implementations, this book describes functional units and circuits of telecommunication systems (with radio, wire, or optical links), from functional level viewpoint to the circuit details and examples. The structure of a radio transceiver is described and a view of all functional units, including migration to SDR (Software Defined Radio) is provided. Chapters include a functional identification of the units described and analysis of possible circuit solutions and analysis of error sources. The sequence reflects the actual design procedure: functional identification, search and analysis of solutions, and critical review to provide an understanding of the various solutions and tradeoffs, with guidelines for design and/or selection of proper functional units.
Author: IEEE Staff Publisher: ISBN: 9781538617960 Category : Languages : en Pages :
Book Description
Computer Engineering, Electronics, Information Sciences and Mechanical Engineering are the essential disciplines in Mechatronics and Robotics leading to powerful, compact and ever smarter systems Their evolution relies on progress in all these complementary scientific and technological fields This workshop provides an international forum for the exchange of ideas, discussions on research results and the presentation of theoretical and practical applications in these domains This workshop is a meeting plateform between the complementary technical and scientific fields required in mechatronic and robotic systems It brings together the actors in integrated circuits , computer sciences , signal processing and mechatronic systems in order to get to know the recent development in each domain
Author: Mike Golio Publisher: CRC Press ISBN: 1420036769 Category : Technology & Engineering Languages : en Pages : 1377
Book Description
The recent shift in focus from defense and government work to commercial wireless efforts has caused the job of the typical microwave engineer to change dramatically. The modern microwave and RF engineer is expected to know customer expectations, market trends, manufacturing technologies, and factory models to a degree that is unprecedented in the
Author: Cynthia M. Furse Publisher: IOP ebooks ISBN: 9780750323987 Category : Languages : en Pages : 0
Book Description
This book, aimed at researchers, practitioners and advanced students will bring the concepts of time and frequency domain reflectometry together, helping the reader develop a detailed understanding not only of each method, but of the relationships between them, and how they can each be used to their best advantage.
Author: Andrei Grebennikov Publisher: McGraw Hill Professional ISBN: 0071782990 Category : Technology & Engineering Languages : en Pages : 433
Book Description
This is a rigorous tutorial on radio frequency and microwave power amplifier design, teaching the circuit design techniques that form the microelectronic backbones of modern wireless communications systems. Suitable for self-study, corporate training, or Senior/Graduate classroom use, the book combines analytical calculations and computer-aided design techniques to arm electronic engineers with every possible method to improve their designs and shorten their design time cycles.
Author: Earl McCune
Author: Matteo Meneghini
Author: José Carlos Pedro
Author: Steve C. Cripps
Author: Dante Del Corso
Author: IEEE Staff
Author: Mike Golio
Author: Cynthia M. Furse
Author: Andrei Grebennikov