Gallium Arsenide Digital Circuits

Gallium Arsenide Digital Circuits PDF

Author: Omar Wing

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 198

ISBN-13: 1461315417

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Gallium Arsenide technology has come of age. GaAs integrated circuits are available today as gate arrays with an operating speed in excess of one Gigabits per second. Special purpose GaAs circuits are used in optical fiber digital communications systems for the purpose of regeneration, multiplexing and switching of the optical signals. As advances in fabrication and packaging techniques are made, the operat ing speed will further increase and the cost of production will reach a point where large scale application of GaAs circuits will be economical in these and other systems where speed is paramount. This book is written for students and engineers who wish to enter into this new field of electronics for the first time and who wish to embark on a serious study of the subject of GaAs circuit design. No prior knowledge of GaAs technology is assumed though some previous experience with MOS circuit design will be helpful. A good part of the book is devoted to circuit analysis, to the extent that is possible for non linear circuits. The circuit model of the GaAs transistor is derived from first principles and analytic formulas useful in predicting the approxi mate circuit performance are also derived. Computer simulation is used throughout the book to show the expected performance and to study the effects of parameter variations.

Gallium Arsenide Digital Integrated Circuits

Gallium Arsenide Digital Integrated Circuits PDF

Author: Rory L. Van Tuyl

Publisher:

Published: 1974

Total Pages: 61

ISBN-13:

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This report describes the results of Phase I of the Gallium Arsenide Digital Integrated Circuits program, which was intended to demonstrate the feasibility of fabricating digital circuits with GaAs metal-semiconductor field-effect transistor (MESFET) technology. Dc, RF and switching parameters of the GaAs MESFET were characterized, a large-signal nonlinear device model developed and verified with the characterization data and a MESFET logic gate fabricated. The logic gate exhibited a propagation delay of 60 ps plus 15 ps per output load and a useful bandwidth of 3-4 GHz. Based on these experimental results, it is predicted that practical medium-scale logic systems with 2-3 GHz clock rates will be possible. Progress in the development of a MESFET process with self-aligned gate is reported. (Author).

GaAs Microelectronics

GaAs Microelectronics PDF

Author: Norman G. Einspruch

Publisher: Academic Press

Published: 2014-12-01

Total Pages: 472

ISBN-13: 1483217779

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VLSI Electronics Microstructure Science, Volume 11: GaAs Microelectronics presents the important aspects of GaAs (Gallium Arsenide) IC technology development ranging from materials preparation and IC fabrication to wafer evaluation and chip packaging. The volume is comprised of eleven chapters. Chapter 1 traces the historical development of GaAs technology for high-speed and high-frequency applications. This chapter summarizes the important properties of GaAs that serve to make this material and its related compounds technologically important. Chapter 2 covers GaAs substrate growth, ion implantation and annealing, and materials characterization, technologies that are essential for IC development. Chapters 3-6 describe the various IC technologies that are currently under development. These include microwave and digital MESFET ICs, the most mature technologies, and bipolar and field-effect heterostructure transistor ICs. The high-speed capability of GaAs ICs introduces new problems, on-wafer testing and packaging. These topics are discussed in Chapters 7 and 8. Applications for GaAs ICs are covered in Chapters 9 and 10. The first of these chapters is concerned with high speed computer applications; the second addresses military applications. The book concludes with a chapter on radiation effects in GaAs ICs. Scientists, engineers, researchers, device designers, and systems architects will find the book useful.

GaAs High-Speed Devices

GaAs High-Speed Devices PDF

Author: C. Y. Chang

Publisher: John Wiley & Sons

Published: 1994-10-28

Total Pages: 632

ISBN-13: 9780471856412

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The performance of high-speed semiconductor devices—the genius driving digital computers, advanced electronic systems for digital signal processing, telecommunication systems, and optoelectronics—is inextricably linked to the unique physical and electrical properties of gallium arsenide. Once viewed as a novel alternative to silicon, gallium arsenide has swiftly moved into the forefront of the leading high-tech industries as an irreplaceable material in component fabrication. GaAs High-Speed Devices provides a comprehensive, state-of-the-science look at the phenomenally expansive range of engineering devices gallium arsenide has made possible—as well as the fabrication methods, operating principles, device models, novel device designs, and the material properties and physics of GaAs that are so keenly integral to their success. In a clear five-part format, the book systematically examines each of these aspects of GaAs device technology, forming the first authoritative study to consider so many important aspects at once and in such detail. Beginning with chapter 2 of part one, the book discusses such basic subjects as gallium arsenide materials and crystal properties, electron energy band structures, hole and electron transport, crystal growth of GaAs from the melt and defect density analysis. Part two describes the fabrication process of gallium arsenide devices and integrated circuits, shedding light, in chapter 3, on epitaxial growth processes, molecular beam epitaxy, and metal organic chemical vapor deposition techniques. Chapter 4 provides an introduction to wafer cleaning techniques and environment control, wet etching methods and chemicals, and dry etching systems, including reactive ion etching, focused ion beam, and laser assisted methods. Chapter 5 provides a clear overview of photolithography and nonoptical lithography techniques that include electron beam, x-ray, and ion beam lithography systems. The advances in fabrication techniques described in previous chapters necessitate an examination of low-dimension device physics, which is carried on in detail in chapter 6 of part three. Part four includes a discussion of innovative device design and operating principles which deepens and elaborates the ideas introduced in chapter 1. Key areas such as metal-semiconductor contact systems, Schottky Barrier and ohmic contact formation and reliability studies are examined in chapter 7. A detailed discussion of metal semiconductor field-effect transistors, the fabrication technology, and models and parameter extraction for device analyses occurs in chapter 8. The fifth part of the book progresses to an up-to-date discussion of heterostructure field-effect (HEMT in chapter 9), potential-effect (HBT in chapter 10), and quantum-effect devices (chapters 11 and 12), all of which are certain to have a major impact on high-speed integrated circuits and optoelectronic integrated circuit (OEIC) applications. Every facet of GaAs device technology is placed firmly in a historical context, allowing readers to see instantly the significant developmental changes that have shaped it. Featuring a look at devices still under development and device structures not yet found in the literature, GaAs High-Speed Devices also provides a valuable glimpse into the newest innovations at the center of the latest GaAs technology. An essential text for electrical engineers, materials scientists, physicists, and students, GaAs High-Speed Devices offers the first comprehensive and up-to-date look at these formidable 21st century tools. The unique physical and electrical properties of gallium arsenide has revolutionized the hardware essential to digital computers, advanced electronic systems for digital signal processing, telecommunication systems, and optoelectronics. GaAs High-Speed Devices provides the first fully comprehensive look at the enormous range of engineering devices gallium arsenide has made possible as well as the backbone of the technology—ication methods, operating principles, and the materials properties and physics of GaAs—device models and novel device designs. Featuring a clear, six-part format, the book covers: GaAs materials and crystal properties Fabrication processes of GaAs devices and integrated circuits Electron beam, x-ray, and ion beam lithography systems Metal-semiconductor contact systems Heterostructure field-effect, potential-effect, and quantum-effect devices GaAs Microwave Monolithic Integrated Circuits and Digital Integrated Circuits In addition, this comprehensive volume places every facet of the technology in an historical context and gives readers an unusual glimpse at devices still under development and device structures not yet found in the literature.

Gallium Arsenide IC Applications Handbook

Gallium Arsenide IC Applications Handbook PDF

Author:

Publisher: Elsevier

Published: 1995-09-27

Total Pages: 385

ISBN-13: 0080532292

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Gallium Arsenide IC Applications Handbook is the first text to offer a comprehensive treatment of Gallium Arsenide (GaAs) integrated chip (IC) applications, specifically in microwave systems. The books coverage of GaAs in microwave monolithic ICs demonstrates why GaAs is being hailed as a material of the future for the various advantages it holds over silicon. This volume provides scientists, physicists, electrical engineers, and technology professionals and managers working on microwave technology with practical information on GaAs applications in radar, electronic warfare, communications, consumer electronics, automotive electronics and traffic control. Includes an executive summary in each volume and chapter Facilitates comprehension with its tutorial writing style Covers key technical issues Emphasizes practical aspects of the technology Contains minimal mathematics Provides a complete reference list